Introduction
304L stainless steel, also known as ultra-low carbon stainless steel, is a versatile stainless steel material that is widely used to make equipment and parts that require good comprehensive performance (corrosion resistance and formability).
304L is a variant of 304 stainless steel with a lower carbon content and is used where welding is required. The lower carbon content minimizes the precipitation of carbides in the heat-affected zone close to the weld, and the precipitation of carbides may cause intergranular corrosion (welding erosion) of stainless steel in certain environments.
Chemical components(%)
Composition | C | Si | Mn | P | S | Cr | Ni |
Min | \ | \ | \ | \ | \ | 18.00 | 8.00 |
Max | 0.03 | 1.00 | 2.00 | 0.035 | 0.03 | 20.00 | 12.00 |
Mechanical properties
Rigidity | Tensile strength | Yield strength | Elongation |
≤187 | ≥520MPa | ≥205MPa | ≥40% |
Physical properties
Density | Melting points | Specific heat | Magnetism | Resistivity | Thermal conductivity | Linear expansivity |
7.93g/cm3 | 1398-1420℃ | 0.502J/(g.℃) | \ | 0.73Ω·mm²/m(20℃) | 16.3W/(m.k)(100℃) | 16.0×10-6/K(20-100℃) |
304L Stainless steel Available products and Standard
Round bars/Wires | ASTM A276,ASTM A314 |
Sheet/Plate/Strip | ASTM A240 |
Seamless and Welded Tubes/Pipes | ASTM A312(for high-temperature and general corrosive service) ASTM A269 (Seamless and Welded Austenitic Stainless Steel Tubing) ASTM A213 (Seamless Steel Boiler,Superheater,and Heat-Exchanger Tubes) |
Flanges/Fittings/Valves/Parts | ASTM A182 |
Applications
n Food processing equipment, particularly in beer brewing, milk processing, and wine making
n Kitchen benches, sinks, troughs, equipment, and appliances
n Architectural trim and molding
n Automotive and aerospace structural use
n Construction material in large buildings
n Chemical containers, including for transport
n Heat exchangers
n Nuts, bolts, screws, and other fasteners in the marine environment
n Dyeing industry
n Woven or welded screens for mining, quarrying & water filtration
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