C5101錫青銅上其Ms點不高(gao)(gao)，在發生馬氏(shi)體(ti)(ti)組織(zhi)(zhi)轉變(bian)時(shi)，鋼(gang)的(de)塑性已經(jing)很差，不易發生塑性變(bian)形(xing)(xing)，因(yin)此(ci)，就(jiu)保留了(le)熱(re)應(ying)力(li)作(zuo)用(yong)所造(zao)成的(de)變(bian)形(xing)(xing)征，模(mo)(mo)具型腔趨向收縮。但若(ruo)淬(cui)(cui)(cui)火(huo)(huo)(huo)(huo)溫度(du)(>850℃)，也可(ke)能因(yin)組織(zhi)(zhi)應(ying)力(li)起主導作(zuo)用(yong)，而使型腔趨向于(yu)(yu)。在用(yong)9Mn2V，9SiCr，CrWMn，GCr15鋼(gang)等(deng)低合金具鋼(gang)制作(zuo)模(mo)(mo)具時(shi)，其淬(cui)(cui)(cui)火(huo)(huo)(huo)(huo)變(bian)形(xing)(xing)規律與碳(tan)素具鋼(gang)相似，但變(bian)形(xing)(xing)量要碳(tan)素具鋼(gang)要小。對于(yu)(yu)一些高(gao)(gao)合金鋼(gang)，如Cr12MoV鋼(gang)等(deng)，由(you)于(yu)(yu)其碳(tan)及合金元素含量較高(gao)(gao)，Ms點較低，因(yin)而淬(cui)(cui)(cui)火(huo)(huo)(huo)(huo)后有較多的(de)殘余(yu)奧(ao)氏(shi)體(ti)(ti)，它對由(you)于(yu)(yu)馬氏(shi)體(ti)(ti)而致的(de)體(ti)(ti)積有抵消(xiao)作(zuo)用(yong)，因(yin)此(ci)，淬(cui)(cui)(cui)火(huo)(huo)(huo)(huo)后的(de)變(bian)形(xing)(xing)就(jiu)相當(dang)小，一般用(yong)空冷(leng)、風冷(leng)、硝(xiao)鹽浴(yu)淬(cui)(cui)(cui)火(huo)(huo)(huo)(huo)時(shi)，模(mo)(mo)具型腔趨于(yu)(yu)微(wei)量;若(ruo)淬(cui)(cui)(cui)火(huo)(huo)(huo)(huo)溫度(du)過高(gao)(gao)，則殘余(yu)奧(ao)氏(shi)體(ti)(ti)量，型腔也可(ke)能縮小

C5101錫青銅

化學成份：
銅Cu：余量
錫Sn：3.5～4.5
鉛Pb：≤0.02
磷P：0.20～0.40
鋁Al：≤0.002
鐵Fe：≤0.02
硅Si：≤0.002
銻Sb：≤0.002
鉍Bi：≤0.002
注：≤0.1(雜質)
標準：JIS
特性及適用范圍：
C5101錫青銅有高的力學性能、耐腐蝕性和高彈性,能很好地在冷態下承受壓力加工,也可在熱態下進行壓力加工。QSn4-0.3多用制作各種壓力計用管材料
力學性能：抗拉強度σb (MPa)：≥410
伸長率δ10 (％)：≥8
伸長率δ5 (％)：≥10
注：棒材的縱向室溫拉伸力學性能
試樣尺寸：直徑或對邊距離5～12
熱處理規范：
熱加工溫度(du)750～780℃;退(tui)火溫度(du)600～650℃。

