SA387Gr12 siab lub nkoj steel phaj
cov khoom siv thev naus laus zis
SA387Gr12 siab lub nkoj steel phaj nthuav dav qhia
SA387Gr12 siab hlab ntsha steel phaj yog ib hom chromium-molybdenum alloy steel phaj, uas yog siv rau kev tsim cov hlab ntsha siab thiab boilers nyob rau hauv kub thiab siab.
Cov yam ntxwv ntawm SA387Gr12 siab nkoj steel phaj yog raws li nram no
1. zoo kub siab zog thiab oxidation kuj; 2. zoo weldability thiab tsawg kub toughness;
3. zoo hnav tsis kam thiab kub tsis kam ua haujlwm qaug zog;
4. haum rau kev tsim cov hlab ntsha siab thiab boilers nyob rau hauv qhov kub thiab txias ib puag ncig.
Cov tsis tseem ceeb ntawm SA387Gr12 siab nkoj steel phaj yog raws li nram no
Cov tshuaj muaj pes tsawg leeg: carbon (C) Tsawg dua lossis sib npaug rau {{{0}}}.15, silicon (Si) Tsawg dua lossis sib npaug rau 0.50, manganese (Mn) 0. 12}}.50, molybdenum (Mo) 0.45-0.60;
Tensile zog
Tensile zog: 450-585 MPa; 3. -585 MPa; Tawm zog: 240 MPa; 4. Elongation: 19%.
Corrosion: vim muaj cov xov xwm corrosive xws li kua qaub, alkali thiab ntsev hauv qhov chaw ua haujlwm, corrosion kuj tuaj yeem tshwm sim ntawm lub nkoj, ua rau xeb, corrosion thiab loosening ntawm steel phaj nto.
Raws li lub nkoj tau raug kev thauj mus los hauv lub sijhawm ua haujlwm, kev qaug zog tawg thiab deformation tuaj yeem tshwm sim ntawm ob sab hauv thiab sab nraud steel daim hlau ntawm lub nkoj.
