Product Details

Product Description

42 crmo4 used in the manufacture of requirements higher than 35 crmo steel strength and conditioning section more large forgings, such as locomotive traction with the big gear, supercharger drive gear, rear axle, the load of connecting rod and a spring clip, 42 crmo4 can also be used to under 2000 m deep well of oil drill pipe joint and the fishing tool and so on

Executive standard :EN 10083/3-2006.

Characteristics: 42CrMo4 strength, high hardenability, good toughness, small deformation during quenching, high creep strength and persistent strength at high temperature.

Material	20# ,45# ,Q345B,Q345D,25Mn,27sIMn,42CrMo4, E355/st52, SAE1026...
Standard	DIN2391, EN10305, ASTM A519, GB/T 8713, GB/T3669...
Specification	OD ID
Specification	30-350mm 2-30mm
Straightness	1/1000 1/500
Surface	polished or coating
Delivery time	25-45days
Packing	Bundled with knitted plastic bag, wooden cases or according to customers' request.
application	Fluid and gas transport,decoration, construction,medical equipment, aviation, boiler heat-exchanger and other fields

Detailed Images

Steel Grade	C	Si	Mn	P	S	Cr	Ni	Cu	Al
20#	0.17-0.24	0.17-0.37	0.35-0.65	0.035	0035	0.250	0.250	/	/
45#	0.42-0.50	0.17-0.37	0.50-0.80	0.035	0.035	0.250	0.300	/	/
Q345B	≤0.2	≤0.5	1.00-1.60	0.030	0.030	0.300	0.250	0.08	/
Q345D	≤0.2	≤0.5	1.00-1.60	0.030	0.030	0.250	0.250	0.150	0.015
25Mn	0.22-0.29	0.17-0.37	0.70-1.00	0.035	0.035	/	/	/	/
27SiMn	0.24-0.32	1.10-1.40	1.10-1.40	0.035	0.035	0.300	0.300	/	/
E355	≤0.22	≤0.55	≤1.6	0.025	0.025	0.250	0.250	/	/
SAE1026	0.22-0.28	0.15-0.35	0.60-0.90	0.040	0.050	/	/	/	/

steel grade	Rm Mpa BK+S	ReH Mpa BK+S	Elongation BK+S	Rm Mpa(BK)	Elongation(BK)
20#	≥520	≥375	≥15	≥550	≥8
45#	≥600	≥520	≥10	≥640	≥5
16Mn	≥600	≥520	≥14	≥640	≥5
25Mn	≥600	≥510	≥15	≥640	≥5
27SiMn	≥760	≥610	≥10	≥800	≥5
ST45	≥520	≥375	≥15	≥550	≥5
E355	≥600	≥520	≥14	≥640	≥5
SAE1026	≥600	≥510	≥15	≥640	≥5

seamless pipe normal size

*5570**	*100114**	*150180**	*200225**
*6070**	*100115**	*155180**	*200230**
*6075**	*100120**	*160175**	*200245**
*6078**	*100125**	*160180**	*200250**
*6373**	*105125**	*160185**	*220250**
*6375**	*110125**	*160190**	*220270**
*6376**	*110130**	*160195**	*225250**
*6378**	*115130**	*165190**	*240273**
*6580**	*115135**	*165205**	*250290**
*7080**	*120140**	*170200**	*250300**
*7082**	*125140**	*180200**	*260300**
*7085**	*125145**	*180205**	*280323**
*7090**	*125150**	*180210**	*280355**
*7590**	*130150**	*180215**	*300350**
*8092**	*130155**	*180220**	*200213**
*8095**	*130160**	*185205**	*200216**
*80100**	*135160**	*185215**	*250266**
*85100**	*140160**	*185220**	other size customize
*90105**	*140165**	*190210**	other size customize

Delivery Condition

1. BK(+C)

the final heat treatment after cold forming, threfore small steel pipe plasticly, the plasticly degree does not guarantee

2. BKS(+SR)

have a stress relief after cold forming, heat treatment, steel pipe can be carried out within a certain limit in the appropriate processing again

3. NBK(+N)

after cold forming, eventually above phase transition point, in a protective atmosphere of annealing oxidation medium

4. BKW(+LC)

after final heat treatment, a tiny cold drawing deformation, continue again when machining steel pipe allowed inside certain limits cold deformation(bending, flaring)

5. GBK(+A)

after cold forming, annealing in non oxidizing medium protective gas

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