UNS S30815 - SUS 308L

S30815 is a022Cr22Ni5Mo3N stainless steel, belongs to the ultra-low carbon stainless steel, has better corrosion resistance and processing performance. It is a class of stainless steel with nitrogen and molybdenum elements added on the basis of 304 stainless steel to improve its resistance to pitting corrosion and stress corrosion cracking.

National rules model：

American Society for Testing and Materials (ASTM): A666 TP308L

JIS Standard: SUS 308L

European Norm (EN): X2CrNiMoN18-12 (1.4308)

Unified Numbering System (UNS): S30815

Chemical Composition:

Chromium (Cr): 19.0-23.0%

Nickel (Ni): 10.0-14.0%

Molybdenum (Mo): 2.0-3.0%

Nitrogen (N): 0.10-0.20%

Manganese (Mn): ≤2.0%

Silicon (Si): ≤1.0%

Phosphorus (P): ≤0.045%

Sulfur (S): ≤0.030%

Carbon (C): ≤0.03% (as a maximum limit for "L" grade)

Physical Properties:

Density: Approximately 7.9 g/cm³

Melting Point: Around 1390-1450°C

Thermal Expansion Coefficient: 16.3 x 10⁻⁶ /°C (at room temperature)

Mechanical Properties:

Tensile Strength: 515 MPa

Yield Strength: 205 MPa

Elongation: 40%

Hardness: Approximately 200 HV

Application Areas:

Chemical Processing: Used in equipment and piping systems that handle various chemicals due to its good general corrosion resistance.

Petroleum and Chemical Industry: Ideal for oil and gas industry applications where sulfuric and phosphoric acids are present.

Marine Applications: Suitable for marine environments due to its excellent corrosion resistance and strength.

Food Processing: Used in equipment that processes, stores, and handles food products, given its non-porous surface and compatibility with food-grade standards.

Automotive Industry: Employed in components where corrosion resistance and light weight are necessary.

Nuclear Industry: S30815 has properties that make it suitable for use in nuclear industry applications due to its resistance to stress corrosion cracking and puncturing.

Heat Exchangers: Widely used in equipment that requires corrosion resistance and where high pressures and temperatures are encountered.

Please note that the specific chemical composition, physical, and mechanical properties, as well as country-specific standards, may vary. The information provided here is for general guidance and may not be exhaustive or up-to-date. Always refer to the latest standards or manufacturer's data for precise details.

Common Surfaces

Stainless Steel Standards Comparison Table