DATA SHEET FOR POLYMER BEARING MATERIALS
|
Property |
ASTM
Test |
Units |
PA |
AA |
NA |
FA |
QB |
QF |
MA |
|
USDA/FDA Approval |
--- |
--- |
direct |
direct |
incidental |
direct |
incidental |
incidental |
incidental |
|
Specific Gravity |
D-792 |
g/cm |
0.94 |
1.42 |
1.14 |
2.3 |
1.4 |
1.6 |
1.43 |
Impact Strength
(notched izod) |
D-256 |
ft-lb/in |
>25 |
1.4 |
0.9 |
2.5 |
1.1 |
0.8 |
0.8 |
|
Tensile Strength (yield) |
D-638 |
psi |
3,100 |
10,000 |
9,300 |
1,300 |
8,400 |
10,000 |
8,000 |
|
Elongation |
D-638 |
% |
350 |
30 |
50 |
15 |
6 |
3 |
6 |
|
Shear Strength |
D-732 |
psi |
3,500 |
9,500 |
10,000 |
--- |
2,727 |
--- |
11,200 |
|
Compressive Strength |
D-695 |
psi |
2,400
(10% deflection) |
5,200
(1% deflection) |
10,000
(1% deflection) |
2,000
(2.5% deflection) |
5.900 |
22,000 |
15,200 |
|
Hardness |
D-785 |
Rockwell |
R64
D67 |
R120
M94 |
R109
M57 |
R50
68A |
R128
M105 |
---
D84 |
---
M85 |
Coefficient of Linear
Thermal Expansion |
D-696 |
in/in/F |
7.2 x 10-5 |
5.0 x 10-5 |
5.5 x 10-5 |
3.3 x 10-5 |
3.4 x 10-5 |
2 x 10-5 |
2.7 x 10-5 |
|
Thermal Conductivity |
C-177 |
BTU/Hr
sq ft/F/in |
29 |
1.6 |
--- |
2.5 |
--- |
2.5 |
3.2 |
Coefficient of Friction
(against steel) |
--- |
static
dynamic |
.25
.14 |
.15
.20 |
.12-.21
.13-.16 |
---
0.04-0.2 |
---
0.15 |
.17
.08 |
---
0.12 |
Moisture Absorption
24 Hours
Saturation |
D-570 |
% |
<.01
<.01 |
.25
.90 |
1.2
5.3 |
<.35
<1.0 |
<.1
.23 |
.05
.10 |
.19
1.0 |
|
Max. Continuous Use Temp |
|
oF |
170o |
180o |
200o |
500o |
550o |
500o |
650o |
| |
|
Max. Intermittent Temp |
|
oF |
220o |
220o |
300o |
550o |
650o |
550o |
850o |
|
Minimum Use Temperature |
|
oF |
cryogenic
Poly-Round® |
-40o |
-40o |
-40o |
-40o
Poly-Round® |
cryogenic |
-40o |
|
Max. Recommended PV |
|
(lb) (ft)
(in) (min) |
<1,000 |
<2,000 |
6,000 |
6,000 |
50,000 |
60,000 |
110,000 |
|
