Model:Alloy steel 4340
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Grade: 4340/40CrNiMo/SNCM439/41CrNiMo4/1.6563
Chemical Composition | |||||||
C | Si | Mn | Cr | Mo | Ni | P | S |
0.37-0.44 | 0.17-0.37 | 0.50-0.80 | 0.60-0.90 | 0.15-0.25 | 1.25-1.65 | ≤0.035 | ≤0.035 |
Specification :
| Diameter (mm) | Length (mm) |
|
12~200mm | 4000~6000 | Hot rolled | |
210~800mm | 3000~5800 | forged | |
Flat bars/blocks | Thickness(mm) | Width(mm) | Length (mm) |
20~600 | 50~800 | 1000~5800 |
Delivery condition:
1. EAF+LF+VD, rolled /forged, UT pass
2. Surface: black surface, turned surface and milling surface according to customer’s requirements.
3. Heat treatment such as normalizing or annealing or Q/T can be done according to customer’s technical specifications
