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Stainless Steel - Grade 201 / 1.4372
Description
Stainless Steel Grade 201/1.4372 is an austenitic chromium-nickel-manganese stainless steel developed to conserve nickel. It is a lower-cost alternative to traditional 304 stainless steel. Grade 201 offers high tensile strength and good corrosion resistance, suitable for various applications where cost savings are a priority. While it has less corrosion resistance compared to 304 stainless steel, it remains adequate for many applications.
Chemical Composition
- Chromium (Cr): 16.0 - 18.0%
- Nickel (Ni): 3.5 - 5.5%
- Manganese (Mn): 5.5 - 7.5%
- Silicon (Si): ≤ 0.75%
- Nitrogen (N): ≤ 0.25%
- Carbon (C): ≤ 0.15%
- Phosphorus (P): ≤ 0.060%
- Sulfur (S): ≤ 0.030%
Mechanical Properties
- Tensile Strength: 515 - 725 MPa
- Yield Strength: 275 - 520 MPa
- Elongation: 35 - 60%
- Hardness: 95 HRB
Thermal & Physical Properties
- Density: 7.93 g/cm³
- Melting Range: 1400 - 1455°C
- Specific Heat (0-100°C): 500 J/kg•K
- Thermal Conductivity: 16.3 W/m•K
- Electrical Resistivity: 0.73 µΩ•m
Other Designations
- UNS: S20100
- EN: 1.4372
- JIS: SUS201
Fabrication and Heat Treatment
- Formability: Grade 201/1.4372 can be easily formed and welded using standard techniques. It is more challenging to cold work than 304 but offers good formability.
- Weldability: Weldable by common methods, including TIG, MIG, and resistance welding. Post-weld annealing is recommended to maintain corrosion resistance.
- Heat Treatment: Annealing temperature range is 1010 - 1093°C, followed by rapid cooling. Not hardenable by heat treatment.
Applications
- Cookware: Pots, pans, and kitchen utensils.
- Appliances: Refrigerators, dishwashers, washing machines.
- Architectural: Exterior accents, trim, and roofing.
- Automotive: Decorative trim and exhaust systems.
- Industrial: Chemical and textile industries, particularly where high strength and wear resistance are required.
- Furniture: Indoor and outdoor furniture.
Supplied Forms
- Bars
- Wires
- Coils
Features
- Corrosion Resistance: Good resistance to atmospheric corrosion and acidic environments, though less than 304 stainless steel.
- High Strength: Higher tensile strength than 304 stainless steel, making it suitable for applications requiring durability and strength.
- Cost-Effective: Lower nickel content makes it a more economical choice compared to 304 stainless steel.
- Good Formability: Can be easily formed and welded using standard techniques.
- Magnetic: Slightly magnetic in the annealed condition, becoming more magnetic when cold worked.
- Temperature Tolerance: Can withstand moderately high temperatures.