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Plastic Quality
 
   
 

character

ASTM

UHMW-PE

PE

PP

Specific gravity

D792

0.94

0.941-0.965

0.902-0.910

p.s.i Tensile
strength

D638

2500-3500

3100-5500

4300-5500

Elongation

D638

500

20-1300

200-700

p.s.i
Comprehension
strength

D695

2400

2700-3600

5500-8000

Impact strength

D256

No break

0.5-20.0

0.5-2.2at(1/8*1/2 inbar)

Hardness,
Rockwell

D785

D60-70
(Shore)

D60-DD70
(Shore)

80-110

Flexural Modulus

D790

1.30-1.40

1.0-2.6

1.7-2.5

Coefficient
of friction

 

-

0.080.18

0.3

cm Thermal
conductivity

C177

11-12.4

11.0-12.4

2.8

Thermal expansion

D696

7.2

11.0-13.0

5.8-10.2

Resistance
to heat ℃

 

120 ℃

80 ℃

110 ℃

Volume resitivity

D257

10 16

10 16

10 16

1/8-in.thickness volts
mil dielectric strength

D149

710

450-500

500-660

Dielectric constant

D150

2.25-2.35

2.30-2.35

2.2-2.6

Dissipation
(power)factor

D150

0.00021

0.0005

0.0005-0.0018

1KHZ Water
absorption
24hr 3.2m m ,
Thickness%

D570

0.001

0.01

0.01-0.03

in min
Burning rate

D635

-

1.00-1.04

0.75-0.82

Effect of
weak acids

D543

VeryResistant

Resistant

None

Effect of
strong acid

D543

Attachedslowly
byoxidizing
acids

Attachedslowly byoxidizing
acids

Attachedslowly byoxidizing
acids

Effect of
weak Alkalis

D543

Very resistance

Very resistant

None

Effect of
strong Alkalis

D543

Very resistant

Very resistant

Very resistant

Effect of
organic
solvents

D543

Resistantbelow 80 ℃

Resistantbelow 80 ℃

Resistantbelow 80 ℃


character

SHORE

ACETAL

NYLON

MC
CAST NYLOM

Specific gravity

1.30-1.58

1.41

1.12-1.14

1.15-1.17

p.s.i Tensile
strength

6000-7500

8800

11800-10000

11000-14000

Elongation

40-80

40-75

100a -300b

30-320

p.s.i
Comprehension
strength

8000-13000

16000(10% defl.)

13000

-

Impact strength

0.4-20.0

1.0-1.5(1/2*1/2 inbar)

1.0a -3.0b

0.8-3.0(1/2*1/2 inbar)

Hardness,
Rockwell

65-85
(Sgire D)

M78-M80

R119

R95 -R1220

Flexural Modulus

3-5

3.75

3.9a -1.4b

1.1 -4.5a
0.8-1.6b

Coefficient
of friction

0.45

0.18

0.37

0.35

cm Thermal
conductivity

3.5-5.0

5.5

5.8

-

Thermal expansion

5.0-10.0

8.5

8.3

9.0

Resistance
to heat ℃

65 ℃
75 ℃

80 ℃
120 ℃

80 ℃
120 ℃

121 ℃
149 ℃

Volume resitivity

10 16

1.0*10 14

1.0*10 14

-

1/8-in.thickness volts
mil dielectric strength

350-500

500
(90mil)

400

300-400

Dielectric constant

3.0-3.8

3.7

3.7

3.7

Dissipation
(power)factor

0.009-0.0177

0.0010
(40mile)

0.02

0.02

1KHZ Water
absorption
24hr 3.2m m ,
Thickness%

0.04-0.4

0.02

1.3-1.9

0.6-1.2

in min
Burning rate

-

1.0-1.1

-

-

Effect of
weak acids

None

Resistant to some

Resistant

Resistant

Effect of
strong acid

None

Attached

Attached

Attached

Effect of
weak Alkalis

None

Attached

None

None

Effect of
strong Alkalis

None

Attached

resistant

resistant

Effect of
organic
solvents


Resist Alcohol , aliphatic

Excellent resistance to practically
all solvents

Excellent resistance
to practically all
solvents

Excellent resistance
to practically all
solvents


character

PTFE

ABS

PC

Specific gravity

2.14-2.20

1.03

1.2

p.s.i Tensile
strength

2000-5000

4600

 

Elongation

300-400

 

 

p.s.i
Comprehension
strength

1700

 

 

Impact strength

3.0

 

 

Hardness,
Rockwell

D50-D55
(Shore)

R86

 

Flexural Modulus

-

2.3

-

Coefficient
of friction

0.040.1

0.38

 

cm Thermal
conductivity

6.0

1.7-2.1

4-6

Thermal expansion

10.0

7.4

7

Resistance
to heat ℃

260 ℃

70-100

121

Volume resitivity

10 18

9-10 15

.1*10 16

1/8-in.thickness volts
mil dielectric strength

480

230

 

Dielectric constant

2.1

 

3.17

Dissipation
(power)factor

0.0002

-

0.0021

1KHZ Water
absorption
24hr 3.2m m ,
Thickness%

0.00

0.30

0.15

in min
Burning rate

-

-

-

Effect of
weak acids

None

 

 

Effect of
strong acid

None

 

Resistant
(Limited)

Effect of
weak Alkalis

None

 

Attached

Effect of
strong Alkalis

None

 

Attached

Effect of
organic
solvents

None

 

Soluble in
chlorinated hydrocarbons
Partially
soluble