E nwere ise isi ụdịigwe anaghị agba nchara:austenitic, ferritic, martensitic, duplex, na mmiri ozuzo siri ike.
(1) Austenitic igwe anaghị agba nchara abụghị magnetik, na akara akara nchara onye nnọchi anya bụ 18% chromium agbakwunyere yana ụfọdụ nickel agbakwunyere iji bulie nguzogide corrosion.A na-eji akara akara nchara eme ihe n'ọtụtụ ebe.
(2) Ferrite bụ magnetik, na chromium element bụ isi ọdịnaya ya, yana oke nke 17%.Ihe a nwere ezigbo nguzogide oxidation.
(3) Martensitic igwe anaghị agba nchara bụkwa magnetik, ọdịnaya nke chromium na-abụkarị 13%, na o nwere oke carbon kwesịrị ekwesị, nke nwere ike ime ka obi sie ya ike site na imenyụ na iwe ọkụ.
(4) Duplex igwe anaghị agba nchara nwere ngwakọta ngwakọta nke ferrite na austenite, ọdịnaya nke chromium dị n'etiti 18% na 28%, na ọdịnaya nke nickel bụ n'etiti 4.5% na 8%.Ha na-eguzogide corrosion chloride.Nsonaazụ dị mma.
(5)Ọdịnaya a na-ahụkarị nke chromium na igwe anaghị agba nchara bụ 17, a na-agbakwunyekwa ụfọdụ nickel, ọla kọpa na niobium, nke nwere ike sie ike site na mmiri ozuzo na ịka nká.
Dabere na nhazi metallographic, enwere ike kewaa ya n'ime:
(1)Ferritic igwe anaghị agba nchara (400 usoro), chromium igwe anaghị agba nchara, tumadi na-anọchi anya Gr13, G17, Gr27-30;
(2)Austenitic igwe anaghị agba nchara (300 usoro), chromium-nickel igwe anaghị agba nchara, tumadi na-anọchi anya 304, 316, 321, wdg;
(3)Martensitic igwe anaghị agba nchara (200 usoro), chromium-manganese igwe anaghị agba nchara, elu carbon ọdịnaya, tumadi na-anọchi anya 1Gr13, wdg
Oge nzipu: Sep-28-2022