General information:
Alloy: 1.4828 (also known as X15CrNiSi20-12, AISI 309)
Chemical composition: 18-21% chromium, 10-12% nickel, ≤2% manganese, ≤1.5% silicon, ≤0.20% carbon, ≤0.04% phosphorus, ≤0.03% sulphur, balance iron
Standards: EN 10095, ASTM A240/A240M, ASTM A312/A312M
Mechanical properties:
Tensile strength: ≥ 520Mpa
Yield strength: ≥ 210Mpa
Elongation at break: ≥ 40%
Hardness: ≤ 200HB
Modulus of elasticity: 200GPa
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 x 10^6 S/m
Magnetizability: Non-magnetic
Corrosion resistance:
Good resistance to oxidizing and reducing media
Resistant to intergranular corrosion at temperatures up to 900°C
Susceptible to pitting corrosion in chloride containing environments
Heat treatment:
Solution heat treatment at 1050-1150°C followed by rapid water or air quenching
Applications:
High temperature applications: furnace linings, heat exchangers, combustion chambers
Chemical industry: pipelines, tanks, fittings
Oil and gas industry: pipelines, heat exchangers, pressure vessels
Food processing: heat exchangers, piping, vessels
Note: This data sheet is for informational purposes only and is based on the information available at the time of writing. Due to the limited information on this specific alloy, it is recommended to check the specific requirements of your application with the appropriate standards and manufacturers.
