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Table 428. SELECTING AREA REDUCTION OF TOOL STEELS

 

 

Area Reduction

Type

Condition

(%)

 

 

 

 

 

 

L6

Oil quenched from 845 •C and single tempered at 315 •C

9

S1

Oil quenched from 930 •C and single tempered at 315 •C

12

L2

Oil quenched from 855 •C and single tempered at 205 •C

15

S1

Oil quenched from 930 •C and single tempered at 425 •C

17

L6

Oil quenched from 845 •C and single tempered at 425 •C

20

S5

Oil quenched from 870 •C and single tempered at 205 •C

20

S7

Fan cooled from 940 •C and single tempered at 205 •C

20

S1

Oil quenched from 930 •C and single tempered at 540 •C

23

S5

Oil quenched from 870 •C and single tempered at 315 •C

24

S7

Fan cooled from 940 •C and single tempered at 315 •C

25

S5

Oil quenched from 870 •C and single tempered at 425 •C

28

S7

Fan cooled from 940 •C and single tempered at 425 •C

29

L2

Oil quenched from 855 •C and single tempered at 315 •C

30

L6

Oil quenched from 845 •C and single tempered at 540 •C

30

S5

Oil quenched from 870 •C and single tempered at 540 •C

30

S7

Fan cooled from 940 •C and single tempered at 540 •C

33

L2

Oil quenched from 855 •C and single tempered at 425 •C

35

S1

Oil quenched from 930 •C and single tempered at 650 •C

37

S5

Oil quenched from 870 •C and single tempered at 650 •C

40

L2

Oil quenched from 855 •C and single tempered at 540 •C

45

S7

Fan cooled from 940 •C and single tempered at 650 •C

45

L6

Oil quenched from 845 •C and single tempered at 650 •C

48

L2

Annealed

50

S5

Annealed

50

S1

Annealed

52

L2

Oil quenched from 855 •C and single tempered at 650 •C

55

L6

Annealed

55

S7

Annealed

55

 

 

 

Area Reduction in 50 mm or 2 in.

Source: data from ASM Metals Reference Book, Second Edition, American Society for Metals, Metals Park, Ohio 44073, p241, (1984).

©2001 CRC Press LLC

Shackelford, James F. & Alexander, W. “Selecting Electrical Properties”

Materials Science and Engineering Handbook

Ed. James F. Shackelford & W. Alexander Boca Raton: CRC Press LLC, 2001

CHAPTER 14 Selecting Electrical

Properties

List of Tables

Resistivity

 

Selecting Electrical Resistivity of Alloy Cast Irons

 

Selecting Resistivity of Ceramics

 

Selecting Volume Resistivity of Glass

 

Selecting Volume Resistivity of Polymers

Critical Temperature

Selecting Critical Temperature of

Superconductive Elements

Dissipation Factor

Selecting Dissipation Factor for Polymers at 60 Hz

Selecting Dissipation Factor for Polymers at 1 MHz

Dielectric

Selecting Dielectric Strength of Polymers

Selecting Dielectric Constants of Polymers at 60 Hz

Selecting Dielectric Constants of Polymers at 1 MHz

Tangent Loss

Selecting Tangent Loss in Glass

Selecting Tangent Loss in Glass by Temperature

Selecting Tangent Loss in Glass by Frequency

(continued)

©2001 CRC Press LLC

List of Tables

Permittivity

(Continued)

Selecting Electrical Permittivity of Glass

 

 

Selecting Electrical Permittivity of Glass by Frequency

Arc Resistance

Selecting Arc Resistance of Polymers

©2001 CRC Press LLC

Table 429. SELECTING ELECTRICAL RESISTIVITY OF

ALLOY CAST IRONS

 

Electrical Resistivity

Description

(μΩ • m)

 

 

 

 

Corrosion–Resistant High– Silicon iron

0.50

Abrasion–Resistant Low–C White Iron

0.53

Heat–Resistant Medium–silicon Ductile Iron

0.58 to

0.87

Abrasion–Resistant Martensitic nickel–chromium White Iron

0.80

Corrosion–Resistant High–nickel gray iron

1.0a

Corrosion–Resistant High–nickel ductile iron

1.0a

Heat–Resistant High–nickel Ductile Iron (23 Ni)

1.0a

Heat–Resistant High–nickel Ductile Iron (20 Ni)

1.02

Heat–Resistant Gray High–nickel Iron

1.4 to

1.7

Heat–Resistant Nickel–chromium–silicon Gray Iron

1.5 to

1.7

Heat–Resistant High–aluminum Gray Iron

2.4

 

 

 

 

a Estimated.

Source: data from ASM Metals Reference Book, Second Edition, American Society for Metals, Metals Park, Ohio 44073, (1984).

©2001 CRC Press LLC

Table 430. SELECTING RESISTIVITY OF CERAMICS

(SHEET 1 OF 5)

 

Temperature

Resistivity

 

Range of

Ceramic

Validity

(Ω–cm)

 

 

 

 

 

 

Boron Carbide (B4C)

 

0.3–0.8

Titanium Monocarbide (TiC)

 

0.3–0.8

Zircoium Oxide (ZrO2) (stabilized)

2200˚C

0.37

Zircoium Oxide (ZrO2) (stabilized)

2000˚C

0.59

Silicon Carbide (SiC) (with 1 wt% Al additive)

 

0.8

Zircoium Oxide (ZrO2) (stabilized)

1700˚C

1.6

Zircoium Oxide (ZrO2) (stabilized)

1300˚C

9.4

Zircoium Oxide (ZrO2) (stabilized)

1200˚C

77

Silicon Carbide (SiC)

20˚C

102 –1012

Magnesium Oxide (MgO)

1727˚C

4x102

Zircoium Oxide (ZrO2) (stabilized)

700˚C

2300

Cordierite (2MgO 2Al2O3 5SiO2) (ρ=2.3g/cm3)

900˚C

1.9x104

Silicon Carbide (SiC) (with 1 wt% B additive)

 

2x104

Boron Nitride (BN)

1000˚C

3.1x104

Cordierite (2MgO 2Al2O3 5SiO2) (ρ=2.3g/cm3)

700˚C

8.0x104

Cordierite (2MgO 2Al2O3 5SiO2) (ρ=2.1g/cm3)

900˚C

3.5x105

Cordierite (2MgO 2Al2O3 5SiO2) (ρ=1.8g/cm3)

900˚C

7.0x105

Cordierite (2MgO 2Al2O3 5SiO2) (ρ=2.3g/cm3)

500˚C

7.7x105

Zirconium Diboride (ZrB2)

liquid air temperature

1.8x106

Aluminum Oxide (Al2O3)

1000˚C

2x106

 

 

 

Source: data compiled by J.S. Park from No. 1 Materials Index, Peter T.B. Shaffer, Plenum Press, New York, (1964); Smithells Metals Reference Book, Eric A. Brandes, ed., in association with Fulmer Research Institute Ltd. 6th ed. London, Butterworths, Boston, (1983); and Ceramic Source, American Ceramic Society (1986–1991).

©2001 CRC Press LLC

Table 430. SELECTING RESISTIVITY OF CERAMICS

(SHEET 2 OF 5)

 

Temperature

Resistivity

 

Range of

Ceramic

Validity

(Ω–cm)

 

 

 

 

 

 

Cordierite (2MgO 2Al2O3 5SiO2) (ρ=2.1g/cm3)

700˚C

3.0x106

Titanium Diboride (TiB2) (polycrystalline)

liquid air temp.

