T91 Round Steel Direct from Manufacturer, Corrosion-Resistant T91 Alloy Steel Rods in Stock
Guoshuo Supplies' P91 steel is a new type of heat-resistant steel, produced by adding elements such as Ti, Nb, and N to the T9 (9Cr-1Mo) steel base. It is suitable for manufacturing boiler headers and main steam pipelines with metal wall temperatures of ≤600°C. P91 steel boasts high thermal strength properties (three times the thermal strength of P9 steel at 600°C), excellent tensile and welding properties; in addition, it also exhibits good oxidation and corrosion resistance, and has gradually become the primary candidate steel for manufacturing large-capacity ultra-supercritical and ultra-ultra-supercritical power station boilers in our country.
T91 steel is a heat-resistant, non-scaling steel, commonly used in high-temperature and high-pressure conditions in power plant boilers. Equivalent to GB standard 10Cr9Mo1VNb.
Application of T91 steel: Suitable for high-temperature superheater and reheater tubes used in subcritical and supercritical boilers with wall temperatures ≤625°C, as well as high-temperature headers and steam pipelines with wall temperatures ≤600°C. Additionally, it can be used for nuclear power heat exchangers and furnace tubes in oil cracking units.
Physical Properties of T91 alloy steel:
Standard: ASTM A213, ASTM A335
Tensile Strength: ≥585 (MPa)
Yield Strength: ≥415 (MPa)
Tensile Rate: ≥20 (%)
Introduction to the Welding Properties of T91 Alloy Steel Bars
T91 alloy steel can be welded by existing methods, including arc welding with the available TIG (Tungsten Inert Gas) process. The selection of welding rods and flux should aim to maintain consistency or near consistency with the base material's chemical composition, ensuring the welding metal has the same or improved creep and tensile strength as the base material. As this steel is insensitive to thermal cracks, preheating to 150-200°C before welding will not cause cracks, and it can be welded with various steels such as P22 (pearlitic heat-resistant steel), X20CrMoV121 (martensitic heat-resistant steel), and TP304H (austenitic heat-resistant steel).
Welcome to inquire about Shanghai Guosu's selection of anti-corrosion and corrosion-resistant alloy steel - T91.
