General information:
Alloy: 1.4878, also known as X8CrNiTi18-10 or AISI 321H
Chemical composition: 17–20% chromium, 9–12% nickel, ≤2% manganese, ≤1% silicon, ≤0.08% carbon, ≤0.04% phosphorus, ≤0.03% sulfur, 0.7–1.0% titanium, balance iron
Standards: EN 10095, ASTM A240/A240M, ASTM A182/A182M
Mechanical properties:
Tensile strength: ≥ 500 MPa
Yield strength: ≥ 205 MPa
Elongation at break: ≥ 40%
Hardness: ≤ 215 HB
Modulus of elasticity: 200 GPa
Physical properties:
Density: 7.9 g/cm³
Melting point: approximately 1400–1450°C
Thermal conductivity: 15–20 W/(m·K)
Electrical conductivity: 0.75–0.8 × 10⁶ S/m
Magnetizability: non-magnetic
Corrosion resistance:
Good resistance to oxidizing and reducing media
High resistance to intergranular corrosion at temperatures up to 800°C
Susceptible to pitting corrosion in chloride-containing environments at higher temperatures
Heat treatment:Solution annealing at 950–1050°C, followed by rapid quenching in water or air
Applications:
High-temperature applications: furnace linings, heat exchangers, combustion chambers
Chemical industry: piping systems, vessels, fittings
Food processing: heat exchangers, piping systems, vessels
Note: This data sheet is for informational purposes only and is based on the information available at the time of preparation. Due to the limited information available for this specific alloy, it is recommended to verify the specific requirements of your application with the relevant standards and manufacturers.
