070M50 steel,070M50 steel materials,BS 070M50 steel plate properties

070M50 steel
Steel Category:Steel for Boilers and Pressure Vessels
Steel standard:BS 970
Steel grade:BS 970 070M50
Dimension: Thickness 5-300mm, Width 1500-3500mm, Length 3000-12000mm
Application: Quenched and subsequently tempered steel for screws, forgings, wheel tyres, shafts, sickles, axes, knives, wood working drills, hammers, etc

070M50 steel chemical composition

Chemical elements	C	Si max.	Mn	P max.	S max.	Cr max.	Mo max.	Ni max.	Cr+Mo+Ni max.
%, by mass	0,47-0,55	0,40	0,60-0,90	0,045	0,045	0,40	0,10	0,40	0,63 - -
Permissible deviation	±0,02	+ 0,03	±0,04	+ 0,005	+0,005	+0,05	+0,03	+0,05	0,63 - -

070M50 steel mechanical property

Thickness of ruling section tR
Diameter in mm		tR≤ 100mm	100 < tR≤250mm	250 < tR≤500mm	500 < tR≤1000mm
Remin (N/mm2)		320	290	-	-
Rmmin (N/mm2)		610	590	-	-
A % min.	l-longitudinal	14	14	-	-
A % min.	tr -transverse	-	-	-	-
KV min * (J)	l-longitudinal	-	-	-	-
KV min * (J)	tr -transverse	-	-	-	-

1N/mm2=1MPa Heat treatment conditions

Quenching Temperature,0C	Cooling medium	Tempering Temperature,0C	Normalizing Temperature,0C
810 to 850	Oil or water	550 to 660	830 to 870

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