易切削結構鋼:SUM22L
執行標準:JIS G4804-1999●化學成份:
碳 C : 0.13
硅 Si: 0.15
錳 Mn:0.70∼1.00
硫 S :0.24∼0.33
磷 P :0.07∼0.12
鉛 Pb:0.10∼0.35
力學性能:
抗拉強度 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
交貨狀態:以熱軋或冷拉狀態交貨,交貨狀態應在合同中注明
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