General information:
Alloy type: 1.7335
Main alloying elements: Iron (Fe), chromium (Cr), molybdenum (Mo)
International standard: EN 10028-2
Mechanical properties:
Tensile strength: 450–600 MPa
Yield strength: 280–400 MPa
Elongation at break: 22–35%
Hardness (Rockwell): —
Modulus of elasticity: 190–210 GPa
Physical properties:
Density: 7.85 g/cm³
Melting point: approx. 1420–1470°C
Thermal conductivity: 33 W/(m·K)
Electrical conductivity: —
Chemical composition, in weight percent:
Carbon (C): 0.10–0.17%
Chromium (Cr): 0.70–1.15%
Molybdenum (Mo): 0.40–0.60%
Manganese (Mn): 0.40–0.70%
Silicon (Si): max. 0.35%
Phosphorus (P): max. 0.025%
Sulfur (S): max. 0.010%
Heat treatment:
Alloy 1.7335 can be heat treated in order to improve its mechanical properties. The most common heat treatment conditions are:
Normalizing: Heating to 890–950°C followed by slow cooling in air.
Quenching and tempering: Heating to 960–1000°C followed by quenching in water or oil.
Corrosion resistance:
Alloy 1.7335 offers good resistance to oxidizing environments and steam at elevated temperatures. However, it is not resistant to corrosive media such as strong acids and salt solutions.
Applications:
Alloy 1.7335 is frequently used in the petrochemical, power generation, and power plant industries, particularly for pressure vessels, piping systems, and heat exchangers that must withstand high temperatures and pressures.
Please note that the values stated are guideline values and may vary slightly depending on the manufacturing process and specific production batch. It is recommended to always check the exact specifications provided by the manufacturer.
