AR400, yog cov pa roj carbon siab nrog cov nominal hardness ntawm 400 thiab qhov tsawg kawg nkaus Brinell hardness ntawm 360 txog 440. Wear-resistant steel yog tsim los ntawm quenching thiab tempering forged steel daim hlau.
quenching tshwm sim los ntawm cua sov cov hlau mus rau qhov kub ntawm 1,500 thiab 1,650 degree F thiab tom qab ntawd maj mam txias nrog dej. Thaum lub sij hawm tempering, cov hlau tau rov ua dua hauv qab qhov ntsuas kub tseem ceeb, ntawm 300 txog 700 degree F, thiab tom qab ntawd txias rau hauv chav sov. Cov txheej txheem quenching tsim cov qauv siv lead ua nyob rau hauv cov hlau, ua rau nws cov hardness, thaum tempering tsub kom cov hlau tag nrho durability. Cov txheej txheem quenching thiab tempering hloov cov qauv nplej los txhim kho toughness thiab formability, uas ua rau tag nrho cov khoom hardened.