3.7x106

(100% dense, extrapolated)

 

 

Zirconium Mononitirde (TiN)

liquid air

3.97x106

Cordierite (2MgO 2Al2O3 5SiO2) (ρ=1.8g/cm3)

700˚C

4.7x106

Titanium Diboride (TiB2) (monocrystalline)

 

 

(crystal length 5 cm, 39 deg. and 59 deg.

 

 

orientation with respect to growth axis)

room temp.

6.6±0.2x106

Titanium Diboride (TiB2) (monocrystalline)

 

 

(crystal length 1.5 cm, 16.5 deg. and 90 deg.

 

 

orientation with respect to growth axis)

room temp.

6.7±0.2x106

Tantalum Monocarbide (TaC) (80% dense)

4.2K

8x106

Titanium Mononitirde (TiN)

liquid air

8.13x106

Titanium Diboride (TiB2) (polycrystalline)

 

 

(100% dense, extrapolated)

room temp.

8.7–14.1x106

Titanium Diboride (TiB2)

 

 

(polycrystalline) (85% dense)

room temp.

9.0x106

Zirconium Diboride (ZrB2)

20 ˚C

9.2x106

Tantalum Monocarbide (TaC) (80% dense)

80K

10x106

Hafnium Diboride (HfB2)

room temp.

10–12 x 106

Titanium Mononitirde (TiN)

room temp.

11.07–130x106

Zirconium Mononitirde (TiN)

room temp.

11.52–160x106

Tantalum Monocarbide (TaC) (80% dense)

160K

15x106

 

 

 

Source: data compiled by J.S. Park from No. 1 Materials Index, Peter T.B. Shaffer, Plenum Press, New York, (1964); Smithells Metals Reference Book, Eric A. Brandes, ed., in association with Fulmer Research Institute Ltd. 6th ed. London, Butterworths, Boston, (1983); and Ceramic Source, American Ceramic Society (1986–1991).

©2001 CRC Press LLC

Table 430. SELECTING RESISTIVITY OF CERAMICS

(SHEET 3 OF 5)

 

Temperature

Resistivity

 

Range of

Ceramic

Validity

(Ω–cm)

 

 

 

 

 

 

Molybdenum Disilicide (MoSi2)

–80˚C

18.9x106

Magnesium Oxide (MgO)

1000˚C

0.2–1x108

Tantalum Monocarbide (TaC) (80% dense)

240K

20x106

Chromium Diboride (CrB2)

 

21x106

Molybdenum Disilicide (MoSi2)

22˚C

21.5x106

Tantalum Monocarbide (TaC) (80% dense)

300K

25x106

Titanium Diboride (TiB2)

 

 

(polycrystalline) (85% dense)

room temp.

26.5–28.4x106

Cordierite (2MgO 2Al2O3 5SiO2) (ρ=2.3g/cm3)

300˚C

3.3x107

Tungsten Disilicide (WSi2)

 

33.4–54.9x106

Hafnium Monocarbide (HfC)

4.2K

41x106

Hafnium Monocarbide (HfC)

80K

41x106

Zirconium Monocarbide (ZrC)

4.2K

41x106

Hafnium Monocarbide (HfC)

160K

45x106

Zirconium Monocarbide (ZrC)

80K

45x106

Zirconium Monocarbide (ZrC)

160K

47x106

Cordierite (2MgO 2Al2O3 5SiO2) (ρ=1.8g/cm3)

500˚C

4.9x107

Hafnium Monocarbide (HfC)

240K

49x106

Zirconium Monocarbide (ZrC)

240K

53x106

Hafnium Monocarbide (HfC)

300K

60x106

Zirconium Monocarbide (ZrC)

300K

61–64x106

 

 

 

Source: data compiled by J.S. Park from No. 1 Materials Index, Peter T.B. Shaffer, Plenum Press, New York, (1964); Smithells Metals Reference Book, Eric A. Brandes, ed., in association with Fulmer Research Institute Ltd. 6th ed. London, Butterworths, Boston, (1983); and Ceramic Source, American Ceramic Society (1986–1991).

©2001 CRC Press LLC

Table 430. SELECTING RESISTIVITY OF CERAMICS

(SHEET 4 OF 5)

 

Temperature

Resistivity

 

Range of

Ceramic

Validity

(Ω–cm)

 

 

 

 

 

 

Tantalum Diboride (TaB2)

 

68 x106

Molybdenum Disilicide (MoSi2)

1600˚C

75–80x106

Cordierite (2MgO 2Al2O3 5SiO2) (ρ=2.1g/cm3)

500˚C

9.0x107

Zirconium Monocarbide (ZrC)

773K

97x106

Mullite (3Al2O3 2SiO2)

500˚C

108

Zirconium Monocarbide (ZrC)

1273K

137x106

Zirconium Mononitirde (TiN)

melting temp.

320x106

Titanium Mononitirde (TiN)

melting temp.

340x106

Aluminum Oxide (Al2O3)

700˚C

5.0x108

Cordierite (2MgO 2Al2O3 5SiO2) (ρ=1.8g/cm3)

300˚C

3.0x109

Boron Nitride (BN) (90% humidity)

25˚C

5.0x109

Mullite (3Al2O3 2SiO2)

300˚C

1010

Cordierite (2MgO 2Al2O3 5SiO2) (ρ=2.1g/cm3)

300˚C

2.0x1010

Boron Nitride (BN)

480˚C

2.3x1010

Aluminum Oxide (Al2O3)

500˚C

6.3x1010

Boron Nitride (BN) (50% humidity)

25˚C

7.0x1010

Silicon Carbide (SiC) (with 2.0 wt% BN additive)

 

1x1011

Aluminum Nitride (AlN)

room temp.

2x1011–1013

Cordierite (2MgO 2Al2O3 5SiO2) (ρ=2.3g/cm3)

100˚C

2.5x1011

Boron Nitride (BN) (20% humidity)

25˚C

1.0x1012

 

 

 

Source: data compiled by J.S. Park from No. 1 Materials Index, Peter T.B. Shaffer, Plenum Press, New York, (1964); Smithells Metals Reference Book, Eric A. Brandes, ed., in association with Fulmer Research Institute Ltd. 6th ed. London, Butterworths, Boston, (1983); and Ceramic Source, American Ceramic Society (1986–1991).

