Cold Rolled 443 Stainless Steel Sheet 2B Finish 1219mm Width X 2438mm Length
Stainless steel 443, which is a kind of ferritic stainless steel, is now generally used to replace 304. Its rust resistance and processing performance are comparable to those of 304. It is currently widely promoted in the fields of electrical appliances, utensils, kitchen equipment, elevators, and oven making.
The chemical composition and mechanical properties of stainless steel 443:
Carbon [C] = 0.01%, Chromium [Cr] = 21.0%, Titanium [Ti] = 0.3%,
Yield strength σ0.2 = 305Mpa,
Tensile strength σb = 483Mpa,
Elongation El = 31%.
443 stainless steel substrate pitting resistance index is 300mv, comparable to 304 stainless steel, high thermal stability, good tensile properties.
Material properties are superior to ordinary ferritic stainless steel:
443 stainless steel improves corrosion resistance by increasing Cr, lowering C, and adding Ti. Improved pitting resistance: increasing the Cr content increases the corrosion resistance of the stainless steel substrate, and increasing Ti improves its pitting resistance. The increase of Cr content increases the electrode potential of the stainless steel matrix. At the same time, Ti preferentially forms a stable compound with C in stainless steel, inhibits the combination of C and Cr in stainless steel, inhibits the appearance of Cr-depleted point and improves its pitting resistance.
The heat service life is improved: Ti element preferentially forms C compound, which inhibits the enrichment of C to the grain boundary under the heated condition, improves the thermal service life of the stainless steel, improves the intergranular corrosion resistance of the stainless steel, and improves the thermal stability of the stainless steel.
443 is widely used in architectural decoration, home appliance products, vehicle parts, and is a new type of high corrosion resistant multifunctional material because of its excellent corrosion resistance, formability, weldability and high temperature performance. It is an ideal material to replace 304 stainless steel.
Taigang adopts hot water as the main raw material, and combines with the advanced rolling production line through refining outside the furnace. It first introduces 443 materials with excellent comprehensive properties such as economy, corrosion resistance and formability in the country. This material can replace 304 in a wide range of fields. A new type of versatile, versatile material. As of the end of October, a total of 8727 tons of 443 was developed.
With the sharp increase in nickel prices, the cost of nickel-based stainless steel has increased significantly, and the price of 304 stainless steel, which is the most used, has also increased rapidly. Therefore, it is imperative to develop low-cost ferritic stainless steel containing no nickel instead of 304 stainless steel.
Faced with this market situation, TISCO began research and development of low-cost ferritic stainless steel instead of 304 in the second half of last year. In view of the shortcomings of poor workability and weldability of ferritic stainless steel, these defects of ferritic stainless steel are improved from the design and process technology of steel components, so that the corrosion resistance, processing properties and welding properties of ferritic stainless steel are achieved. At a level equivalent to 304, a new ferritic stainless steel
443 steel was designed to replace 304 stainless steel. Since March of this year, Taigang has tried to replace the low-cost ferritic stainless steel 443 of 304. After careful production and strict organization, the final cold-rolled products have good surface quality, mechanical and processing and welding performance equivalent to 304. . After trial use by users, the processing and welding performance of 443 ferritic stainless steel produced by TISCO has reached or exceeded the advanced level in foreign countries.
In the production process, the steel has a high chromium content and is easily broken, and the hot rolled surface is rough. Faced with these problems, TISCO has adopted a series of technological measures to solve these problems in a timely manner. The mass production of TTS443 has been realized since May and is immediately available to the market.
443 is widely used in architectural decoration, home appliance products, vehicle parts, and is a new type of high corrosion resistant multifunctional material because of its excellent corrosion resistance, formability, weldability and high temperature performance. It is an ideal material to replace 304 stainless steel