鋼(gang)(gang)(gang)材(cai)(cai)(cai)(cai)應用廣泛、品(pin)(pin)種繁多，根據斷(duan)面形(xing)狀(zhuang)的不同，鋼(gang)(gang)(gang)材(cai)(cai)(cai)(cai)一(yi)般分(fen)為型材(cai)(cai)(cai)(cai)、板材(cai)(cai)(cai)(cai)、管(guan)材(cai)(cai)(cai)(cai)和(he)(he)(he)金屬制品(pin)(pin)四大類(lei)。鋼(gang)(gang)(gang)材(cai)(cai)(cai)(cai)是鋼(gang)(gang)(gang)錠(ding)、鋼(gang)(gang)(gang)坯(pi)或鋼(gang)(gang)(gang)材(cai)(cai)(cai)(cai)通過(guo)壓(ya)力(li)(li)加(jia)工(gong)(gong)(gong)制成的一(yi)定形(xing)狀(zhuang)、尺寸和(he)(he)(he)性(xing)能的材(cai)(cai)(cai)(cai)料。大部分(fen)鋼(gang)(gang)(gang)材(cai)(cai)(cai)(cai)加(jia)工(gong)(gong)(gong)都是通過(guo)壓(ya)力(li)(li)加(jia)工(gong)(gong)(gong)，使被加(jia)工(gong)(gong)(gong)的鋼(gang)(gang)(gang)(坯(pi)、錠(ding)等(deng))產(chan)生塑性(xing)變(bian)形(xing)。根據鋼(gang)(gang)(gang)材(cai)(cai)(cai)(cai)加(jia)工(gong)(gong)(gong)溫度不同，可以(yi)分(fen)為冷加(jia)工(gong)(gong)(gong)和(he)(he)(he)熱加(jia)工(gong)(gong)(gong)兩種。
