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ASME SA213 T11 T12 T22 Seamless Alloy Tubes

Release Tme: 2024-08-22
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ASME SA213, ASTM A213 / A 213M T11, T12, T22, T2, T5, T5b, T5c, T9, T91 is the standard applicable to seamless alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes.
ASME SA213 /SA213M tubes shall be made by the seamless process and shall be either hot-finished or cold finished as specified.
ASME SA213 /SA213M tubing sizes and thicknesses usually furnished to this specification are 1⁄8 in. [3.2 mm] in inside diameter to 5 in. [127 mm] in outside diameter and 0.015 to 0.500 in. [0.4 to 12.7 mm], inclusive, in minimum wall thickness or, if specified in the order, average wall thickness. Tubing having other diameters may be furnished, provided such tubes comply with all other requirements of this specification.


Chemical Composition:

Chemical Components (%)

Grade C Mn P S Si Cr Mo
T11 0.05-0.15 0.30-0.60 ≤0.025 ≤0.035 0.50-1.00 1.00-1.50 0.44-0.65
T12 0.05-0.15 0.30-0.61 ≤0.025 ≤0.035 0.5 0.80-1.25 0.44-0.65
T22 0.05-0.15 0.30-0.60 ≤0.025 ≤0.035 0.5 1.90-2.60 0.87-1.13

Heat Treatment Requirements

Grade UNS Number Heat Treat Type Subcritical Annealing or Tempering Temperature, Min or range °F [°C]
T11 K11597 full or isothermal anneal normalize and temper 1200 [650]
T12 K11562 full or isothermal anneal normalize and temper subcritical anneal 1200 to 1350[650 to 730]
T22 K21590 full or isothermal anneal normalize and temper 1250 [675]
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