ASME SA213 T9 Seamless Alloy Steel Tubes
ASME SA213M / SA213 T9 is the standard applicable to Seamless Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes.
ASME SA213M / SA213 tubes shall be made by the seamless process and shall be either hot-finished or cold finished as specified.
ASME SA213M / SA213 covers several grades of minimum- wall-thickness, seamless, alloy-steel, boiler and superheater tubes.
ASME SA213M / SA213 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.
Standard: ASME SA213M / SA213
Description Name: ASTM A213 / ASME SA213 T9 Seamless tubes, ASME SA213M / SA213 T9 Seamless tubes, ASTM A213 / ASME SA213 T91 Seamless tubes, ASTM A213 / ASME SA213 T5 Seamless alloy tubes, ASTM A213 T5b Superheater tubes, ASTM A213 T9 Superheater tubes, ASTM A213 T91 Superheater tubes, ASTM A213 T5 boiler tubes, ASTM A213 T5b boiler tubes, ASTM A213 T9 boiler tubes, ASTM A213 T91 boiler tubes, ASTM A213 / ASME SA213 T2 Seamless tubes, ASTM A213 / ASME SA213 T2 Seamless alloy tubes, ASTM A213 T2 Superheater tubes, ASTM A213 T2 boiler tubes, Seamless superheater tubes, Boiler tubes.
Size: 3.2 to 127 mm.
Wall Thickness: 0.4 to 12.7mm
Shape: Round
Length: Single random length/ Double random length or as customer’s actual request
Grade: T9
Referenced Documents:
ASTM A 1016/A 1016M Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stain- less Steel Tubes
ASME SA213 T9 Seamless Alloy Steel Tubes
Chemical Composition:
| Chemical Components (%) | ||||||||||||
| Grade | C | Mn | P | S | Si | Cr | Mo | V | Nb | N | Al | others |
| T9 | 0.15 | 0.30-0.60 | ≤0.025 | ≤0.025 | 0.25-1.0 | 8.0-10.0 | 0.90-1.10 | |||||
Heat Treatment Requirements:
| Grade | UNS Number | Heat Treat Type | Austenitizing / Solutioning Temperature, min or range ºF (ºC) | Subcritical Annealing or Tempering Temperature, Min or range ºF (ºC) |
| T9 | K50400 | full or isothermal anneal normalize and temper | … | 1250 (675) |
Tensile Requirements and Hardness:
| Mechanical properties | ||||
| Grade | Tensile | Yield | Elongation | Hardness |
| Strength (Mpa) | Strength (Mpa) | (%) | ||
| T9 | ≥415 | ≥205 | ≥30 | ≤89HRB |
- Flattening Test – One flattening test shall be made on specimens from each end of one finished tube, not the one used for the flaring test, from each lot.
- Flaring Test – One flaring test shall be made on specimens from each end of one finished tube, not the one used for the flattening test, from each lot.
- Hydrostatic or Nondestructive Electric Test – Each tube shall be subjected to the nondestructive electric test or the hydrostatic test. The type of test to be used shall be at the option of the manufacturer, unless otherwise specified in the purchase order.
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