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Kencotube is renowned manufacturer & exporter of high quality ASTM A213 Gr T91 Alloy Steel Seamless Tubes, which is added with copper to improve its resistance to strong reducing acids, such as sulphuric acid. ASTM A213 Gr T91 Alloy Steel Tubes contains high amounts of expensive ingredients, such as molybdenum and nickel, where the grade is non-magnetic in all conditions and has excellent formability and weldability. The austenitic structure gives these ASME SA213 Gr T91 Alloy Steel Tubes admirable toughness, as well down to cryogenic temp. ASME SA213 Gr T91 Alloy Steel Seamless Tubes is a heat resistant, titanium stabilized, austenitic alloy that's commonly used for service in the 1000 Degree F – 1600 Degree F temperature range. ASTM A213 Alloy Steel Gr T91 Seamless Tubes is primarily used in applications that involve continuous and intermittent service temperatures within the carbide precipitation range of 800 Degree F – 1500 Degree F.
These ASTM A213 Alloy Steel Gr T91 Tubes have chemical and mechanical properties complying specifications, where such dual certified product does not meet specification and may be unacceptable for high temperature applications. ASME SA213 Alloy Steel Gr T91 Seamless Tubes has higher strength at elevated temperatures and is sometimes used for structural and pressure-containing applications at temperatures above about 500 Degree C. ASME SA213 Alloy Steel Gr T91 Tubes is utilized primarily for its high yield to weight ratio, where when it is to be welded, it is presupposed that a welding procedure suitable for the grade of steel and intended use or service will be utilized.
|Specifications||ASTM A 213 / ASME SA 213|
|Size||1/8"NB TO 30"NB IN|
|Schedule||SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS, UPTO 4″ WALL THICK|
|Length||Single Random, Double Random & Required Length, Custom Size – 12 Meter lengths|
|Form||Round, Square, Rectangular, Hydraulic Etc.|
|C %||Mn %||P %||S %||Si %||Cr %||Mo %||V %||N %||Ni %||Al %||Nb %|
|0.3-0.6||0.02 max||0.01 max||0.2-0.5||8.0-9.5||0.85-1.05||0.18-
|0.03-0.07||0.4 max||0.04 max||0.06-0.10|
|Grade||Tensile Strength, MPa||Yield Strength, MPa||Elongation, %||Hardness, HB|
|T91||585 min||415 min||20 min||250 max|
|Outside Diameter||OD Tolerance||WT Tolerance||Ovality Tolerance||Cut Length Tolerance|
|OD≤ 12, 7 mm||± 0, 13 mm||± 15 %||–||+ 3, 18 mm, – 0 mm|
|12, 7 mm < OD ≤ 38, 1 mm||± 0, 13 mm||± 10 %||max, 1, 65 mm||+ 3, 18 mm, – 0 mm|
|38, 1 mm < OD ≤ 88, 9 mm||± 0, 25 mm||± 10 %||max, 2, 41 mm||+ 4, 76 mm, – 0 mm|
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