Grade：42CrMo4, 4140, 42CrMo

Deliver Condition：Hot rolling, Normalization Rolling

Size Range：OD 70MM-610MM , Thickness 6MM-35MM

Tolerance： According to EN 10210-2:2006

Length：As request

Certificate: FPC

Grade	Chemical Compostion ％
	Standard	C	Si	Mn	Cr	Mo	P	s
		Max	Max	Max	Max	Max	Max	Max
42CrMo4	EN10083	0.38-0.45	0.4	0.6-0.9	0.9-1.2	0.15-0.3	0.025	0.035
4140	ASTM A29/A29M-04	0.33-0.48	0.15-0.35	0.75-1.0	0.8-1.1	0.15-0.25	0.03	0.03
42CrMo	GB/T 3077	0.38-0.45	0.17-0.37	0.4-0.7	0.09-1.2	0.15-0.25	0.035	0.035

Mechanical Properties:

Grade		Mechanical Properties
	Standard	Yield Strength	Tensile Strength	elongation	Impact Value	Hardness	αkv
		Min Mpa	Min Mpa	Min％︱	min J	HB	min
42CrMo4	EN10083	930	1080	26	≥63	≤217	78
4140	ASTM A29/A29M-04	610	795	22	--	241	157
42CrMo	GB/T 3077	275	410-560	≥12	≥63	≤217	78

Application: The alloy seamless pipe is a kind of seamless steel pipe, and its performance is much higher than that of the ordinary seamless steel pipe. Because the steel pipe contains more Cr, its high temperature resistance, low temperature resistance and corrosion resistance are better than other seamless steel pipes. So the alloy tube is widely used in petroleum, chemical, electric power, boiler and other industries. 4140 thick-walled seamless pipe is ultra-high strength steel with high strength and toughness, good hardenability,no obvious temper brittleness, high fatigue limit and resistance to multiple impacts after quenching and tempering, low temperature Good impact toughness. The steel is suitable for the manufacture of large and medium-sized plastic molds requiring a certain strength and toughness. 4140 thick-walled seamless pipe characteristics and scope of application: high strength, high hardenability, good toughness, small deformation during quenching, high creep strength and long-lasting strength at high temperatures. Forgings requiring higher strength and larger quenching section than 35CrMo steel, such as large gears for locomotive traction, supercharger transmission gears, rear axles, extremely loaded connecting rods and spring clips, can also be used Oil deep well drill pipe joints and fishing tools below 2000m, and can be used for molds of bending machines, etc.