Alloy 1.4509 technical data sheet:
General information:
Alloy: 1.4509
Trade names: X2CrTiNb18, AISI 441
Material number: 1.4509
DIN standard: X2CrTiNb18
UNS number: S43940
Chemical composition:
Carbon content (C): 0.03% 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%
Titanium (Ti): 0.30 - 0.60%
Niobium (Nb): 0.15 - 0.45%
Physical Properties:
Density: 7.7 g/cm³
Melting point: 1425 - 1510 °C
Thermal conductivity: 25 W/(m*K)
Electrical conductivity: 0.6 Ωmm²/m
Specific electrical resistance: 0.17 μΩm
Mechanical properties:
Tensile strength: 450 - 600 N/mm²
Yield point: 260 - 320 N/mm²
Elongation at break: 20 - 30%
Hardness: 160 - 200 HB
Heat treatment:
Hardenability: by tempering at temperatures between 950 and 1050 °C
Tempering hardness: at 600 - 700 °C for an optimal combination of hardness and toughness
Application areas:
Automotive industry (e.g. exhaust systems, catalytic converters)
Household appliances (e.g. extractor hoods)
Construction and architecture industry (e.g. facade cladding, gutters)
Food industry (e.g. mechanical engineering, pipelines)
Please note that the values given here are guide values and may vary depending on the manufacturing process, dimensions and testing method. It is recommended to check the manufacturer's specifications before use.
