一般來說，純金屬的鍛造性比合金好；固溶體的鍛造性較化合物好；低碳鋼、低合金鋼的鍛造性比高碳鋼、高合金鋼好。細晶粒的塑性較粗晶粒的好，但變形抗力較大。

 在(zai)一定的(de)變(bian)(bian)(bian)(bian)形(xing)溫度(du)范圍內，溫度(du)升高，會(hui)使變(bian)(bian)(bian)(bian)形(xing)抗(kang)力降低和塑(su)性(xing)提高，從而改善和提高了鍛造(zao)性(xing)。同(tong)(tong)(tong)一金屬(shu)(shu)采用(yong)不(bu)同(tong)(tong)(tong)的(de)變(bian)(bian)(bian)(bian)形(xing)方(fang)(fang)法，產(chan)生的(de)應(ying)力狀態不(bu)同(tong)(tong)(tong)，因而會(hui)表(biao)現(xian)出不(bu)同(tong)(tong)(tong)的(de)鍛造(zao)性(xing)。例如，金屬(shu)(shu)在(zai)擠壓時(shi)三向(xiang)受(shou)(shou)壓，表(biao)現(xian)出較(jiao)高的(de)塑(su)性(xing)和較(jiao)大的(de)變(bian)(bian)(bian)(bian)形(xing)抗(kang)力；拉拔時(shi)兩向(xiang)受(shou)(shou)壓、一向(xiang)受(shou)(shou)拉，表(biao)現(xian)出較(jiao)好的(de)塑(su)性(xing)和較(jiao)小的(de)變(bian)(bian)(bian)(bian)形(xing)抗(kang)力。因此，塑(su)性(xing)差的(de)材料采用(yong)擠壓的(de)變(bian)(bian)(bian)(bian)形(xing)方(fang)(fang)法較(jiao)為有(you)利(li)，而塑(su)性(xing)好的(de)材料采用(yong)拉拔的(de)變(bian)(bian)(bian)(bian)形(xing)方(fang)(fang)法較(jiao)有(you)利(li)。