C5101錫青銅青(qing)(qing)(qing)銅(tong)(tong)熱(re)(re)(re)處理1、青(qing)(qing)(qing)銅(tong)(tong)退(tui)火(huo)(huo)(huo)其(qi)(qi)目的(de)是(shi)消(xiao)除青(qing)(qing)(qing)銅(tong)(tong)在冷、熱(re)(re)(re)變形過(guo)程(cheng)中(zhong)(zhong)(zhong)的(de)應(ying)力，恢復塑性(xing)，對于(yu)鑄造青(qing)(qing)(qing)銅(tong)(tong)，為(wei)(wei)(wei)了消(xiao)除鑄造應(ying)力，減輕(qing)偏(pian)析(xi)、改善組織及(ji)提高(gao)鑄件的(de)機械性(xing)能(neng)(neng)，有(you)時(shi)(shi)需進(jin)(jin)行擴(kuo)(kuo)散退(tui)火(huo)(huo)(huo)。其(qi)(qi)工(gong)藝(yi)為(wei)(wei)(wei)600~700℃加熱(re)(re)(re)，保(bao)(bao)溫(wen)4~5h后(hou)，隨爐冷卻。鑄造錫(xi)青(qing)(qing)(qing)銅(tong)(tong)擴(kuo)(kuo)散退(tui)火(huo)(huo)(huo)后(hou)應(ying)該水冷，以防(fang)止脆性(xing)相析(xi)出。 2、青(qing)(qing)(qing)銅(tong)(tong)淬(cui)(cui)(cui)(cui)火(huo)(huo)(huo)及(ji)時(shi)(shi)效(xiao)(xiao)適(shi)宜淬(cui)(cui)(cui)(cui)火(huo)(huo)(huo)及(ji)時(shi)(shi)效(xiao)(xiao)強(qiang)化的(de)常用銅(tong)(tong)合(he)(he)金(jin)主(zhu)要(yao)(yao)是(shi)彼青(qing)(qing)(qing)銅(tong)(tong)。被青(qing)(qing)(qing)銅(tong)(tong)的(de)淬(cui)(cui)(cui)(cui)火(huo)(huo)(huo)加熱(re)(re)(re)溫(wen)度(du)一般為(wei)(wei)(wei)電阻爐課程(cheng)設計780~800，為(wei)(wei)(wei)防(fang)止氧(yang)化應(ying)在氨分(fen)解氣或(huo)氛氣中(zhong)(zhong)(zhong)進(jin)(jin)行加熱(re)(re)(re)。保(bao)(bao)溫(wen)時(shi)(shi)間由零件厚度(du)決(jue)定(ding)。加熱(re)(re)(re)后(hou)迅速淬(cui)(cui)(cui)(cui)入水中(zhong)(zhong)(zhong)，在空氣中(zhong)(zhong)(zhong)停留時(shi)(shi)間不(bu)超過(guo)6s，水溫(wen)不(bu)能(neng)(neng)高(gao)于(yu)40℃，且應(ying)保(bao)(bao)持清潔，隨后(hou)在310~340℃爐中(zhong)(zhong)(zhong)時(shi)(shi)效(xiao)(xiao)。彈(dan)性(xing)零件的(de)時(shi)(shi)效(xiao)(xiao)時(shi)(shi)間為(wei)(wei)(wei)2~3h;要(yao)(yao)求耐磨的(de)零件為(wei)(wei)(wei)1~2h。3、青(qing)(qing)(qing)銅(tong)(tong)淬(cui)(cui)(cui)(cui)火(huo)(huo)(huo)及(ji)回(hui)火(huo)(huo)(huo)進(jin)(jin)行淬(cui)(cui)(cui)(cui)火(huo)(huo)(huo)、回(hui)火(huo)(huo)(huo)強(qiang)化的(de)銅(tong)(tong)合(he)(he)金(jin)主(zhu)要(yao)(yao)是(shi)含(han)鋁(lv)量大于(yu)10%的(de)高(gao)鋁(lv)青(qing)(qing)(qing)銅(tong)(tong)，含(han)有(you)鐵、錳等元素的(de)復雜鋁(lv)青(qing)(qing)(qing)銅(tong)(tong)淬(cui)(cui)(cui)(cui)火(huo)(huo)(huo)強(qiang)化效(xiao)(xiao)果尤為(wei)(wei)(wei)顯著，鋁(lv)青(qing)(qing)(qing)銅(tong)(tong)的(de)淬(cui)(cui)(cui)(cui)火(huo)(huo)(huo)工(gong)藝(yi)一般為(wei)(wei)(wei)850~900℃加熱(re)(re)(re)后(hou)水冷。回(hui)火(huo)(huo)(huo)溫(wen)度(du)則視性(xing)能(neng)(neng)要(yao)(yao)求而定(ding)。