Alloy 1.4521 Technical Data Sheet:
General information:
Alloy: 1.4521
Trade names: X2CrMoTi18-2, AISI 444
Material number: 1.4521
DIN standard: X2CrMoTi18-2
UNS number: S44400
Chemical composition:
Carbon content (C): 0.025% max.
Silicon content (Si): 1.00% max.
Manganese (Mn): 1.00% max.
Phosphorus (P): 0.04% max.
Sulfur (S): 0.03% max.
Chromium (Cr): 17.50–19.50%
Molybdenum (Mo): 1.75–2.50%
Titanium (Ti): 0.20–0.60%
Physical properties:
Density: 7.8 g/cm³
Melting point: 1450–1510°C
Thermal conductivity: 26 W/(m·K)
Electrical conductivity: 0.5 Ωmm²/m
Specific electrical resistance: 0.20 μΩm
Mechanical properties:
Tensile strength: 450–650 N/mm²
Yield strength: 270–420 N/mm²
Elongation at break: 20–35%
Hardness: 170–220 HB
Heat treatment:
Hardenability: by quenching and tempering at temperatures between 1050 and 1100°C
Tempering hardness: at 750–900°C for an optimal combination of hardness and toughness
Applications:
Chemical industry, e.g. piping systems and tanks
Water and wastewater technology, e.g. wastewater treatment plants
Food industry, e.g. mechanical engineering and piping systems
Construction and architecture industry, e.g. façade cladding
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.
