China’s Taiyuan Iron & Steel Group (Tisco) has developed a new grade stainless steel TTS443 and achieved the sales of 3,000 tons in a short term.
Since 2006, the price of nickel went up sharply to US$51,800/ton on the LME which increased the cost of stainless steel mills and end users. Therefore, mills are seeking to have a cheaper stainless steel with good anticorrosive characteristics.
TTS443 grade stainless steel has good performance in high corrosion resistance , forming and welding, high temperature resistance, and it can widely use in construction decoration, electrical appliances and auto parts.
Introduction The colour formed when stainless steel is heated, either in a furnace application or in the heat affected zone of welds, is dependent on several factors that are related to the oxidation resistance of the steel. The heat tint or temper colour formed is caused by the progressive thickening of the surface oxide layer and so, as temperature is increased, the colours change. Oxidation resistance of stainless steels However, there are several factors that affect the degree of colour change and so there is no a single table of colour and temperature that represents all cases. The colours formed can only be used as an indication of the temperature to which the steel has been heated. Factors affecting the heat tint colours formed Steel composition The chromium content is the most important single factor affecting oxidation resistance. The higher the chromium, the more heat resistant the steel and so the development of the heat tint colou...
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