Stainless steel, acid-resistant steel and heat-resistant steel

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Equal tees 1.4307/304L

Stainless steel 1.4307
Type: austenitic
AISI: 304L / DIN: X2CrNi18-9

Composition: Stainless steel 1.4307 is a low carbon variant of the 304 grade (1.4301). The 'L' in 304L stands for "low carbon" and indicates that this variant has a lower carbon content, which enhances its weldability and reduces the risk of corrosion following welding or stress relieving. It typically contains 18% chromium and 8% nickel, along with small amounts of carbon, manganese, silicon, phosphorus, sulfur, and possibly molybdenum and nitrogen.

Corrosion Resistance: The lower carbon content in 1.4307 helps in minimizing chromium carbide precipitation and improves resistance to intergranular corrosion. It is particularly effective in acidic environments, and is also resistant to a range of other corrosive substances.

Mechanical Properties: This grade of stainless steel maintains good strength and toughness at cryogenic temperatures. It is also characterized by good formability and ductility.

Weldability: AISI 304L (1.4307) is known for its excellent weldability, with all standard welding methods suitable for this material. The lower carbon content significantly reduces the risk of weld decay, making it a good choice for welded components.

Applications: Due to its resistance to corrosion, ease of fabrication, and hygienic surface finish, 1.4307 is widely used in a variety of applications including kitchen equipment, pharmaceutical equipment, chemical containers, architectural panelling, and in the brewing, dairy, and food industries.

Machinability: While not as easy to machine as some of the other stainless steel grades, 1.4307 can be machined using standard techniques. The machining process can be enhanced with the use of chip breakers, coolants, and sharp tools.

In summary, stainless steel 1.4307 (AISI 304L) is a highly versatile, low carbon stainless steel grade known for its good weldability, excellent corrosion resistance, and wide range of applications in both industrial and domestic settings.

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