پرفروش aisi 420 با عرضه کافی
پرفروش aisi 420 با عرضه کافی Wear and corrosion properties of AISI 420 martensitic stainless steel The material used in this study was AISI 420 stainless steel with chemical composition shown in Table 1.The steel bar treated by isothermal annealing at 760 °C is a stable structure of ferrite and carbide (in the Fig. 2 a).