Supreme Steels

20XH24A

Product Description:

20XH24A is a chromium-nickel alloy steel designed for high-performance applications requiring excellent strength, toughness, and resistance to wear. It is commonly used in the aerospace, automotive, and heavy machinery industries. The addition of chromium and nickel enhances its corrosion resistance and mechanical properties, making it suitable for demanding environments.

Chemical Composition:

Element Composition (%)
Carbon (C) 0.16–0.22
Chromium (Cr) 2.2–2.6
Nickel (Ni) 1.5–2.0
Manganese (Mn) 0.3–0.6
Silicon (Si) ≤ 0.35
Phosphorus (P) ≤ 0.025
Sulfur (S) ≤ 0.025
Iron (Fe) Balance

Mechanical Properties:

Property Value
Yield Strength (σ₀.₂) ≥ 600 MPa
Ultimate Tensile Strength (σᵤ) 900–1100 MPa
Elongation (δ₅) ≥ 15%
Impact Toughness (KCU) ≥ 50 J/cm²
Hardness (HB) 220–280 (after heat treatment)
Modulus of Elasticity ~210 GPa

Physical Properties:

Property Value
Density 7.85 g/cm³
Thermal Conductivity ~30 W/m·K
Specific Heat Capacity ~460 J/kg·K
Melting Point ~1450°C

Heat Treatment:

Applications:

Corrosion Resistance

While 20XH24A provides decent corrosion resistance due to its chromium and nickel content, it is not a specialized corrosion-resistant steel like stainless steel. For enhanced durability in highly corrosive settings, surface treatments or alternative materials (e.g., high-chromium or stainless steel grades) are recommended.