X15CrNiSi2012 Steel: Meeting the Demands of High-Temperature Applications

X15CrNiSi2012 Steel: Meeting the Demands of High-Temperature Applications

Specification X15CrNiSi2012 Steel: Meeting the Demands of High-Temperature Applications

X15CrNiSi2012 steel is a heat-resistant stainless steel that is widely used in high-temperature applications such as furnace parts, exhaust systems, and heat exchangers. It is known for its excellent oxidation resistance, high creep strength, and good mechanical properties even at elevated temperatures. The following specifications outline the key properties and characteristics of X15CrNiSi2012 steel:

1. Chemical Composition:
– Carbon (C): 0.12 – 0.20%
– Silicon (Si): 1.50 – 2.50%
– Manganese (Mn): ≤ 1.00%
– Phosphorus (P): ≤ 0.030%
– Sulfur (S): ≤ 0.015%
– Chromium (Cr): 15.50 – 17.50%
– Nickel (Ni): 1.00 – 3.00%
– Sulphur (S): ≤ 0.015%
– Nitrogen (N): 0.20 – 0.35%
– Iron (Fe): Balance

2. Mechanical Properties:
– Tensile Strength: ≥ 550 MPa
– Yield Strength: ≥ 210 MPa
– Elongation: ≥ 40%
– Hardness (Brinell): ≤ 219 HB
– Impact Toughness (Charpy V-notch): ≥ 18 J/cm²

3. Physical Properties:
– Density: 7.85 g/cm³
– Melting Point: 1400-1420°C
– Thermal Conductivity: 16.3 W/m·K at 100°C
– Specific Heat Capacity: 0.5 J/g·K at 20°C
– Electrical Resistivity: 0.75 μΩ·m at 20°C

4. Heat Treatment:
X15CrNiSi2012 steel can be heat treated to enhance its mechanical properties and improve its performance at high temperatures. The typical heat treatment involves annealing, which involves heating the steel at a temperature range of 700-800°C for a specific period, followed by slow cooling to room temperature. Other heat treatment processes like quenching and tempering can also be applied to achieve desired properties.

5. Corrosion Resistance:
X15CrNiSi2012 steel exhibits excellent resistance to oxidation and high-temperature corrosion due to the presence of chromium and silicon in its composition. It forms a protective oxide layer on the surface at high temperatures, preventing further corrosion and scaling.

Overall, X15CrNiSi2012 steel is a reliable and versatile material for high-temperature applications. Its combination of mechanical strength, high-temperature stability, and corrosion resistance make it suitable for demanding environments where strength and durability are crucial.
X15CrNiSi2012 Steel grade