| |
|
|
|
|
Acetron
GP Acetal |
Delrin
Acetal |
Delrin
570 Blend |
25%
Glass-Filled Acetal Copolymer |
Delrin
AF Filled Acetal |
Acetron
NS Filled Acetal |
Delrin
500 CL |
| |
|
|
Units |
ASTM
Test Method |
Poly-oxymethylene
Copolymer |
Poly-oxymethylene
Homopolymer |
20%
Glass Filled POM Homopolymer |
25%
Glass Filled POM Copolymer |
PTFE
Filled POM Homopolymer |
Lubricated
POM Copolymer |
Lubricated
POM Homopolymer |
| MECHANICAL |
1 |
Strength
to Weight Ratio |
ksi |
- |
|
|
|
|
|
|
|
| 2 |
Specific
Gravity @73 F |
- |
D792 |
1.41 |
1.41 |
1.56 |
1.59 |
1.50 |
1.44 |
1.42 |
| 3 |
Tensile
Strength @73 F, (ult)/(yld) |
psi |
D638 |
9500
(ult) |
11000
(ult) |
8500
(ult) |
16000(yld) |
8000
(ult) |
7500
(ult) |
9500
(yld) |
| 4 |
Tensile
Modulus of Elasticity @ 73 F |
psi |
D638 |
400000 |
450000 |
900000 |
1200000 |
435000 |
400000 |
450000 |
| 5 |
Tensile
Elongation at Break @ 73 F |
% |
D638 |
30 |
30 |
12 |
2-3% |
15 |
10 |
40 |
| 6 |
Flexural
Strength @ 73 F |
psi |
D790 |
12000 |
13000 |
10700 |
- |
12000 |
15000 |
13000 |
| 7 |
Flexural
Modulus of Elasticity @ 73 F |
psi |
D790 |
400000 |
450000 |
730000 |
1050000 |
445000 |
400000 |
400000 |
| 8 |
Shear
Strength @ 73 F |
psi |
D732 |
8000 |
9000 |
- |
- |
7600 |
6000 |
- |
| 9 |
Compressive
Strength, (% Deformation) @73 F |
psi |
D695 |
15000
(10) |
16000
(10) |
- |
- |
16000
(10) |
15000
(10) |
4500
(1) |
| 10 |
Compressive
Modulus of Elasticity @73 F |
psi |
D695 |
400000 |
450000 |
- |
- |
350000 |
315000 |
- |
| 11 |
Hardness,
Rockwell, Scale as noted @73 F |
- |
D785 |
M88
(R120) |
m89
(R122) |
M90
(R118) |
M80 |
M85
(R115) |
M85
(R116) |
M90
(R120) |
| 12 |
Hardness, Durometer,
Shore D @73 F |
- |
D2240 |
D85 |
D86 |
- |
- |
D83 |
D83 |
- |
| 13 |
Izod
Impact, (Notched) @73 F |
ft-lb/in
of notch |
D256
TypeA |
1.0 |
1.0 |
0.8 |
1.1 |
0.7 |
0.7 |
1.4 |
| 14 |
Coefficient
of Friction, (Dry vs. Steel) Dynamic |
- |
- |
0.25 |
0.25 |
0.34 |
- |
0.19 |
0.20 |
- |
| 15 |
Limiting
PV, (with 4 to 1 factor of safety applied) |
psi-ft/min |
- |
2700 |
2700 |
- |
- |
7500 |
7500 |
- |
| THERMAL |
16 |
Coefficient
of Linear Thermal Expansion @73 F |
in/in/F |
E-831
(TMA) |
5.4E-04 |
4.7E-05 |
4.5E-05 |
2.2E-05 |
5.0E-05 |
4.7E-05 |
6.8E-05 |
| 17 |
Heat
Deflection Temperature @ 264 psi |
F |
D648 |
220 |
250 |
316 |
322 |
244 |
250 |
257 |
| 18 |
Tg-Glass
transition temperature, (Amorphous) |
F |
D3418 |
- |
- |
- |
- |
- |
- |
- |
| 19 |
Melting
Point, (VS=Vicat Softening Temp.) |
F |
D3418 |
335 |
347 |
347 |
- |
347 |
347 |
347 |
| 20 |
Continuous
Service Temperature in Air, (Max.) |
F |
- |
180 |
180 |
185 |
- |
180 |
180 |
- |
| 21 |
Thermal
Conductivity |
BTU-in/hr-ft2-F |
- |
1.60 |
2.50 |
- |
- |
- |
- |
- |
| ELECTRICAL |
22 |
Dielectric
Strength, Short Term |
Volts/mil |
D149 |
420 |
450 |
490 |
- |
400 |
350 |
400 |
| 23 |
Volume
Resistivity |
ohm-cm |
D257 |
1.0E+17 |
1.0E+15 |
5.0E+14 |
- |
3.0E+16 |
1.0E+15 |
1.0E+15 |
| 24 |
Dielectric
Constant @ 10E6 Hz |
- |
D150 |
3.8 |
3.7 |
- |
- |
3.1 |
- |
3.5 |
| 25 |
Dissipation
Factor @ 10E6 Hz |
- |
D150 |
0.005 |
0.005 |
0.006 |
- |
0.010 |
- |
0.006 |
| 26 |
Flammability @
3.1 mm unless noted |
- |
UL94 |
HB |
HB |
HB |
- |
HB |
HB |
HB
(.78mm) |
| H2O |
27 |
Water
Absorbtion, Immersion, 24 Hrs |
%
by wt. |
D570(7) |
0.20 |
0.20 |
0.25 |
0.29 |
0.20 |
0.20 |
0.27 |
| 28 |
Water
Absorbtion, Saturation |
%
by wt. |
D570(7) |
0.90 |
0.90 |
1.00 |
- |
1.0 |
0.90 |
0.90 |
