Khoom nta: 440 / 440C stainless hlau pob muaj cov hardness siab, zoo xeb kuj, hnav tsis kam, muaj hlau nplaum. Yuav oily los yog ntim khoom ntim.
Cov chaw thov:440 pob hlau stainless yog feem ntau siv rau hauv kev lag luam uas muaj qhov siab xav tau, kev ua siab tawv, thiab kev tiv thaiv xeb, xws li kev kub ceev thiab tsis tshua muaj suab nrov stainless hlau bearings, lub cev muaj zog, aerospace qhov chaw, cov twj paj nruag, qhov chaw pib, qhov qub, thiab lwm yam. ;