Tam sim no, cov khoom siv nyob rau hauv kev lag luam mas xam nrog carbon steel, stainless hlau thiab tooj liab.
1. Carbon steel yog muab faib ua cov pa roj carbon tsawg, cov pa roj carbon nrab thiab cov pa roj carbon zoo li steel hlau
Cov pa carbon tsawg feem ntau hu ua A3 steel. 1008, 1015, 1018, 1022, thiab lwm yam. Qhov tseem ceeb yog siv rau 4.8 chav kawm bolts, 4-theem ceev, me me ntsia hlau thiab lwm yam khoom uas tsis muaj qhov nyuaj. (Drilling tes tsuas yog siv 1022 khoom)
Nruab nrab carbon feem ntau yog hu ua No. 35, No. 45 steel, 1035, CH38F, 1039, 40ACR, thiab cov zoo li. Feem ntau yog siv rau qib 8 qib, 8.8 qib bolts thiab cov khoom siv 8.8 qib qub.
Cov pa roj carbon tam sim no tsis yog siv hauv kev ua lag luam.
Cov hlau qaum hlau li 35/40 chrome molybdenum alloy steel
2. Cov kav hlau. Kev kawm theem 45, 50, 60, 70, 80
Lub ntsiab austenite (18% Cr / 8% Ni) muaj cov cua kub ua haujlwm zoo, kev txhim kho corrosion thiab zoo weldability. A1, A2, A4 martensite, 13% Cr muaj cov plab hnyuv corrosion tsis ua hauj lwm, siab zog thiab zoo coj ua haujlwm. C1, C2, C4 ferritic stainless hlau. 18% Cr muaj zoo dua forging khoom thiab corrosion kuj yog muaj zog tshaj martensite. Feem ntau muab faib ua SUS302, SUS304, SUS316 los ntawm theem
3. Tooj liab. Hom ntaub ntawv yog tooj dag, zinc-copper alloy. Lub khw tsuas yog siv H62, H65 thiab H68 tooj liab ua cov txheej txheem.