©2001 CRC Press LLC

Table 430. SELECTING RESISTIVITY OF CERAMICS

(SHEET 5 OF 5)

 

Temperature

Resistivity

 

Range of

Ceramic

Validity

(Ω–cm)

 

 

 

 

 

 

Cordierite (2MgO 2Al2O3 5SiO2) (ρ=1.8g/cm3)

100˚C

1.0x1013

Aluminum Oxide (Al2O3)

300˚C

1x1013

Silicon Carbide (SiC) (with 1.6 wt% BeO additive)

 

>1013

Trisilicon tetranitride (Si3N4)

 

>1013

Boron Nitride (BN)

25˚C

1.7x1013

Aluminum Oxide (Al2O3)

100˚C

2x1013

Cordierite (2MgO 2Al2O3 5SiO2) (ρ=2.1g/cm3)

100˚C

3.0x1013

Silicon Carbide (SiC) (with 1 wt% Be additive)

 

3x1013

Silicon Carbide (SiC) (with 3.2 wt% BeO additive)

 

4x1013

Cordierite (2MgO 2Al2O3 5SiO2) (ρ=1.8g/cm3)

25˚C

1.0x1014

Cordierite (2MgO 2Al2O3 5SiO2) (ρ=2.3g/cm3)

25˚C

1x1014

Mullite (3Al2O3 2SiO2)

25˚C

>1014

Cordierite (2MgO 2Al2O3 5SiO2) (ρ=2.1g/cm3)

25˚C

>1x1014

Beryllium Oxide (BeO)

500˚C

1–5x1015

Beryllium Oxide (BeO)

300˚C

>1015

Aluminum Oxide (Al2O3)

25˚C

>10x1014

Magnesium Oxide (MgO)

27˚C

1.3x1015

Beryllium Oxide (BeO)

700˚C

1.5–2x1015

Beryllium Oxide (BeO)

1000˚C

4–7x1015

Beryllium Oxide (BeO)

25˚C

>1017

Silicon Dioxide (SiO2)

room temp.

1018

 

 

 

Source: data compiled by J.S. Park from No. 1 Materials Index, Peter T.B. Shaffer, Plenum Press, New York, (1964); Smithells Metals Reference Book, Eric A. Brandes, ed., in association with Fulmer Research Institute Ltd. 6th ed. London, Butterworths, Boston, (1983); and Ceramic Source, American Ceramic Society (1986–1991).

©2001 CRC Press LLC

Table 431. SELECTING VOLUME RESISTIVITY OF GLASS

(SHEET 1 OF 13)

 

Temperature

Resistivity

Glass

(˚C)

(log Ω cm)

 

 

 

 

 

 

SiO2–Na2O glass (57.5% mol Na2O)

1300

–0.67

SiO2–Na2O glass (49.3% mol Na2O)

1300

–0.61

SiO2–Na2O glass (57.5% mol Na2O)

1200

–0.61

SiO2–Na2O glass (49.3% mol Na2O)

1200

–0.56

SiO2–Na2O glass (44.5% mol Na2O)

1300

–0.52

SiO2–Na2O glass (57.5% mol Na2O)

1100

–0.52

SiO2–Na2O glass (49.3% mol Na2O)

1100

–0.47

SiO2–Na2O glass (44.5% mol Na2O)

1200

–0.46

SiO2–Na2O glass (39.5% mol Na2O)

1400

–0.45

SiO2–Na2O glass (39.5% mol Na2O)

1300

–0.39

SiO2–Na2O glass (44.5% mol Na2O)

1100

–0.38

SiO2–Na2O glass (34.7% mol Na2O)

1400

–0.33

SiO2–Na2O glass (39.5% mol Na2O)

1200

–0.32

SiO2–Na2O glass (34.7% mol Na2O)

1300

–0.27

SiO2–Na2O glass (39.5% mol Na2O)

1100

–0.24

SiO2–Na2O glass (34.7% mol Na2O)

1200

–0.20

SiO2–Na2O glass (29.7% mol Na2O)

1400

–0.16

SiO2–Na2O glass (39.5% mol Na2O)

1000

–0.13

SiO2–Na2O glass (34.7% mol Na2O)

1100

–0.11

SiO2–Na2O glass (29.7% mol Na2O)

1300

–0.10

SiO2–Na2O glass (29.7% mol Na2O)

1200

–0.02

SiO2–Na2O glass (34.7% mol Na2O)

1000

0.00

SiO2–Na2O glass (39.5% mol Na2O)

900

0.00

SiO2–Na2O glass (29.7% mol Na2O)

1100

0.08

 

 

 

Source: data compiled by J. S. Park from O. V. Mazurin, M. V. Streltsina and T. P. Shvaiko– Shvaikovskaya, Handbook of Glass Data, Part A and Part B, Elsevier, New York, 1983

©2001 CRC Press LLC

Table 431. SELECTING VOLUME RESISTIVITY OF GLASS

(SHEET 2 OF 13)

 

Temperature

Resistivity

Glass

(˚C)

(log Ω cm)

 

 

 

 

 

 

SiO2–Na2O glass (34.7% mol Na2O)

900

0.12

SiO2–Na2O glass (39.5% mol Na2O)

800

0.13

SiO2–Na2O glass (24.8% mol Na2O)

1200

0.17

SiO2–Na2O glass (29.7% mol Na2O)

1000

0.20

SiO2–Na2O glass (24.8% mol Na2O)

1100

0.26

SiO2–PbO glass (66.7% mol PbO)

1000

0.26

SiO2–Na2O glass (19.9% mol Na2O)

1300

0.30

SiO2–Na2O glass (39.5% mol Na2O)

700

0.33

SiO2–Na2O glass (29.7% mol Na2O)

900

0.34

SiO2–CaO glass (55.2% mol CaO)

1600

0.34

SiO2–Na2O glass (19.9% mol Na2O)

1200

0.38

SiO2–Na2O glass (24.8% mol Na2O)

1000

0.38

SiO2–CaO glass (51.4% mol CaO)

1618

0.38

SiO2–PbO glass (60% mol PbO)

1000

0.40

B2O3–Na2O glass (32.8% mol Na2O)

900

0.40

SiO2–CaO glass (55.2% mol CaO)

1550

0.42–0.43

SiO2–CaO glass (51.4% mol CaO)

1560

0.47

SiO2–Na2O glass (19.9% mol Na2O)

1100

0.48

SiO2–CaO glass (51.4% mol CaO)

1500

0.48–0.49

SiO2–PbO glass (66.7% mol PbO)

900

0.50

SiO2–CaO glass (55.2% mol CaO)

1499

0.51–0.53

SiO2–Na2O glass (24.8% mol Na2O)

900

0.52

SiO2–Na2O glass (29.7% mol Na2O)

800

0.52

SiO2–CaO glass (45.4% mol CaO)

1622

0.52

 

 

 

Source: data compiled by J. S. Park from O. V. Mazurin, M. V. Streltsina and T. P. Shvaiko– Shvaikovskaya, Handbook of Glass Data, Part A and Part B, Elsevier, New York, 1983

©2001 CRC Press LLC

Table 431. SELECTING VOLUME RESISTIVITY OF GLASS

(SHEET 3 OF 13)

 

Temperature

Resistivity

Glass

(˚C)

(log Ω cm)

 

 

 

 

 

 

SiO2–PbO glass (51.6% mol PbO)

1200

0.54

SiO2–Na2O glass (15% mol Na2O)

1500

0.56

SiO2–CaO glass (45.4% mol CaO)

1585

0.58–0.59

SiO2–PbO glass (50.0% mol PbO)

1200

0.60

B2O3–Na2O glass (32.8% mol Na2O)

800

0.60

SiO2–Na2O glass (15% mol Na2O)

1400

0.61

SiO2–Na2O glass (19.9% mol Na2O)

1000

0.61

SiO2–CaO glass (45.4% mol CaO)

1550

0.65

B2O3–Na2O glass (21.9% mol Na2O)

1000

0.65

SiO2–Na2O glass (39.5% mol Na2O)

600

0.67

SiO2–CaO glass (41.3% mol CaO)

1600

0.67–0.68

SiO2–PbO glass (51.6% mol PbO)

