鋼(gang)(gang)材(cai)應(ying)用廣泛、品種繁多,根(gen)據斷面(mian)形狀(zhuang)的(de)不(bu)同(tong),鋼(gang)(gang)材(cai)一(yi)般(ban)分(fen)為型材(cai)、板材(cai)、管材(cai)和(he)金屬制品四大類。鋼(gang)(gang)材(cai)是鋼(gang)(gang)錠、鋼(gang)(gang)坯(pi)(pi)或鋼(gang)(gang)材(cai)通過(guo)壓力(li)加(jia)(jia)工(gong)(gong)制成(cheng)的(de)一(yi)定形狀(zhuang)、尺寸和(he)性能的(de)材(cai)料。大部分(fen)鋼(gang)(gang)材(cai)加(jia)(jia)工(gong)(gong)都是通過(guo)壓力(li)加(jia)(jia)工(gong)(gong),使被加(jia)(jia)工(gong)(gong)的(de)鋼(gang)(gang)(坯(pi)(pi)、錠等)產生塑性變(bian)形。根(gen)據鋼(gang)(gang)材(cai)加(jia)(jia)工(gong)(gong)溫度不(bu)同(tong),可以分(fen)為冷加(jia)(jia)工(gong)(gong)和(he)熱加(jia)(jia)工(gong)(gong)兩種。