35#鋼管化學成份

35#鋼管屬鋼材(cai)中的(de)一種材(cai)質。屬優質碳素(su)結構(gou)鋼。

大量的模具生產公司會用到，做模具鋼使(shi)用。

35#鋼管的(de)35指此(ci)種(zhong)材(cai)質中碳的(de)含量(liang)，大概在350左右。此(ci)種(zhong)材(cai)質，相對于其他的(de)優碳鋼，也(ye)較普遍(bian)。

化學成份

碳(tan) C ：0.32～0.39

硅(gui) Si：0.17～0.37

錳 Mn：0.50～0.80

硫 S ：≤0.035

磷 P ：≤0.035

鉻 Cr：≤0.25

鎳 Ni：≤0.30

銅 Cu：≤0.25

35#鋼管的(de)分(fen)類(lei)：無(wu)縫鋼(gang)(gang)管分(fen)熱軋和(he)冷軋（撥）無(wu)縫鋼(gang)(gang)管兩類(lei)。

熱軋鋼(gang)管分(fen)一(yi)般(ban)鋼(gang)管，低、中壓(ya)鍋爐鋼(gang)管，高壓(ya)鍋爐鋼(gang)管、合金(jin)鋼(gang)管、不銹鋼(gang)管、石(shi)油裂化管、地質鋼(gang)管和(he)其它(ta)鋼(gang)管等。

冷(leng)軋(ya)（撥）無縫鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)除(chu)分(fen)一般(ban)(ban)鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、低中壓鍋爐鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、高壓鍋爐鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、合(he)金鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、不(bu)銹(xiu)鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、石油(you)裂化管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、其它鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)外，還(huan)包括碳(tan)素薄(bo)壁(bi)(bi)鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、合(he)金薄(bo)壁(bi)(bi)鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、不(bu)銹(xiu)薄(bo)壁(bi)(bi)鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、異型(xing)鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)。熱軋(ya)無縫管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)外徑(jing)一般(ban)(ban)大于 32mm，壁(bi)(bi)厚(hou)2.5-75mm，冷(leng)軋(ya)無縫鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)處徑(jing)可以到(dao)6mm，壁(bi)(bi)厚(hou)可到(dao)0.25mm，薄(bo)壁(bi)(bi)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)外徑(jing)可到(dao)5mm，壁(bi)(bi)厚(hou)小(xiao)于0.25mm，冷(leng)軋(ya)比熱軋(ya)尺寸精(jing)度高。

力學性能

抗(kang)拉強度 σb (MPa)：≥530(54)

屈(qu)服(fu)強度 σs (MPa)：≥315(32)

伸長率(lv) δ5 (%)：≥20

斷面收(shou)縮率 ψ (%)：≥45

沖擊功 Akv (J)：≥55

沖擊(ji)韌(ren)性值(zhi) αkv (J/cm2)：≥69(7)

一般用(yong)(yong)(yong)鋼(gang)管(guan)(guan)(guan)：是用(yong)(yong)(yong)10、20、30、35、45等(deng)(deng)優(you)質碳(tan)結鋼(gang)16Mn、5MnV等(deng)(deng)低合(he)(he)金結構(gou)鋼(gang)或40Cr、30CrMnSi、45Mn2、40MnB等(deng)(deng)合(he)(he)金鋼(gang)熱(re)軋或冷軋制(zhi)成(cheng)的(de)。10、20等(deng)(deng)低碳(tan)鋼(gang)制(zhi)造的(de)無(wu)縫(feng)管(guan)(guan)(guan)主(zhu)要(yao)用(yong)(yong)(yong)于(yu)流體輸送管(guan)(guan)(guan)道。45、40Cr等(deng)(deng)中(zhong)碳(tan)鋼(gang)制(zhi)成(cheng)的(de)無(wu)縫(feng)管(guan)(guan)(guan)用(yong)(yong)(yong)來制(zhi)造機械零件，如汽車、拖拉機的(de)受力零件。一般用(yong)(yong)(yong)無(wu)縫(feng)鋼(gang)管(guan)(guan)(guan)要(yao)保(bao)證強度和壓扁試驗。熱(re)軋鋼(gang)管(guan)(guan)(guan)以熱(re)軋狀態或熱(re)處理(li)(li)狀態交貨；冷軋以熱(re)處理(li)(li)狀態交貨