1100

0.70

B2O3–Na2O glass (27.5% mol Na2O)

900

0.70

B2O3–CaO glass (40.0% mol CaO)

1250

0.75

SiO2–Na2O glass (19.9% mol Na2O)

900

0.76

SiO2–PbO glass (60% mol PbO)

900

0.76

SiO2–CaO glass (41.3% mol CaO)

1550

0.76

SiO2–Na2O glass (29.7% mol Na2O)

700

0.78

SiO2–CaO glass (33.6% mol CaO)

1600

0.79–0.80

SiO2–PbO glass (50.0% mol PbO)

1100

0.80

SiO2–PbO glass (44.7% mol PbO)

1300

0.82

SiO2–PbO glass (66.7% mol PbO)

800

0.82

SiO2–CaO glass (41.3% mol CaO)

1519

0.82

B2O3–CaO glass (33.3% mol CaO)

1250

0.85

 

 

 

Source: data compiled by J. S. Park from O. V. Mazurin, M. V. Streltsina and T. P. Shvaiko– Shvaikovskaya, Handbook of Glass Data, Part A and Part B, Elsevier, New York, 1983

©2001 CRC Press LLC

Table 431. SELECTING VOLUME RESISTIVITY OF GLASS

(SHEET 4 OF 13)

 

Temperature

Resistivity

Glass

(˚C)

(log Ω cm)

 

 

 

 

 

 

B2O3–Na2O glass (17.3% mol Na2O)

1000

0.89

SiO2–Na2O glass (39.5% mol Na2O)

550

0.91

SiO2–Na2O glass (10% mol Na2O)

1600

0.92

SiO2–PbO glass (51.6% mol PbO)

1000

0.92

SiO2–CaO glass (33.6% mol CaO)

1560

0.93–0.94

B2O3–Na2O glass (21.9% mol Na2O)

900

0.94

SiO2–Na2O glass (19.9% mol Na2O)

800

0.96

SiO2–CaO glass (33.6% mol CaO)

1500

0.97

SiO2–PbO glass (44.7% mol PbO)

1200

0.98

B2O3–CaO glass (40.0% mol CaO)

1150

0.98

B2O3–Na2O glass (27.5% mol Na2O)

800

1.00

SiO2–PbO glass (50.0% mol PbO)

1000

1.02

B2O3–Na2O glass (32.8% mol Na2O)

700

1.02

SiO2–Na2O glass (10% mol Na2O)

1500

1.03

SiO2–PbO glass (38.5% mol PbO)

1300

1.04

SiO2–PbO glass (60% mol PbO)

800

1.07

B2O3–CaO glass (33.3% mol CaO)

1150

1.10

SiO2–PbO glass (44.7% mol PbO)

1100

1.15

SiO2–Na2O glass (29.7% mol Na2O)

600

1.16

B2O3–Na2O glass (17.3% mol Na2O)

900

1.18

SiO2–PbO glass (51.6% mol PbO)

900

1.20

B2O3–CaO glass (55.4% mol CaO)

1150

1.22

SiO2–PbO glass (38.5% mol PbO)

1200

1.26

B2O3–Na2O glass (21.9% mol Na2O)

800

1.29

 

 

 

Source: data compiled by J. S. Park from O. V. Mazurin, M. V. Streltsina and T. P. Shvaiko– Shvaikovskaya, Handbook of Glass Data, Part A and Part B, Elsevier, New York, 1983

©2001 CRC Press LLC

Table 431. SELECTING VOLUME RESISTIVITY OF GLASS

(SHEET 5 OF 13)

 

Temperature

Resistivity

Glass

(˚C)

(log Ω cm)

 

 

 

 

 

 

SiO2–Na2O glass (29.7% mol Na2O)

550

1.31

SiO2–PbO glass (66.7% mol PbO)

700

1.32

SiO2–Na2O glass (19.9% mol Na2O)

700

1.34

SiO2–PbO glass (50.0% mol PbO)

900

1.36

B2O3–Na2O glass (17.3% mol Na2O)

850

1.39

SiO2–PbO glass (44.7% mol PbO)

1000

1.40

B2O3–CaO glass (40.0% mol CaO)

1050

1.40

B2O3–Na2O glass (12.1% mol Na2O)

900

1.48

B2O3–CaO glass (33.3% mol CaO)

1050

1.52

SiO2–PbO glass (38.5% mol PbO)

1100

1.56

SiO2–PbO glass (51.6% mol PbO)

800

1.62

SiO2–Na2O glass (19.9% mol Na2O)

600

1.68

B2O3–CaO glass (55.4% mol CaO)

1050

1.70

SiO2–PbO glass (60% mol PbO)

650

1.72

SiO2–PbO glass (60% mol PbO)

700

1.74

SiO2–PbO glass (44.7% mol PbO)

900

1.82

B2O3–Na2O glass (12.1% mol Na2O)

800

1.89

SiO2–PbO glass (50.0% mol PbO)

800

1.90

SiO2–PbO glass (38.5% mol PbO)

1000

1.94

B2O3–Na2O glass (3.63% mol Na2O)

1000

2.00

B2O3–CaO glass (40.0% mol CaO)

950

2.06

B2O3–CaO glass (33.3% mol CaO)

950

2.25

SiO2 glass (0.5 atm Ar pressure)

2100

2.30

B2O3–Na2O glass (3.63% mol Na2O)

900

2.30

 

 

 

Source: data compiled by J. S. Park from O. V. Mazurin, M. V. Streltsina and T. P. Shvaiko– Shvaikovskaya, Handbook of Glass Data, Part A and Part B, Elsevier, New York, 1983

©2001 CRC Press LLC

Table 431. SELECTING VOLUME RESISTIVITY OF GLASS

(SHEET 6 OF 13)

 

Temperature

Resistivity

Glass

(˚C)

(log Ω cm)

 

 

 

 

 

 

SiO2–Na2O glass (45% mol Na2O)

350

2.35

SiO2–PbO glass (44.7% mol PbO)

800

2.38

B2O3–Na2O glass (12.1% mol Na2O)

700

2.43

B2O3–CaO glass (55.4% mol CaO)

950

2.46

SiO2–PbO glass (38.5% mol PbO)

900

2.47

SiO2–Na2O glass (48% mol Na2O)

300

2.58

SiO2–Na2O glass (40% mol Na2O)

350

2.66

SiO2–Na2O glass (45% mol Na2O)

300

2.69

SiO2 glass (0.5 atm Ar pressure)

2000

2.70

B2O3–Na2O glass (3.63% mol Na2O)

800

2.70

SiO2–Na2O glass (35% mol Na2O)

350

2.92

SiO2–Na2O glass (40% mol Na2O)

300

2.97

B2O3–CaO glass (40.0% mol CaO)

850

2.97

SiO2 glass (0.5 atm Ar pressure)

1900

3.00

B2O3–CaO glass (33.3% mol CaO)

850

3.10

SiO2–PbO glass (38.5% mol PbO)

800

3.20

SiO2–Al2O3 glass (5.51% wt Al2O3)

1900

3.20

SiO2–Al2O3 glass (10.86% wt Al2O3)

1900

3.20

SiO2–Na2O glass (36% mol Na2O)

300

3.22

SiO2–Al2O3 glass (2.83% wt Al2O3)

1900

3.28

SiO2–Na2O glass (45% mol Na2O)

