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9SiCr 是国家标准“合金工具钢技术条件”(GB1299-77)中、推荐作为刃具使用的主要钢种之一。这种低合金工具钢具有较好的淬透性和抗回火性,有碳化物分布均匀、过热敏感性小等优点,但这个钢种含有
9SiCr is a national standard “alloy tool steel technical conditions” (GB1299-77), recommended as one of the main steel used for cutting tools. This low alloy tool steel has good hardenability and tempering resistance, carbide distribution, thermal sensitivity and other advantages, but this steel contains