ASTM D471 Industry Standard for Rubber and Similar Materials

ASTM D471 Industry Standard for Rubber and Similar Materials
This standard is applicable to testing the performance changes of vulcanized rubber, rubber layers of coated fabrics, and finished rubber products (such as seals, hoses) in liquids. It is not applicable to porous rubber, sponge rubber, or compressed sheet fillers. Performance indicators and qualified thresholds: Weight change: Usually required to be ≤±5% (adjusted according to material type). Hardness change: Shore hardness change ≤±5 Shore A. Tensile strength retention rate: ≥70% (automotive grade requires ≥80%). 阅读详细内容…