250

3.30

SiO2–Na2O glass (33.3% mol Na2O)

300

3.34

SiO2–Al2O3 glass (10.86% wt Al2O3)

1700

3.34

SiO2–Al2O3 glass (5.51% wt Al2O3)

1700

3.36

 

 

 

Source: data compiled by J. S. Park from O. V. Mazurin, M. V. Streltsina and T. P. Shvaiko– Shvaikovskaya, Handbook of Glass Data, Part A and Part B, Elsevier, New York, 1983

©2001 CRC Press LLC

Table 431. SELECTING VOLUME RESISTIVITY OF GLASS

(SHEET 7 OF 13)

 

Temperature

Resistivity

Glass

(˚C)

(log Ω cm)

 

 

 

 

 

 

SiO2–Na2O glass (30% mol Na2O)

350

3.46

SiO2–Al2O3 glass (2.83% wt Al2O3)

1700

3.46

SiO2 glass (0.5 atm Ar pressure)

1800

3.48

SiO2–Na2O glass (25% mol Na2O)

350

3.52

SiO2–Al2O3 glass (10.86% wt Al2O3)

1500

3.52

SiO2–B2O3 glass (2.74% wt B2O3)

1900

3.56

SiO2–Al2O3 glass (5.51% wt Al2O3)

1500

3.56

SiO2–Na2O glass (40% mol Na2O)

250

3.59

SiO2–Na2O glass (30% mol Na2O)

300

3.64–3.78

SiO2–Al2O3 glass (2.83% wt Al2O3)

1500

3.67

SiO2–Al2O3 glass (10.86% wt Al2O3)

1300

3.74

SiO2–B2O3 glass (2.74% wt B2O3)

1700

3.76

SiO2–Al2O3 glass (5.51% wt Al2O3)

1300

3.76

SiO2–Na2O glass (20% mol Na2O)

350

3.80

SiO2–B2O3 glass (19.37% wt B2O3)

1900

3.84

SiO2–Na2O glass (35% mol Na2O)

250

3.85

B2O3–CaO glass (55.4% mol CaO)

850

3.86

SiO2–Na2O glass (27% mol Na2O)

300

3.94

SiO2–B2O3 glass (5.48% wt B2O3)

1900

3.94

SiO2–Al2O3 glass (2.83% wt Al2O3)

1300

3.94

SiO2–B2O3 glass (10.75% wt B2O3)

1900

3.98

SiO2 glass (0.5 atm Ar pressure)

1700

4.00

SiO2–B2O3 glass (19.37% wt B2O3)

1700

4.00

SiO2–B2O3 glass (2.74% wt B2O3)

1500

4.02

 

 

 

Source: data compiled by J. S. Park from O. V. Mazurin, M. V. Streltsina and T. P. Shvaiko– Shvaikovskaya, Handbook of Glass Data, Part A and Part B, Elsevier, New York, 1983

©2001 CRC Press LLC

Table 431. SELECTING VOLUME RESISTIVITY OF GLASS

(SHEET 8 OF 13)

 

Temperature

Resistivity

Glass

(˚C)

(log Ω cm)

 

 

 

 

 

 

SiO2–Al2O3 glass (10.86% wt Al2O3)

1100

4.02

SiO2–Na2O glass (25% mol Na2O)

300

4.03

SiO2–Na2O glass (48% mol Na2O)

150

4.09

SiO2–B2O3 glass (5.48% wt B2O3)

1700

4.10

SiO2–Al2O3 glass (5.51% wt Al2O3)

1100

4.15

SiO2–B2O3 glass (10.75% wt B2O3)

1700

4.16

SiO2–B2O3 glass (19.37% wt B2O3)

1500

4.22

SiO2–Al2O3 glass (2.83% wt Al2O3)

1100

4.29

SiO2–B2O3 glass (5.48% wt B2O3)

1500

4.30

SiO2–Na2O glass (15% mol Na2O)

350

4.32

SiO2–Na2O glass (45% mol Na2O)

150

4.33

SiO2–Na2O glass (20% mol Na2O)

300

4.36–4.64

SiO2 glass (0.5 atm Ar pressure)

1600

4.40

SiO2–PbO glass (38.5% mol PbO)

700

4.40

SiO2–B2O3 glass (2.74% wt B2O3)

1300

4.40

SiO2–B2O3 glass (10.75% wt B2O3)

1500

4.40

SiO2–Na2O glass (30% mol Na2O)

250

4.42

SiO2–B2O3 glass (19.37% wt B2O3)

1300

4.48

SiO2–Na2O glass (25% mol Na2O)

250

4.50

SiO2–Al2O3 glass (10.86% wt Al2O3)

900

4.54

SiO2–B2O3 glass (5.48% wt B2O3)

1300

4.56

SiO2–Na2O glass (40% mol Na2O)

150

4.58

SiO2–Al2O3 glass (5.51% wt Al2O3)

900

4.65

SiO2 glass (0.5 atm Ar pressure)

1500

4.66

 

 

 

Source: data compiled by J. S. Park from O. V. Mazurin, M. V. Streltsina and T. P. Shvaiko– Shvaikovskaya, Handbook of Glass Data, Part A and Part B, Elsevier, New York, 1983

©2001 CRC Press LLC

Table 431. SELECTING VOLUME RESISTIVITY OF GLASS

(SHEET 9 OF 13)

 

Temperature

Resistivity

Glass

(˚C)

(log Ω cm)

 

 

 

 

 

 

SiO2–B2O3 glass (10.75% wt B2O3)

1300

4.69

SiO2–B2O3 glass (2.74% wt B2O3)

1100

4.72

SiO2–Na2O glass (13% mol Na2O)

300

4.77–4.79

SiO2–B2O3 glass (19.37% wt B2O3)

1100

4.82

SiO2–Al2O3 glass (2.83% wt Al2O3)

900

4.82

SiO2–Na2O glass (20% mol Na2O)

250

4.85

SiO2–Na2O glass (36% mol Na2O)

150

4.89

SiO2 glass

1500

4.90

SiO2–Na2O glass (10% mol Na2O)

350

4.96

SiO2 glass

1400

5.00

SiO2–Na2O glass (33.3% mol Na2O)

150

5.06

SiO2–B2O3 glass (10.75% wt B2O3)

1100

5.08

SiO2 glass

1300

5.15

SiO2–Na2O glass (44.2% mol Na2O)

100

5.15

SiO2–B2O3 glass (5.48% wt B2O3)

1100

5.16

SiO2–Na2O glass (10% mol Na2O)

300

5.18

SiO2 glass

1200

5.30

SiO2–Na2O glass (7.5% mol Na2O)

300

5.30

SiO2–B2O3 glass (2.74% wt B2O3)

900

5.30

SiO2–Al2O3 glass (5.51% wt Al2O3)

700

5.34

SiO2–Al2O3 glass (10.86% wt Al2O3)

700

5.38

SiO2–Na2O glass (15% mol Na2O)

250

5.44

SiO2 glass

1100

5.46

SiO2–Na2O glass (30% mol Na2O)

150

5.48–5.75

 

 

 

Source: data compiled by J. S. Park from O. V. Mazurin, M. V. Streltsina and T. P. Shvaiko– Shvaikovskaya, Handbook of Glass Data, Part A and Part B, Elsevier, New York, 1983

