Material Comparison
Product Info
Product Name
Brand Name
Usages
Properties
Certificates
POM 988P DUPONT USA
Delrin®
Fitness equipment,Automotive components
High temperature resistan,wear resistant
UL
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Plastic Datasheets
| thermal performance | Test Condition | Test Method | DUPONT USA/988P |
|---|---|---|---|
| Linear coefficient of thermal expansion | 104-160℃ | ASTM D-696 | 14.9 10-5m/m |
| 60-104℃ | ASTM D-696 | 13.7 10-5m/m | |
| spontaneous combustion | UL 94 | HB | |
| melting temperature | ASTM D-2133 | 175 | |
| Linear coefficient of thermal expansion | 29-60℃ | ASTM D-696 | 12.2 10-5m/m |
| Heat Deflection Temperature | 1.8MPa，HDT | ASTM D-648 | 136 |
| Linear coefficient of thermal expansion | -40-29 | ASTM D-696 | 10.4 10-5m/m |
| thermal conductivity | 0.37 w/mk |
| Basic performance | Test Condition | Test Method | DUPONT USA/988P |
|---|---|---|---|
| Water absorption rate | 24小时浸渍 | ASTM D-570 | 0.25 % |
| 50%相对湿度 | ASTM D-570 | 0.22 % | |
| 浸渍平衡点 | ASTM D-570 | 0.90 % |
| Mechanical properties | Test Condition | Test Method | DUPONT USA/988P |
|---|---|---|---|
| shearing strength | 23℃ | ASTM D-732 | 66 Mpa |
| flexural modulus | 23℃ | ASTM D-790 | 3220 Mpa |
| compression stress | 23℃，10%变形 | ASTM D-695 | 121 Mpa |
| flexural modulus | -55℃ | ASTM D-790 | 4730 Mpa |
| Impact strength of cantilever beam gap | 无缺口23℃ | ASTM D-256 | 1620 J/m |
| Elongation at break | -55℃ | ASTM D-638 | 10 % |
| tensile strength | 122℃ | ASTM D-638 | 26 Mpa |
| 100℃ | ASTM D-638 | 36 Mpa | |
| Heat Deflection Temperature | 140kg/cm2,50℃ | ASTM D-621 | 0.5 % |
| Elongation at break | 23℃ | ASTM D-638 | 25 % |
| flexural modulus | 70℃ | ASTM D-790 | 1720 Mpa |
| 23℃ | ASTM D-638 | 3640 Mpa | |
| tensile strength | 70℃ | ASTM D-638 | 48 Mpa |
| Flexural fatigue endurance limit | 50%RH，23℃，106周期 | ASTM D-671 | 32 Mpa |
| Hardness (Rockwell R) | ASTM D-785 | 120 | |
| tensile strength | 23℃ | ASTM D-638 | 69 Mpa |
| Bending deformation | 23℃ | ASTM D-790 | 97 Mpa |
| Elongation at break | 100℃ | ASTM D-638 | >260 % |
| 122℃ | ASTM D-638 | >260 % | |
| tensile strength | -55℃ | ASTM D-638 | 101 Mpa |
| Hardness (Rockwell M) | ASTM D-785 | 94 | |
| Elongation at break | 70℃ | ASTM D-638 | 180 % |
| Impact strength of cantilever beam gap | 23℃ | ASTM D-1822 | 250 kJ/m² |
| 23℃ | ASTM D-256 | 71 J/m | |
| compression stress | 23℃，1%变形 | ASTM D-695 | 35 Mpa |
| Impact strength of cantilever beam gap | 缺口-40℃ | ASTM D-256 | 55 J/m |
| flexural modulus | 100℃ | ASTM D-790 | 1030 Mpa |
| 122℃ | ASTM D-790 | 755 Mpa |
| Electrical performance | Test Condition | Test Method | DUPONT USA/988P |
|---|---|---|---|
| dielectric constant | 50%RH，23℃，102-106Hz | ASTM D-150 | 3.7 ohm-cm |
| dielectric strength | 2.3mm | ASTM D-149 | 19.7 KV/mm |
| dielectric constant | 50%RH，23℃，106Hz | ASTM D-150 | 0.005 |
| arc resistance | 3.1mm | ASTM D-495 | 220 sec |
| Volume resistivity | 23℃，0.2%含水量 | ASTM D-257 | ≥14.9 ohm-cm |
| Physical properties | Test Condition | Test Method | DUPONT USA/988P |
|---|---|---|---|
| shrinkage rate | 1.8-2.0 % |
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