批發(fā)SUP10鋼材，SUP12彈簧鋼【直條】 批發(fā)SUP10鋼材，SUP12彈簧鋼【直條】==============.處理前硬度 143HBS，處理后硬度 131HBS。 中國GB/JB標(biāo)號:20日本JIS標(biāo)號:S20C/S22C美國AISI標(biāo)號:1020德國DIN鋼號標(biāo)號:CK22/C22德國DIN材料標(biāo)號:1．0402臺灣CNS標(biāo)號:S20C英國BS標(biāo)號:IC22法國AFNOR標(biāo)號:CC20意大利UNI標(biāo)號:C20/C21化學(xué)成分：C碳:0．18～0．23Si硅:0．15～0．35Mn錳:0．30～0．60S硫: 0．030P磷: 0．030Cr鉻: 0．25Ni鎳: 0．20Cu銅: 0．30 ==================================== 冷鐓壓用鋼：ML04AlML08AlML10AlML15AlML15ML20AlML20ML18MnML22MnML20CrML25ML30ML40ML45ML15MnML25MnML30MnML35MnML37CrML40CrML30CrMoML35CrMoML42CrMoML20BML28BML35BML15MnBML20MnBML35MnBML37CrBML20MnTiBML15MnVB 彈簧鋼:65Mn55SiMnVB55Si2Mn55Si2MnB60Si2Mn60Si2MnA60Si2CrA60Si2CrVA55SiCrA55CrMnA60CrMnA50CrVA60CrMnBA30W4Cr2VAC67SC75SC85SC100S38Si638Si746Si751Si756Si765Si771Si760SiMn551MnV754SiCr667SiCr556SiCr761SiCr752MnCrB3