Stainless steel
EU
1.4307 - 1.4306 - X2CrNi18-9 - X2CrNi19-11 - Z2CN18-10 - Z3CN18.10
US
AISI 304 L - S30403
304L (UNS S30403) is the name given to the most common chromium-nickel "18-8" stainless steel. This versatile and corrosion-resistant alloy can be used for a wide range of general applications.
304L stainless steel - 1.4307 - Available from stock
304L stainless steel, also known as 1.4306 in Europe as well as by the code UNS S30403, is a low-carbon variant of type 304 austenitic stainless steel. It is specially designed to provide excellent corrosion resistance while still offering good mechanical properties.
Technical summary of this steel:
- Europe: 1.4307 | 1.4306 | X2CrNi18-9 | X2CrNi19-11 | Z2CN18-10 | Z3CN18.10
- USA: AISI 304 L | S30403
- Europe: EN 10088-1 | EN 10088-2 | EN 10088-3 | EN 10088-4 | EN 10088-5 | EN 10028-7 | EN 10222-5 | EN 10216-5 | EN 10217-7 | EN 10296-2 | EN 10253-3 | EN 10253-4 | EN 10272 | EN 10269 | EN 10263-5 | EN 10250-4 | EN 10297-2
- USA: ASTM A240 | A276 | A313 | A314 | A473 | A479 | A580 | ASTM 666 | A959 | SAE J405
- High corrosion resistance when placed in various corrosive environments, including those that affect welds.
- Good mechanical properties, its resistance and ductility enabling it to be used for many different applications.
- Great weldability thanks to its low carbon content, reducing the risk of intergranular corrosion after welding.
- Unlike martensitic steels, austenitic steels such as 304L aren’t hardened via heat treatment.
- They may undergo an annealing process to relieve internal stresses and optimise corrosion resistance.
Properties
- High corrosion resistance when placed in various corrosive environments, including those that affect welds.
- Good mechanical properties, its resistance and ductility enabling it to be used for many different applications.
- Great weldability thanks to its low carbon content, reducing the risk of intergranular corrosion after welding.
Standards and Designations
Heat treatment
- Unlike martensitic steels, austenitic steels such as 304L aren’t hardened via heat treatment.
- They may undergo an annealing process to relieve internal stresses and optimise corrosion resistance.
Special advantages
Conclusion
Application
- 304L steel is used in a wide range of applications, from industrial equipment for the food and chemical industries to architecture, automotive components and water treatment tools.
- Its corrosion resistance makes it an ideal choice for harsh environments, such as plumbing systems, heat exchangers and pipes in sectors like oil and gas.
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