Hardness a 440 stainless steel plate yɛ 50C, 440 stainless dade mprɛte ne dade a ɛnyɛ mmerɛw sɛ rust, nokwarem no, fã a stainless dade, abien no nyinaa rust, ne resistance (corrosion resistance). Antirust ne corrosion resistance a ɛwɔ stainless steel mu no fi chromium-rich oxide film (passivation film) a ɛba wɔ ne soro no. Saa nonrust ne corrosion resistance yi yɛ relative.440 Stainless steel plate no kura chromium elements, na molybdenum, titanium, nickel ne elements afoforo kakraa bi, enti ɛyɛ den ne plastic no yɛ kɛse, wɔde di dwuma kɛse wɔ asetra mu.