©2001 CRC Press LLC

Table 431. SELECTING VOLUME RESISTIVITY OF GLASS

(SHEET 10 OF 13)

 

Temperature

Resistivity

Glass

(˚C)

(log Ω cm)

 

 

 

 

 

 

B2O3 glass

840

5.5

SiO2–B2O3 glass (5.48% wt B2O3)

900

5.64

SiO2–B2O3 glass (19.37% wt B2O3)

900

5.65

SiO2 glass

1000

5.66

SiO2–B2O3 glass (10.75% wt B2O3)

900

5.74

SiO2–Al2O3 glass (2.83% wt Al2O3)

700

5.74

B2O3 glass

780

5.8

SiO2–Na2O glass (27% mol Na2O)

150

5.87

SiO2 glass

900

5.90

SiO2–Na2O glass (25% mol Na2O)

150

6.05

B2O3–CaO glass (55.4% mol CaO)

750

6.13

SiO2–Na2O glass (10% mol Na2O)

250

6.14

B2O3 glass

730

6.2

SiO2 glass

800

6.20

SiO2–Na2O glass (5% mol Na2O)

350

6.37

SiO2–Na2O glass (20% mol Na2O)

150

6.45–6.80

SiO2 glass

700

6.56

SiO2–Na2O glass (30.2% mol Na2O)

100

6.58

B2O3 glass

680

6.6

B2O3 glass

640

6.9

SiO2–Na2O glass (13% mol Na2O)

150

6.90–6.96

SiO2 glass

600

7.00

B2O3 glass

600

7.3

SiO2–Na2O glass (5% mol Na2O)

300

7.33–8.25

 

 

 

Source: data compiled by J. S. Park from O. V. Mazurin, M. V. Streltsina and T. P. Shvaiko– Shvaikovskaya, Handbook of Glass Data, Part A and Part B, Elsevier, New York, 1983

©2001 CRC Press LLC

Table 431. SELECTING VOLUME RESISTIVITY OF GLASS

(SHEET 11 OF 13)

 

 

Temperature

Resistivity

Glass

(˚C)

(log Ω cm)

 

 

 

 

 

 

 

 

SiO2–Na2O glass

(10% mol Na2O)

150

7.35

SiO2–Na2O glass (7.5% mol Na2O)

150

7.59

B2O3 glass

560

7.6

SiO2–Na2O glass (5% mol Na2O)

250

7.63

SiO2 glass

500

7.80

SiO2–PbO glass

(65% mol PbO)

300

7.81

SiO2–PbO glass

(60% mol PbO)

300

8.11

SiO2–Na2O glass (15.1% mol Na2O)

100

8.15

B2O3–Na2O glass (40% mol Na2O)

100

8.46

SiO2 glass

400

8.5–10.80

SiO2–CaO glass

(50% mol CaO)

400

8.70

SiO2–PbO glass

(50% mol PbO)

300

8.80–9.2

B2O3–Na2O glass (30% mol Na2O)

100

8.82

B2O3–Na2O glass (40% mol Na2O)

80

9.08

B2O3–Na2O glass (30% mol Na2O)

80

9.43

SiO2–PbO glass

(40% mol PbO)

300

9.48

B2O3–Na2O glass (40% mol Na2O)

60

9.73

SiO2–PbO glass

(65% mol PbO)

200

9.76

SiO2–Na2O glass (7.8% mol Na2O)

100

9.89

SiO2–PbO glass (35% mol PbO)

300

9.89

SiO2–PbO glass

(60% mol PbO)

200

10.04

SiO2–PbO glass (57.1% mol PbO)

172

10.14

B2O3–Na2O glass (30% mol Na2O)

60

10.14

SiO2–PbO glass (63.2% mol PbO)

159

10.34

 

 

 

 

Source: data compiled by J. S. Park from O. V. Mazurin, M. V. Streltsina and T. P. Shvaiko– Shvaikovskaya, Handbook of Glass Data, Part A and Part B, Elsevier, New York, 1983

©2001 CRC Press LLC

Table 431. SELECTING VOLUME RESISTIVITY OF GLASS

(SHEET 12 OF 13)

 

Temperature

Resistivity

Glass

(˚C)

(log Ω cm)

 

 

 

 

 

 

SiO2–PbO glass (30% mol PbO)

300

10.44

SiO2–Na2O glass (5% mol Na2O)

150

10.45–11.71

B2O3–Na2O glass (40% mol Na2O)

40

10.48

SiO2–PbO glass (50% mol PbO)

200

10.69

SiO2 glass

250

11.0–13.6

B2O3–Na2O glass (20% mol Na2O)

100

11.28

SiO2–PbO glass (40% mol PbO)

200

11.54

SiO2–PbO glass (51.4% mol PbO)

139

11.59

B2O3–Na2O glass (10% mol Na2O)

100

11.61

SiO2–PbO glass (40.2% mol PbO)

175

11.70

SiO2–PbO glass (47.3% mol PbO)

149

11.74

B2O3–Na2O glass (30% mol Na2O)

40

11.90

B2O3–Na2O glass (20% mol Na2O)

80

12.05

SiO2–PbO glass (35% mol PbO)

200

12.10

SiO2–CaO glass (50% mol CaO)

300

12.2

B2O3–Na2O glass (10% mol Na2O)

80

12.40

B2O3–Na2O glass (20% mol Na2O)

60

12.91

SiO2–PbO glass (30% mol PbO)

200

12.94

B2O3–CaO glass (33.3% mol CaO)

300

13.16

B2O3–Na2O glass (10% mol Na2O)

60

13.21

B2O3–CaO glass (33.3% mol CaO)

250

13.50

B2O3–Na2O glass (16% mol Na2O)

100

13.58

SiO2–PbO glass (33.8% mol PbO)

135

13.68

SiO2–PbO glass (57.1% mol PbO)

77

13.70

 

 

 

Source: data compiled by J. S. Park from O. V. Mazurin, M. V. Streltsina and T. P. Shvaiko– Shvaikovskaya, Handbook of Glass Data, Part A and Part B, Elsevier, New York, 1983

©2001 CRC Press LLC

Table 431. SELECTING VOLUME RESISTIVITY OF GLASS

(SHEET 13 OF 13)

 

Temperature

Resistivity

Glass

(˚C)

(log Ω cm)

 

 

 

 

 

 

B2O3–Na2O glass (20% mol Na2O)

40

13.86

B2O3–CaO glass (33.3% mol CaO)

200

13.92

B2O3–Na2O glass (10% mol Na2O)

40

14.20

SiO2–PbO glass (63.2% mol PbO)

57

14.29

B2O3–Na2O glass (16% mol Na2O)

80

14.32

B2O3–CaO glass (33.3% mol CaO)

150

14.40

SiO2–PbO glass (47.3% mol PbO)

79

14.48

SiO2–PbO glass (51.4% mol PbO)

65

14.52

SiO2–PbO glass (40.2% mol PbO)

78

14.85

B2O3–Na2O glass (16% mol Na2O)

60

15.08

B2O3–Na2O glass (16% mol Na2O)

40

15.89

SiO2–PbO glass (33.8% mol PbO)

66

16.14

 

 

 

Source: data compiled by J. S. Park from O. V. Mazurin, M. V. Streltsina and T. P. Shvaiko– Shvaikovskaya, Handbook of Glass Data, Part A and Part B, Elsevier, New York, 1983

