• Model NO.：40cr 40X SCr440 41cr4 5140
• Transport Package：Sea Worthy Packing
• Specification：16mm to 300mm
• Origin：China
• HS Code：72283090
• Production Capacity：3000tons,Month

Basic Info.

Model NO. 40cr 40X SCr440 41cr4 5140 Transport Package Sea Worthy Packing Specification 16mm to 300mm Origin China HS Code 72283090 Production Capacity 3000tons/Month

Product Description

40cr 40X SCr440 41cr4 5140 Hot rolled Alloy Steel Round Bars
 Standard steel GB in China is 40Cr, the German DIN standard material No. 1.17035/1.7045, German standard DIN grade 41Cr4/42Gr4, EN grade 18 British standard, the British standard BS steel 41Cr4, France AFNOR 42C4 France NF steel standard, standard grade of steel 38Cr4/41Cr4, Italy UNI 41Cr4 Belgium NBN steel standard, standard grade of steel 42Cr4, Sweden SS standard grade 2245. The American AISI/SAE/ASTM standard grade 5140, the Japanese JIS standard grade SCr440 (H) /SCr440, the international organization for standardization ISO standard steel 41Cr4.

1.Materials equivalent grade 

ASTM	JIS	DIN	BS	NF
5140	SCr440	41Cr4(1.7035)	530A40	42C4

2.SAE 5140 40Cr chemical composition

Grade	C	Si	Mn	Cr	P(≤)	S(≤)
40Cr	0.37-0.44	0.17-0.37	0.5-0.8	0.8-1.0	0.035	0.035
SAE 5140	0.38-0.43	0.15-0.35	0.7-0.9	0.7-0.9	0.035	0.035
SCR440	0.38-0.43	0.15-0.35	0.6-0.9	0.9-1.2	0.035	0.035
40X	0.36-0.44	0.17-0.37	0.5-0.8	0.8-1.1	0.035	0.035
41Cr4	0.38-0.45	0.1-0.4	0.6-0.9	0.9-1.2	0.035	0.035

3.40Cr properties:

Sample blank size (mm):25

The first quenching heating temperature (ºC):850; coolant: Oil

Second quenching heating temperature (ºC):-

Tempering heating temperature (ºC):520;

Tensile strength (σb/MPa): ≥980

The yield point (σs/MPa): ≥785

Elongation (δ5/%): ≥9

Section shrinkage (ψ/%): ≥45

Impact absorbing energy (Aku2/J): ≥47

Brinell hardness (HBS100/3000) (high temperature annealing or tempering): ≤207

4.Sizes we can offer for 40Cr sae 5140 steel bars :16mm to 310mm

5.Delivery condition choice:
1.Hot rolled
2.Hot rolled+Q&T
3.Cold drawn+Q&T
4.Hot rolled+Cold Drawn 

6.Quality control:
We company have good QC inspection tear and full set of inspect equipment including: UT test machine, Tensile testing machine,Hardness testing machine,Dimensional measuring instrument,f,spectrometer,Metallographic microscope and so on, so that we can always supply good mateterials for various projects and industries .

7.MOQ for QT steel bars: 2tons
8.Our payment term:TT or LC.
9.Delivery time : 7-30 days upon to your sizes&quantity.