Ihe siri ike nke 440 igwe anaghị agba nchara bụ 50c, 440 nchara nchara bụ nchara nchara, n'ezie, nchara ma na-eguzogide (na-eguzogide (na-eguzogide (corrosion na-eguzosi ike). Antirost na corrosion iguzogide igwe anaghị agba nchara bụ n'ihi guzobere chromium-bara ụba fim oxide. Nke a na-adịghị ike na nguzogide nke corrosion bụ nke na-adịghị mma .440 nchara nchara nwere chromium ihe, na obere ego, nikanium, na plastik dị elu, nke na-ejikarị ya eme ihe.