©2001 CRC Press LLC

Table 432. SELECTING VOLUME RESISTIVITY OF POLYMERS

(SHEET 1 OF 6)

 

Volume Resistivity

 

(ASTM D257)

Polymer

(Ω • cm)

 

 

 

 

Diallyl Phthalates; Molded: Dacron Filled

102—2.5 x 104

Diallyl Phthalates; Molded: Asbestos Filled

102—5 x 103

Diallyl Phthalates; Molded: Glass Fiber Filled

104—5 x 104

Diallyl Phthalates; Molded: Orlon Filled

6 x 104—6 x 106

Standard Epoxies: Cast Flexible

9.1 x 105—6.7 x 109

Standard Epoxies; Reinforced: High Strength Laminate

6.6 x 107—109

Molded Rubber Phenolic—Woodflour or Flock Filled

108—1011

Phenolics; Molded: General: Woodflour and Flock Filled

109—1013

Cellulose Acetate; Molded, Extruded; ASTM Grade: H6—1

1010—1013

Cellulose Acetate; Molded, Extruded; ASTM Grade: H4—1

1010—1013

Cellulose Acetate; Molded, Extruded; ASTM Grade: H2—1

1010—1013

Cellulose Acetate; ASTM Grade: MH—1, MH—2

1010—1013

Cellulose Acetate; ASTM Grade: MS—1, MS—2

1010—1013

Cellulose Acetate; Molded, Extruded; ASTM Grade: S2—1

1010—1013

Phenolics; Molded: High Shock: Chopped Fabric or Cord Filled

>1010

Phenolics; Molded: Very High Shock: Glass Fiber Filled

1010—1011

Phenolics: Molded: Arc Resistant—Mineral Filled

1010—1012

Ureas; Molded: Cellulose Filled (ASTM Type 2)

5—8 x 1010

Cellulose Acetate Butyrate; ASTM Grade: H4

1011—1014

Cellulose Acetate Butyrate; ASTM Grade: MH

1011—1014

 

 

Source: data compiled by J.S. Park from Charles T. Lynch, CRC Handbook of Materials Science, Vol. 3, CRC Press, Boca Raton, Florida, 1975 and Engineered Materials Handbook, Vol.2, Engineering Plastics, ASM International, Metals Park, Ohio, 1988.

©2001 CRC Press LLC

Table 432. SELECTING VOLUME RESISTIVITY OF POLYMERS

(SHEET 2 OF 6)

 

Volume Resistivity

 

(ASTM D257)

Polymer

(Ω • cm)

 

 

 

 

Cellulose Acetate Butyrate; ASTM Grade: S2

1011—1014

Cellusose Acetate Propionate; ASTM Grade: 1

1011—1014

Cellusose Acetate Propionate; ASTM Grade: 3

1011—1014

Cellusose Acetate Propionate; ASTM Grade: 6

1011—1014

Phenolics: Molded: Rubber Phenolic—Chopped Fabric Filled

1011

Phenolics: Molded: Rubber Phenolic—Asbestos Filled

1011

Ureas; Molded: Alpha—Cellulose filled (ASTM Type l)

0.5—5 x 1011

Melamines; Molded: Glass Fiber Filled

1—7 x 1011

Phenolics; Molded: Shock: Paper, Flock, or Pulp Filled

1—50 x 1011

Nylons: Type 8

1.5 x 1011

Polyvinyl Chloride & Copolymers: Nonrigid—Electrical

4—300 x 1011

Melamines; Molded: Alpha Cellulose And Mineral Filled

1012

Polyesters, Thermosets; Cast polyyester: Flexible

1012

Melamines; Molded: Cellulose Electrical Filled

1012—1013

Reinforced Polyester: High Strength (Glass Fibers)

1 x 1012 —1 x 1013

Reinforced Polyester: Heat & Chemical Resistant (Asbestos)

1 x 1012 —1 x 1013

Polyvinyl Chloride & Copolymers: Nonrigid—General

1—700 x 1012

Polyesters, Thermosets; Cast polyyester: Rigid

1013

PVC–Acrylic Alloy: PVC–Acrylic Sheet

1—5 x 1013

Nylons: Type 11

2 x 1013

 

 

Source: data compiled by J.S. Park from Charles T. Lynch, CRC Handbook of Materials Science, Vol. 3, CRC Press, Boca Raton, Florida, 1975 and Engineered Materials Handbook, Vol.2, Engineering Plastics, ASM International, Metals Park, Ohio, 1988.

©2001 CRC Press LLC

Table 432. SELECTING VOLUME RESISTIVITY OF POLYMERS

(SHEET 3 OF 6)

 

Volume Resistivity

 

(ASTM D257)

Polymer

(Ω • cm)

 

 

 

 

Nylons; Molded, Extruded; Type 6: General purpose

4.5 x 1013

Alkyds; Molded: Putty (Encapsulating)

1014

Alkyds; Molded: Rope (General Purpose)

1014

Alkyds; Molded: Glass reinforced (heavy duty parts)

1014

Acrylics; Moldings: Grades 5, 6, 8

>1014

Alkyds; Molded: Granular (high speed molding)

1014 — 1015

Nylons: Type 12

1014 —1015

6/6 Nylon: General purpose molding

1014—1015

Polyacetal Copolymer: Standard

1 x 1014

Polyacetal Copolymer: High Flow

1.0 x 1014

Polyacetal Copolymer: 25% Glass Reinforced

1.2 x 1014

High Performance Epoxies: Molded

1.4—5.5 x 1014

Woven Glass Fabric/ Silicone Laminate

2—5 x 1014

High Performance Epoxies: Cast, rigid

2.10 x 1014

Nylons; Type 6: Cast

2.6 x 1014

Nylons; Type 6: Glass fiber (30%) Reinforced

2.8 x 1014—1.5 x 1015

Polyester; Thermoplastic Moldings: Asbestos—Filled Grade

3 x 1014

Thermoset Carbonate: Allyl Diglycol Carbonate

4 x 1014

Polyphenylene sulfide: 40% Glass Reinforced

4.5 x 1014

Polyvinylidene— fluoride (PVDF)

5 x 1014

Polyacetal Homopolymer: 20% Glass Reinforced

5 x 1014

Granular (Silica) Reinforced Silicones

5 x 1014

Fibrous (Glass) Reinforced Silicones

9 x 1014

Polyvinyl Chloride & Copolymers: Rigid—Normal Impact

1014—1016

 

 

Source: data compiled by J.S. Park from Charles T. Lynch, CRC Handbook of Materials Science, Vol. 3, CRC Press, Boca Raton, Florida, 1975 and Engineered Materials Handbook, Vol.2, Engineering Plastics, ASM International, Metals Park, Ohio, 1988.

