Alloy Steel 4130 (1.7218)

About

Alloy steel 4130 (1.7218) is a low-alloy chromium-molybdenum steel designed for applications requiring high strength, toughness, and excellent fatigue resistance. Known for its balanced mechanical performance and good machinability, the material is widely used for structural and high-performance components subjected to repeated stress or demanding operating conditions.

The material offers a strong combination of strength, ductility, and impact resistance, making it suitable for components that must withstand mechanical loads while maintaining reliability over time.

Alloy steel 4130 can be heat treated to improve strength and hardness, and it provides excellent weldability compared to many other alloy steels. While it offers limited natural corrosion resistance, protective coatings or surface treatments are commonly applied when environmental exposure is a concern.

Typical applications include structural components, aerospace parts, automotive components, shafts, fasteners, and tooling where strength-to-weight performance, durability, and fatigue resistance are key requirements.

Technical Details

Accuracy

±0.2% (lower limit of ±0.13 mm)

Density

7.85 g/cm³

Min. wall thickness

-

Tensile strength

560 - 670 MPa

Tensile modulus

190000 - 210000 MPa

Tensile elongation

20 - 30%

Embossing

min. 0.3 mm

Engraving

min. 0.3 mm

Warping risk

N/A

Maximum printing dimensions

1,200 × 1,100 × 1,100 mm