X2CrNi19-11 Stainless Steel Standard

Chemical Composition

 

X2CrNi19-11 is an austenitic stainless steel with the following chemical composition:

Carbon (C): ≤0.03
Silicon (Si): ≤1.00
Manganese (Mn): ≤2.00
Phosphorus (P): ≤0.045
Sulfur (S): ≤0.030
Chromium (Cr): 18.00-20.00
Nickel (Ni): 10.00-12.00

These components provide excellent corrosion resistance and processability.

 

 

Mechanical Properties of X2CrNi19-11

Tensile Strength (Rm): ≥520 MPa.
Yield Strength (Rp0.2): ≥205 MPa.
Elongation (A): ≥40%.
Reduction of Area (Z): ≥63%.
Hardness: Brinell Hardness ≤187 HB.

 

Physical Properties

Density: Approximately 7.8 g/cm³.
Coefficient of Thermal Expansion: 11.3 × 10⁻⁶/°C between 20°C and 100°C.
Thermal Conductivity: 11.3 W/(m·K) at 20°C, 21.2 W/(m·K) at 597°C.
Specific Heat: 0.44 J/(kg·°C) at 20°C, 432 J/(kg·°C) at 246°C.
Resistivity: 0.44 Ω·mm²/m.

 

Heat Treatment

Solution treatment: 920-1150°C followed by rapid cooling to achieve a non-magnetic austenitic structure.
Annealing: 750-850°C followed by slow cooling to reduce hardness and increase ductility. Quenching and Tempering: Quenching temperatures are 950-1050°C, and tempering temperatures are 600-700°C to optimize strength and toughness.

 

Performance

Good Corrosion Resistance: High chromium and nickel contents enable excellent performance in a variety of corrosive environments.
High Strength and Toughness: High tensile strength and yield strength while maintaining good ductility and toughness.
Processing Properties: Excellent cold working and weldability.
Intergranular Corrosion Resistance: Ultra-low carbon content reduces the risk of intergranular corrosion.

 

Applications

X2CrNi19-11 is widely used in the following applications due to its excellent properties:
Chemical Industry: Used in the manufacture of reactors, storage tanks, heat exchangers, etc.
Food Processing Equipment: Used in food storage tanks, conveyor belts, etc.
Medical Devices: Used in the manufacture of surgical instruments and implants, etc.
Architectural Decoration: Used in stainless steel pipes, doors, and windows, etc.