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Related Specifications
AISI 201 stainless steel corresponds to the following specifications:
- UNS20100/EN1.4372/JIS SUS 201
AISI 201L stainless steel corresponds to the following specifications:
- UNS20103/EN1.4371
AISI 202 stainless steel corresponds to the following specifications:
- UNS20200/EN1.4373
AISI 204C stainless steel corresponds to the following specifications:
- UNS20400/EN1.4597
Properties
Chemical Composition
| Chemical Element | % Present |
|---|---|
Chromium (Cr) | 16.00 - 18.00 |
Manganese (Mn) | 6.80 - 8.50 |
Nickel (Ni) | 2.00 - 5.00 |
Nitrogen (N) | 0.00 - 0.25 |
Iron (Fe) | Balance |
Mechanical Properties
| Mechanical Property | Value |
|---|---|
Proof Stress | 310 Min MPa |
Tensile Strength | 655 Min MPa |
Elongation A50 mm | 40 min % |
General Physical Properties
| Physical Property | Value |
|---|---|
Density | 7.80 g/cm³ |
Thermal Expansion | 17 x 10-6/K |
Modulus of Elasticity | 200 GPa |
Thermal Conductivity | 15 W/m.K |
Applications
200 series austenitics are typically used to replace types 304 and 301 as well as carbon (chrome-manganese) steels mainly for indoor use for low corrosion applications at room temperature.
- Cooking utensils
- Restaurant equipment
- Appliances
- Automotive trim
- Architectural applications
- Windows & channel spacers
- Doors
- Railway cars
- Trailers
- Hose clamps
Furniture
Bins
Safety Shoes (mid-sole protector)
Industrial Strapping
Railway Rolling Stock
There is also grade 201LN for welded constructions, structural uses and low temperature applications. Examples include:
Sides & roofs of trains
Liquified gas storage vessels
Structural members/chassis of railway rolling stock, trucks & trailers
Coal handling equipment
Characteristics
- Lower nickel than 300 series – with it being replaced by manganese
- Lower cost than 300 series
- Similar mechanical & physical properties to 300 series
- Similar fabrication performance to 300 series, including deep-drawing
- Corrosion resistance similar to 430 (i.e. not nearly as good as 300 series)
- High carbon may cause stress corrosion cracking, especially after welding thicker material
- Non Magnetic
Performance Comparison: - Formability: Similar to 304, better than 430
- Strength: Stronger than 304 (and 430)
- Corrosion Resistance @20 C: Similar to 304, better than 430 but susceptible to stress corrosion cracking/intergranular corrosion especially after welding
Additional Information
Weldability
- Reasonable, although sensitive to intergranular corrosion in the heat affected zone where thickness exceeds 6mm.
- Post-weld cleaning and passivation is crucial.
Corrosion Resistance
- The 200 series grades perform at a similar level to grades 304 and 301 in low corrosion, mainly indoor applcations at room temperature.
- Not recommended for use in chloride environments.
Heat Resistance
- Oxidation resistance is similar to grade 1.4310 (301) up to 840C.
Performance Comparison
- The 200 series grades perform at a similar level to grades 304 and 301 in low corrosion, mainly indoor applcations at room temperature.
