*é©Pbbs.3c3t.commO·äHñлÎ
答:Ⅰ级:屈服235MPa,抗拉370MPa伸长率≥25%*é©Pbbs.3c3t.commO·äHñлÎ
Ⅱ级:屈服335MPa,抗拉510MPa伸长率≥16%*é©Pbbs.3c3t.commO·äHñлÎ*é©Pbbs.3c3t.commO·äHñлÎ
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*é©Pbbs.3c3t.commO·äHñлÎ[此贴子已经被作者于2007-1-24 11:24:56编辑过]*é©Pbbs.3c3t.commO·äHñлÎ
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