请教一下,SK5材料的化学特性和物理特性.再问下,SK5材料可以冲压加工吗...答:中国GB T8/T8Mn/T9;俄罗斯ГОСТ У8/У8Г/У9;美国ASTM W1A-8/W1-8/W1A-8.5,W1-0.9C/W2-8.5,UNS T72301;英国BS 060A78,060A81/060A80/BW1A;法国NF C80E2U,Y180/Y75/C90E2U/Y190;德国DIN C80W1,W80W2,C85W2/C85W,080W2,C75W3;日本JIS SK5,SK6/SK5/SK4,SK5...