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JP63128152 含硅、锰、铬、钨、氮、钼和(或)钒和铁的抗挠和耐疲劳的弹簧钢 Sagging-and fatigue-resistant spring steel——includes Si, Mn, Cr,W, N, Mo and/or V and Fe KOBE STEELOKK 1986.11.18