SAE 5140 / SCR440 / 1.7035 / 40CR Special Mechanical Tool 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.
Hi dear customers:
Our company , Laiwu Xincheng Metal Co.,Ltd always keep thousands tons of stocks with Grade 1020/S20C, SS400/S235JR, SAE1045/C45/S45C, 5140/40Cr, 4140/42CrMoA/EN19 . Condition is hot rolled and forged steel, diameter from 16mm to 320mm.
And we can do futhur processing such as cold drawn, Q&T for different customers ,also we can cut to small lengths say 100mm to 6000mm for different use.
Welcome your inquiry in 24 hours!
Our proffesional team will give you earliest reply and best services, we will not let you down if you choose us .
Thanks a lot.
Audited Supplier 
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