1. Tsawg-carbon: Vim yog qhov yuav tsum tau ua ntawm toughness, vuam, thiab kev ua haujlwm txias, cov ntsiab lus carbon tsis tshaj 0.20%.
2. Ntxiv cov khoom alloy raws li manganese.
3. Ntxiv cov khoom ntxiv xws li titanium, titanium: Ib qho me me ntawm titanium, titanium, lossis tadpoles ua cov carbides zoo lossis carbon nitride hauv cov hlau, uas yog qhov tsim nyog kom tau txais cov nplej me me ferrite thiab txhim kho lub zog thiab tawv ntawm cov hlau. Tsis tas li ntawd, ntxiv cov tooj liab me me (tsawg dua lossis sib npaug ntawm 0.4%) thiab phosphorus (txog 0.1%) tuaj yeem txhim kho corrosion kuj. Ntxiv ib qho me me ntawm cov ntsiab lus tsis tshua muaj hauv ntiaj teb rau desulfurize, tshem tawm cov roj, purify steel, thiab txhim kho toughness thiab txheej txheem kev ua tau zoo.
