Alloy Steel T91 Tubes is rich in cobalt and shares many of the wear characteristics of the cobalt – based alloy. The Alloy Steel T91 Seamless Tubes can be solution treated at 1065 Degree C (i.e. 1950 Degree F) and then it is quenched in normal conditions that require product forms to be furnished and used. In cases bright annealed product forms such as strip and sheet are required, the Alloy Steel ASME SA213 T91 Welded Tubes can be solution treated at 1149 Degree C (i.e. 2100 Degree F) and then it is cooled in a hydrogen atmosphere so as to avoid oxidation of the bright surface.
Industry users like the resistance of Alloy Steel Round T91 Tubes to a wide range of organic acids and the resistance to chloride – induced stress – corrosion cracking. AS EFW T91 Tubes offers improved resistance to heat zone corrosion attack and to stress corrosion cracking when compared to other alloys. Our Dealers and Distributors of SA213 T91 Tubing in Russia, France, Italy, Canada, UK, USA, Sweden, Israel, Germany, UAE, Malaysia. At the same time, by controling of carbon and nitrogen and careful selection of molybdenum, chromium and tungsten levels, corrosion properties of many of the nickel – based alloys, such as Alloy Steel T91 ERW Tubes, have been attained. The Alloy Steel ASTM A213 T91 Square Tubes resists the formation of grain boundary carbide precipitates in the weld heat – affected zone, making it suitable for most chemical process applications in the as-welded condition.