409L Stainless steel sheet manufacturer
The 409L stainless steel has strong resistance to corrosion, high temperature and fatigue, and can realize the life and lightweight of exhaust system components.
With its excellent corrosion resistance, 409L stainless steel is suitable for prolonging the life of automobiles and lightening the weight of automobiles. As an environmentally friendly material for recycling, GM, Ford, Volkswagen, DaimlerChrysler and other major automobile manufacturers adopt 100% stainless steel in their exhaust systems.
Equivalent Material of 409L Stainless Steel Sheet
| Grade | Euronorm | Japanese JIS | ISO |
| No. | |||
| 409L | 1.4512 | SUH409L | X2CrTi12 |
Standard Specification Of 409L Plate
| Thickness | 4mm-100mm |
| Width | 1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc |
| Length | 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc |
| Surface | 2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, checkered, embossed, hair line, sand blast, Brush, etching, etc |
| Finish | Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated) |
| Form | Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Flange) etc. |
(1) When 409L steel crystallizes, the solid-liquid two-phase zone is very small, less than 30℃;
(2) There is almost no γ phase at high temperature.
Therefore, when 409L steel begins to crystallize after casting, the liquid phase has a large degree of undercooling due to direct contact with the surface of the crystallizer. At the same time, the surface of the crystallizer promotes non-spontaneous nucleation. Therefore, the nucleation rate of the liquid phase is high, forming fine equiaxed grains on the surface.
The formation rate of fine equiaxed grains on the surface is very fast, and the titanium carbide is too short to precipitate at this time.
After the formation of fine equiaxed grains, columnar grains are formed in ordinary steels, but there is no columnar grains in 409L steel.
The columnar grains of 409L steel are not easy to grow forward because of the narrow temperature range of liquid-solid two-phase region and the small subcooling zone during crystallization.
409L steel from high temperature to low temperature almost no α→γ phase transformation, so the grain is easy to grow up, there are thick ferrite structure, low strength, in continuous casting, after the slab is cut up, prone to bend phenomenon, affect the normal production.
The main problem during crystallization of 409L steel is the degradation of properties caused by coarse grain size≥192HB
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