©2001 CRC Press LLC

Table 432. SELECTING VOLUME RESISTIVITY OF POLYMERS

(SHEET 4 OF 6)

 

Volume Resistivity

 

(ASTM D257)

Polymer

(Ω • cm)

 

 

 

 

Vinylidene chloride

1014—1016

Ceramic Reinforced (PTFE)

1015

6/6 Nylon: General Purpose Extrusion

1015

6/10 Nylon: General purpose

1015

Acrylics; Cast Resin Sheets, Rods: General purpose, type II

>1015

Acrylics; Cast Resin Sheets, Rods: General purpose, type I

>1015

Polyethylenes; Molded, Extruded; Type II: Melt Index 20

>1015

Polyethylenes; Molded, Extruded; Type II: Melt Index l.0—1.9

>1015

Polyethylenes; Molded, Extruded; Type III: Melt Index 0.2—0.9

>1015

Polyethylenes; Type III: Melt Melt Index 0.l—12.0

>1015

Polyethylenes; Molded, Extruded; Type III: Melt Index 1.5—15

>1015

Polyethylenes; Molded, Extruded; Type III: High Molecular Weight

>1015

Olefin Copolymers; Molded: EVA (ethylene vinyl acetate)

0.15 x 1015

Chlorinated Polyvinyl Chloride

1 x 1015—2 x 1016

Standard Epoxies: Molded

1—5 x 1015

Polyacetal Homopolymer: Standard

1 x 1015

ABS Resins; Molded, Extruded: High impact

1—4 x 1015

ABS Resins; Molded, Extruded: Very high impact

1—4 x 1015

ABS Resins; Molded, Extruded: Low temperature impact

1—4 x 1015

ABS Resins; Molded, Extruded: Heat resistant

1—5 x 1015

Polycarbonate (40% Glass Fiber Reinforced)

1.4 x 1015

Polypropylene: Asbestos Filled

1.5 x 1015

Polyester; Thermoplastic Moldings: General Purpose Grade

2 x 1015

ABS Resins; Molded, Extruded: Medium impact

2—4 x 1015

 

 

Source: data compiled by J.S. Park from Charles T. Lynch, CRC Handbook of Materials Science, Vol. 3, CRC Press, Boca Raton, Florida, 1975 and Engineered Materials Handbook, Vol.2, Engineering Plastics, ASM International, Metals Park, Ohio, 1988.

©2001 CRC Press LLC

Table 432. SELECTING VOLUME RESISTIVITY OF POLYMERS

(SHEET 5 OF 6)

 

Volume Resistivity

 

(ASTM D257)

Polymer

(Ω • cm)

 

 

 

 

Olefin Copolymers; Molded: EEA (ethylene ethyl acrylate)

2.4 x 1015

6/6 Nylon; Molded, Extruded: Glass Fiber Reinforced

2.6—5.5 x 1015

Polymides: Unreinforced

4 x 1015

PVC–Acrylic Alloy: PVC–Acrylic Injection Molded

5 x 1015

Standard Epoxies: Cast Rigid

6.1 x 1015

Reinforced Polyester Sheet Molding, General Purpose

6.4 x 1015 —2.2 x 1016

Polymides: Glass Reinforced

9.2 x 1015

Olefin Copolymers; Molded: Ionomer

10 x 1015

Styrene Acrylonitrile (SAN)

>1016

Epoxy Novolacs: Cast, rigid

>1016

Olefin Copolymers; Molded: Polyallomer

>1016

Polystyrenes; Molded: General Purpose

>1016

Polystyrenes; Molded: Medium Impact

>1016

Polystyrenes; Molded: High Impact

>1016

Polyester; Thermoplastic Moldings: General Purpose Grade

1—4 x 1016

Chlorinated Polyether

1.5 x 1016

Polypropylene: Glass Reinforced

1.7 x 1016

Acrylics; Moldings: High Impact Grade

2.0 x 1016

Polycarbonate

2.1 x 1016

ABS–Polycarbonate Alloy

2.2 x 1016

Polyester; Thermoplastic Moldings: Glass Reinforced Grades

3.2—3.3 x 1016

Polyarylsulfone

3.2—7.71 x 1016

Polyester Moldings: Glass Reinforced Self Extinguishing

3.4 x 1016

Polystyrenes; Molded: Glass Fiber -30% Reinforced

3.6 x 1016

 

 

Source: data compiled by J.S. Park from Charles T. Lynch, CRC Handbook of Materials Science, Vol. 3, CRC Press, Boca Raton, Florida, 1975 and Engineered Materials Handbook, Vol.2, Engineering Plastics, ASM International, Metals Park, Ohio, 1988.

©2001 CRC Press LLC

Table 432. SELECTING VOLUME RESISTIVITY OF POLYMERS

(SHEET 6 OF 6)

 

Volume Resistivity

 

(ASTM D257)

Polymer

(Ω • cm)

 

 

 

 

Polypropylene: Flame Retardant

4 x 1016—1017

Glass Fiber (30%) Reinforced SAN

4.4 x 1016

Phenylene Oxides (Noryl): Standard

5 x 1016

Phenylene Oxides: SE—100

1017

Phenylene Oxides: SE—1

1017

Phenylene Oxides: Glass Fiber Reinforced

1017

Phenylene Oxides (Noryl): Glass Fiber Reinforced

1017

Polypropylene: High Impact

1017

Polypropylene: General Purpose

>1017

Polyethylenes; Molded, Extruded; Type I: Melt Index 0.3—3.6

1017—1019

Polyethylenes; Molded, Extruded; Type I: Melt Index 6—26

1017—1019

Polyethylenes; Molded, Extruded; Type I: Melt Index 200

1017—1019

Polytrifluoro Chloroethylene (PTFCE), Molded,Extruded

1018

Polytetrafluoroethylene (PTFE), Molded,Extruded

>1018

Fluorinated Ethylene Propylene (FEP)

>2 x 1018

 

 

Source: data compiled by J.S. Park from Charles T. Lynch, CRC Handbook of Materials Science, Vol. 3, CRC Press, Boca Raton, Florida, 1975 and Engineered Materials Handbook, Vol.2, Engineering Plastics, ASM International, Metals Park, Ohio, 1988.

©2001 CRC Press LLC

Table 433. SELECTING CRITICAL TEMPERATURE OF

SUPERCONDUCTIVE ELEMENTS (SHEET 1 OF 2)

Element

Tc(K)

 

 

 

 

W

0.0154

Be

0.026

Ir

0.11-0.14

Ti

0.39

Ru

0.493

Cd

0.518-0.52

Zr

0.53

Zr (ω)

0.65

Os

0.655

Zn

0.875

Mo

0.916

Ga

1.0833

Al

1.175

Th

1.39

Pa

1.4

Re

1.697

Ti

2.332-2.39

Sb

2.6-2.7a

In

3.405

Sn

3.721

Hg (β)

3.949

Hg (α)

4.154

Ta

4.47

La (α)

4.88

 

 

a Metastable.

Source: data from Roberts, B. W., Properties of Selected Superconductive Materials - 1974 Supplement, NBS Technical Note 825, National Bureau of Standards, U.S. Government Printing Office, Washington,D.C., 1974, 10.

©2001 CRC Press LLC

Table 433. SELECTING CRITICAL TEMPERATURE OF

SUPERCONDUCTIVE ELEMENTS (SHEET 2 OF 2)

Element

Tc(K)

 

 

 

 

V

5.43-5.31

Ga (β)

5.90-6.2

La (β)

6.00

Pb

7.23

Ga (γ)

7.62

Tc

7.73-7.78

Ga (δ)

7.85

Nb

9.25

 

 

a Metastable.

Source: data from Roberts, B. W., Properties of Selected Superconductive Materials - 1974 Supplement, NBS Technical Note 825, National Bureau of Standards, U.S. Government Printing Office, Washington,D.C., 1974, 10.

©2001 CRC Press LLC

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