性能测试 每批次的Nuts N’ Bolts 423都通过了MIL-R-46163B (Type II Grade N)的要求,以及ASTM D5363 (AN0321... ASTM A453 Gr.660A是什么材料 ASTM A453 Grade 660在650℃以下具有高的屈服强度和持久、蠕变强度... (%):C <=0.08Si <=1Mn <=2P <=0.035S... ASTM A453 GRADE 660 CLASS B是...