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Model No: 4330M Alloy Steel
AMS 6411 / UNS J24045 / 4330M Alloy Steel
AMS 6411 is a specification that applies to 4330M alloy steel, a high-strength, low-alloy steel known for its toughness, fatigue resistance, and ability to perform under heavy stress.
Delivery :
FOB
minimum order :
100 kilograms
Supply Ability :
5000Tonkilograms / Month
Stock Time :
7-10Day
Country of Origin :
CHINA
Quantity :
AMS 6411 is a specification that applies to 4330M alloy steel (UNS J24045), a high-strength, low-alloy steel known for its toughness, fatigue resistance, and ability to perform under heavy stress. Lork Group offers 4330M in both round bar and flat bar forms, making it an excellent choice for aerospace, defense, and heavy-duty industrial applications.
Under AMS 6411, 4330M (UNS J24045) provides a strong combination of tensile strength and toughness, making it suitable for parts and components subjected to extreme mechanical stress. This steel grade is ideal for applications that require exceptional strength-to-weight ratios and reliable performance over long durations in harsh environments.
Chemical Composition
| Element | Content (%) |
|---|---|
| Iron, Fe | 95.3-98.1 |
| Nickel, Ni | 1.0-1.50 |
| Manganese, Mn | ≤ 1.0 |
| Silicon, Si | ≤ 0.80 |
| Chromium, Cr | 0.40-0.60 |
| Molybdenum, Mo | 0.30-0.50 |
| Carbon, C | 0.20-0.30 |
Physical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Melting point | 1427°C | 2600°F |
Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | ≥ 860 MPa | ≥ 125000 psi |
| Yield strength | ≥ 690 MPa | ≥ 100000 psi |
| Elongation at break (In 50 mm) | ≥ 15.0 % | ≥ 15.0 % |
| Hardness, Brinell | 285 | 285 |
Machinability
AISI 4330M alloy steel has good machinability features in the annealed, tempered and normalized conditions. This alloy steel is difficult to be machined in the hardened condition.
Heat Treatment
AISI 4330M alloy steel is heated to 829°C (1525°F) and then quenched in oil. AISI 4330 alloy steel can also be heat treated to strength levels of 200 ksi or greater than 200 ksi, by first being normalized at 899°C (1650°F) before the heat treatment and then quenched to gain strength.
Hot Working
4330M alloy steel is generally not hot worked as it already has good cold forming features.
Hardening
4330M alloy steel can be hardened by being tempered and heat treated.
Applications
AMS 6411 alloy steel, particularly 4330M in round bar and flat bar forms, is used in a wide variety of industries where high performance under stress is essential. Common applications include:
- Aerospace landing gear, structural components, and other high-stress parts
- Heavy-duty machinery and industrial tools
- Military and defense equipment
- Automotive powertrain and transmission components
Lork Group is metal material manufacturer and exporter in China
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