070M55 steel,070M55 steel materials,BS 070M55 steel plate properties

070M55 steel
Steel Category:Steel for Boilers and Pressure Vessels
Steel standard:BS 970
Steel grade:BS 970 070M55
Dimension: Thickness 5-300mm, Width 1500-3500mm, Length 3000-12000mm
Application: Quenched and subsequently tempered steel for less exacting springs, shafts, bushings, crankshafts, etc

070M55 steel chemical composition

Grade	C(%)min-max	Si(%)min-max	Mn(%)min-max	P(%)max	S(%)max	Cr(%)min-max
070M55	0.52-0.60	0.15-0.35	0.60-0.90	0.025	0.025	0.20-0.40

070M55 steel mechanical property

Grade	Condition	Yield Strength R°(Mpa)	Tensile Strength Rm (Mpa)	Elon- gation A5(%)	Hardness HRC	Quenching Temperature (℃)	Benda- bility	Nominal Thickness,t 1.95mm≤t≤10.0mm
								Rolled	Annealed
070M55	Rolled Annealed Water-quenched Oil quenched	500 350	825 550 2510 2120	18 30	61 57	805 845	Min.reco-mmended Bending radius (≤90°)	3.0 ×t	1.0×t

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