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Alloy steel /Round bar(SAE 4340/40CrNiMo)
1)Delivery condition:Hor-rolled,black surface,and Annealed,Hardness: ≤220HB
2)Chemical composition:C=0.39~0.44,Si=0.17~0.35,Mn=0.65~0.75,Cr=0.74~0.80,
Mo=0.16~0.20, Ni=1.25~1.65,P≤0.018,S=0.03,Cu=0.2
3)Specification:Thickness:30/35/40..350mm,Length:2500~4000mm,or as customers’ request.
4) Payment terms: 30% deposit, balance against L/C at sight or T/T.
4340 STEEL ROUND BAR
