一、材質(zhì)成分對(duì)比化學(xué)成分碳(C):0.37%-0.44%鉻(Cr):0.80%-1.10%錳(Mn):0.50%-0.80%硅(Si):0.17%-0.37%含鉻合金,屬中碳合金結(jié)構(gòu)鋼無(wú)縫