| Type: | Alloy Steel Bar |
|---|---|
| Special Use: | Mold Steel |
| Alloy Or Not: | Is Alloy |
| Application: | Die Steel Bar |
| Technique: | Hot rolled or Forged |
| Model Number: | 4340 |
| Brand Name: | songshun |
| Place of Origin: | China (Mainland) |
| Dimensions: | Dia:20-90mm,Length:1600-5800mm |
| Standard: | AISI,ASTM,BS,DIN,GB,JIS |
| Steel Grade: | 40CrNiMoA/4340/1.6511/SCM439 |
| Name: | High Quality large dia steamer steel 4340 Steel Round Bar |
| Grade: | 40CrNiMoA/4340/1.6511/SCM439 |
| Applications: | alloy Steel Bar |
| Thickness: | customized |
| Technique: | hot rolled or Forged |
| Surface Treatment: | black/polish/machined |
| Packing: | unpacked or based on client's request |
| MOQ: | 15 tons |
| Shape: | plate/flat bar/round bar/sheet |
| Density: | 7.85t/m^3 |
Quick Details
Specifications
Specification
1. Chromium molybdenum alloy steel.
2. High strength and toughness.
3. Good stability of hardenability and anti-overheating.
4. Good high tensile strength with shock resistance.
Application
1. Heavy machinery and high-load of shaft.
2. Rotor shaft and blades.
3. Special performance requirements of the vital parts after nitriding treatment.
Chemical composition
| NAME | C | Si | Mn | P | S | Cr | Mo |
| 4340 | 0.38-0.43 | 0.15-0.35 | 0.60-0.80 | ≤0.035 | ≤0.040 | 0.70-0.90 | 0.20-0.30 |
Similar grade
| GB | AISI/ASTM | DIN | JIS |
| 40CrNiMoA | 4340 | 1.6511 | SCM439 |