40Cr Steel Equivalent / GB 40Cr Hot Rolled Steel Round Bar
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.Supply Size range
Hot Rolled en19 steel bar: Ø16mm-310mm
Forging en19 steel bar: Ø260mm-1000mm
Q&T (Quenched&tempered):Ø16-1000mm
Cold drawn bright steel bars : 5mm to 120mm
2.Materials equivalent grade
| ASTM |
JIS |
DIN |
BS |
NF |
| 5140 |
SCr440 |
41Cr4(1.7035) |
530A40 |
42C4 |
3.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 |
4.Delivery condition choice:
1.Hot rolled
2.Hot rolled+Q&T
3.Cold drawn+Q&T
4.Hot rolled+Cold Drawn
5.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 .
6.Application of 40Cr 5140 steel round bars
It is one of the most popular steel grades in the industry. After Q+T heat treatment, it usually is used to make parts. Such as the gears of machine tools, shaft, worm, spline shaft and etc. If it is through quenching and tempering; high-frequency quenching, it will be good choice for fittings with high hardness and wear resistance. For example, wheel gear, shaft, principal axis, crankshaft, arbor, inlet valve, bolt and etc
7.MOQ s: 2tons
8.Our payment term:TT or LC.
9.Delivery time : 7-30 days upon to your sizes&quantity.
Audited Supplier 
){kind=link}