Alloy 1.4021 Technical Data Sheet:
General information:
Alloy: 1.4021
Trade names: X20Cr13, AISI 420
Material number: 1.4021
DIN standard: X20Cr13
UNS number: S42000
Chemical composition:
Carbon content (C): 0.16–0.25%
Silicon content (Si): 1.00% max.
Manganese (Mn): 1.50% max.
Phosphorus (P): 0.04% max.
Sulfur (S): 0.03% max.
Chromium (Cr): 12.00–14.00%
Physical properties:
Density: 7.7 g/cm³
Melting point: 1450–1510°C
Thermal conductivity: 30 W/(m·K)
Electrical conductivity: 0.25 Ωmm²/m
Specific electrical resistance: 0.40 μΩm
Mechanical properties:
Tensile strength: 700–1000 N/mm²
Yield strength: 450–800 N/mm²
Elongation at break: 8–18%
Hardness: 190–230 HB
Heat treatment:
Hardenability: by quenching and tempering at temperatures between 950 and 1050°C
Tempering hardness: at 200–650°C for an optimal combination of hardness and toughness
Applications:
Cutting tools, surgical instruments, and injection molds
Valves, pump parts, and fittings in the chemical industry
Components in the aerospace industry
Blades, screws, and shafts in the food industry
Please note that the values stated here are guideline values and may vary depending on the manufacturing process, dimensions, and testing method. It is recommended to check the manufacturer’s specifications before use.
