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| mechanical properties | Test Condition | Test Method | ZHENJIANG CHIMEI/PA-757K BK |
|---|---|---|---|
| elongation | ASTM D-790 | 20 % | |
| Rockwell hardness | ASTM D-785 | 116 R | |
| Impact strength of cantilever beam gap | 1/8" | ASTM D-256 | 20 kg.cm/cm |
| bending strength | ASTM D-790 | 790×10 kg/cm | |
| Impact strength of cantilever beam gap | 1/4〃 | ASTM D-256 | 18 kg.cm/cm |
| Bending modulus | ASTM D-790 | 2.7 kg/cm | |
| tensile strength | ASTM D-638 | 480 kg/cm | |
| thermal performance | Test Condition | Test Method | ZHENJIANG CHIMEI/PA-757K BK |
| Hot deformation temperature | Unannealed | ASTM D-648 | 88(190) ℃（℉） |
| Vicat softening temperature | ASTM D-1525 | 105(221) ℃（℉） | |
| Hot deformation temperature | Annealed | ASTM D-648 | 99(210) ℃（℉） |
| Physical properties | Test Condition | Test Method | ZHENJIANG CHIMEI/PA-757K BK |
| density | ASTM D-792 | 1.05 23/23℃ | |
| melt mass-flow rate | 200℃ 10kg | ISO 1133 | 22 g/10min |
| Combustibility | File NO.E196075 | 1/16"HB | |
| melt mass-flow rate | 200℃ 5kg | ASTM D-1238 | 1.8 g/10min |