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.
Hi, You are correct, Minimum refers to the one cycle for which this part will expose until final work shop PWHT. hence mill test certificate shall include this. Max. SPWHT, refers to additional cycles of heat treatment that are reserved for future repairs during equipment lifetime. Again, these simulated no. Of cycles shall be specified in MTC. The idea is we need to make sure that steel mechanical properties are not compromised upon exposure to multiple repairs (i e 4 cycles in your case). One could say, if steel is subjected to 4 cycles and is ok, then it should by defacto be good for one cycle, yet, this is wrong assumption cause mechanical problems and microstructure of materials varies accordingly based on no. Of cycles for which material will expose. This is apparent in alloy steel and especially for impact test values as an example. In your case, this forged CS with properties before PWHT can be understood to be " as forged" condition (i.e. Wit...
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