碳(tan)(tan)素(su)工(gong)具(ju)鋼（tool steel）的常用(yong)(yong)鋼號(hao)為T7～T13，T表(biao)示碳(tan)(tan)素(su)工(gong)具(ju)鋼，后面(mian)的數字表(biao)示平(ping)均含碳(tan)(tan)量的千分之幾(ji)。T7、T8常用(yong)(yong)于制(zhi)造(zao)風鎬、沖壓(ya)模具(ju)沖頭，T10、T11用(yong)(yong)于制(zhi)造(zao)絞刀等。碳(tan)(tan)素(su)工(gong)具(ju)鋼標準(zhun)見GB／T 1298《碳(tan)(tan)素(su)工(gong)具(ju)鋼》。