1Cr17,1Cr17不銹鋼,1Cr17不銹鋼管,1Cr17不銹鋼板,1Cr17不銹鋼棒,1Cr17不銹鐵,不銹鋼板1Cr17,1Cr17鋼管,1Cr17圓鋼,不銹鋼1Cr17,戴南不銹鋼1Cr17
1Cr17熱處理,
鐵素體不銹鋼
在使用狀態(tài)下以鐵素體組織為主的不銹鋼。含鉻量在11%~30%,具有體心立方晶體結(jié)構(gòu)。這類鋼一般不含鎳,有時(shí)還含有少量的Mo、Ti、Nb等到元素,這類鋼具導(dǎo)熱系數(shù)大,膨脹系數(shù)小、抗氧化性好、抗應(yīng)力腐蝕優(yōu)良等特點(diǎn),多用于制造耐大氣、水蒸氣、水及氧化性酸腐蝕的零部件。這類鋼存在塑性差、焊后塑性和耐蝕性明顯降低等缺點(diǎn),因而限制了它的應(yīng)用。爐外精煉技術(shù)(AOD或VOD)的應(yīng)用可使碳、氮等間隙元素大大降低,因此使這類鋼獲得廣泛應(yīng)用。
馬氏體、鐵素體、奧氏體、雙相不銹鋼的化學(xué)成分
鋼號(hào) C Si Mn Cr Ni Mo Ti
2Cr18Ni9 0.12-0.22 ≤1.0 ≤2.0 17-19 8-11 - -
1Cr18Ni9(304) ≤0.015 ≤1.0 ≤2.0 17-19 8-10 - -
0Cr18Ni9(304L) ≤0.08 ≤1.0 ≤2.0 17-19 8-11 - -
1Cr18Ni9Ti ≤0.12 ≤1.0 ≤2.0 17-19 8-11 - 5×(C-0.02~0.8)
0Cr18Ni9Ti(321) ≤0.08 ≤1.0 ≤2.0 17-19 8-11 - 5×C%~0.7
0Cr18Ni11Nb(347) ≤0.08 ≤1.0 ≤2.0 17-19 9-12 - -
0Cr17Ni12Mo2(316) ≤0.08 ≤1.0 ≤2.0 16-19 11-15 1.8-2.5 5×C%~0.7
00Cr26NiMo2Ti(雙相)≤0.03 0.4-0.8 ≤1.5 25-27 6.5-7.5 1.5-2.5 0.3-0.5
1Cr13(410) ≤0.15 ≤1.0 ≤1.0 11.5-13.5 - - -
2Cr13(420) 0.16-0.25 ≤1.0 ≤1.0 12-14 - - -
3Cr13 0.26-0.35 ≤1.0 ≤1.0 12-14 - - -
4Cr13 0.36-0.45 ≤1.0 ≤1.0 12-14 - - -
1Cr17(430) ≤0.12 ≤0.8 ≤0.8 16-18 - - -
1Cr17Ti ≤0.12 ≤0.8 ≤0.8 16-18 - - 5×C%~0.8
0Cr17Ti ≤0.08 ≤0.8 ≤0.8 16-18 - - 5×C%~0.8
1Cr25Ti ≤0.12 ≤1.0 ≤0.8 0-27 - - 5×C%~0.8