40Cr/SAE5140/SCR440 Material Steel Round Bar
40Cr/SAE5140/SCR440 Material Description :
This steel is one of the most widely used steels in machinery manufacturing. After quenching and tempering, it has good comprehensive mechanical properties, good low temperature impact toughness and low notch sensitivity. The hardenability of steel is good. It can be hardened to Ф28~60mm in water quenching and Ф15~40mm in oil quenching. In addition to quenching and tempering, this steel is also suitable for cyanidation and induction hardening. The cutting performance is better. When the hardness is 174~229HB, the relative machinability is 60%. The steel is suitable for making medium-sized plastic molds.
Chemical Composition
Steel Grade |
Chemical Composition |
C |
Si |
Mn |
Cr |
Ni |
P |
S |
Cu |
Mo |
40Cr |
0.37-0.44 |
0.17-0.37 |
0.50-0.80 |
0.80-1.10 |
≦0.30 |
≦0.035 |
≦0.035 |
≦0.30 |
≦0.10 |

Cut into short length :
We can cut the length from 10mm min for clients , by this way, clients can save time and cost when processing to other products.

TPI Inspection accepted

Category of Steel Round Bar We can provide
Category |
Sizes |
China Grade |
American Standard |
DIN STANDARD |
Carbon structure steel |
16mm-250mm |
Q235
10#
20#
35#
45# |
A570 GR.33
SAE1010
SAE1020
SAE1035
SAE1045 |
St37-2
C10 CK10
C22 CK22
C35 CK35
C45 CK45 |
Low alloy high strength structure steel |
16mm-250mm |
Q345 |
- |
ST52 |
Alloy structure steel |
16mm-250mm |
40Cr
35CrMov
40CrNiMo
42CrMo
20CrMnTiH
27SiMn
20CrMoA
35CrMoA
42CrMoA
40Mn2
45Mn2
15CrmoG
12Cr1MoVA |
AISI5140
AISI4135
AISI4340
AISI4140/4142 |
41Cr4
34CrMo4
36CrNiMo4
41CrMo4/42CrMo4 |