5140 ML40Cr SCr440 GR8.8 alloy steel round bar
1.5140 40cR Scr440 Gr8.8 steel bar Main standard
| GB |
JIS |
DIN |
ASTM/AISI/SAE |
| 40Cr |
SCr40 |
41Cr4 |
5140 |
2.5140 40cR Scr440 Gr8.8 steel bar chemical compition
| C |
SI |
MN |
S |
P |
Cr |
Ni/Cu |
| 0.38-0.43 |
0.15-0.35 |
0.70-0.90 |
0.025 (max) |
0.025 (max) |
0.70-0.90 |
0.25 (max) |
3.40Cr 5140 41Cr4 SCr440 steel bar Mechanical Properties with QT
Hardness:207HB or according to client's request
Tensile strength:Min 980MPA
Yield strength: Min 785MPA
elogation:9% Reduction of area:45%
AKV(impact value):59J
4.our 40Cr 5140 41Cr4 SCr440 steel bar avaiable size
| Hot rolled round bars |
16mm to 350mm |
| Cold drawn bars |
6mm to 50mm |
| Forged round bars |
200mm-800mm |
5.40Cr 5140 41Cr4 SCr440 hot rolled steel round bar Quality Control Process
3)Gas Contents:
| Oxygen |
Nitrogen |
Hydrogen |
| 20ppm(max) |
90ppm(max) |
2ppm(max) |
4)Inclusion Rating:ASTM E45A
| |
A |
B |
C |
D |
| |
MAX |
MAX |
MAX |
MAX |
| Thin |
2.5 |
2.0 |
0.5 |
0.5 |
| Thick |
1.5 |
1.0 |
1.0 |
1.0 |
5)Common Grain Size: 5 to 8
6)Billet/steel bloom size
20-50mm: 180*220mm steel billet
52-85mm: 180*220mm steel billet
85-120mm: 260*300mm steel billet
130-210mm: 650mm round billet
210-350mm:800mm steel billet
6.Steel bar Supply condition Surface Treatment: Peeling, Turning, Grinding, Milling, Drilling, Boring
Heat Treatment: Normalizing, Annealing, Quenching+ Tempering
7.Straightness: 3mm/m(max)
8. Steel bar Packing:
*Bars from different heats will not be mixed and dispatched.
*Bars will be bundles and securely metal strapped in 3 min places of the bar length and tagged properly.
*For further processing products such as cold drawn/peeled or heat treated goods, plastics bag wrapped or pallet loading is available according to customer's demands.
- Delivery time of steel bar:7-10days of stock,30 days after order confirmed of new material
- Payment term:TT or LC
- Free sample:Yes
- steel bar Inspection: Spectral Tested, Microstructure Tested,Hardness Test,Macrostructure Test,UT sep1921 C/c
- 5.Our steel bar mill's certificate
ISO901&ISO.TS16949,ISO4001,OHSAS18001
Special Equipment Manufacturing License of P.R.C for pipeline plate,steel plate for boiler&Vessel;
ISO/TS16949 2009 for Manufacturing of Special steel;
Europe CE Mark Certificate;
JIS MARK,KS MARK.
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