The hardness of 440 stainless steel plate is 50C, 440 stainless steel plate is the steel not easy to rust, in fact, part of stainless steel, both rust, and resistance (corrosion resistance). The antirust and corrosion resistance of stainless steel is due to the formation of chromium-rich oxide film (passivation film) on its surface. This nonrust and corrosion resistance are харьцангуй.440 зэвэрдэггүй ган хавтанг агуулдаг бөгөөд Lifelum, NASMENMES, LIFEMEMS нь харьцангуй өндөр өндөр, ингэснээр {7 {7 {7 {7. нь харьцангуй өндөртэй байдаг.
