Y12Pb易切削鋼:
●化學(xué)成份:
碳 C :0.08~0.16
硅 Si:≤0.15
錳 Mn:0.70~1.10
硫 S :0.15~0.25
磷 P :0.05~0.10
鉛 Pb:0.15~0.35
●力學(xué)性能:
抗拉強(qiáng)度 σb (MPa):(熱軋)390~540; (冷拉)鋼材厚度或直徑 8~20時:530~755; >20~30時:510~735; >30時:490~685
伸長率 δ5 (%):(熱軋)≥22;(冷軋)≥7.0
斷面收縮率 ψ (%):(熱軋)≥36
硬度 :(熱軋)≤170HB;(冷拉)152~217HB
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