ASTM A209 ASME SA209 Grade T1 Alloy Steel Boiler And Superheater Tubes Standard: ASTM A209 / A209M Standard Specification for Seamless Carbon-Molybdenum Alloy-Steel Boiler and Superheater Tubes ASTM A209 Grade T1 Seamless Carbon-Molybdenum Alloy-Steel Boiler and Superheater Tubes covers tubes 1 ⁄ 2 to 5 in. [12.7 to 127mm] inclusive, in outside diameter and 0.035 to 0.500 in. [0.9 to 12.7 mm], inclusive, in minimum wall thickness.   ASTM A209 ASME SA209 Grade T1 Alloy Steel Boiler and Superheater Tubes Quick Details Manufacture: Seamless process ,Hot-finished or Cold-finished Wall thickness(WT): 0.9 mm——12.7 mm. Outer diameter (OD): 12.7 mm——127 mm Length: 6M or specified length as required. Ends: Plain End, Beveled End, Treaded HeatTreatment: Hot-finished tubes shall be heat treated at a temperature of 1200 °F [650 °C] or higher. Cold-finished tubes shall, after the final cold finishing, be heat treated at a temperature of 1200 °F [650 °C] or higher, or tubing may be furnished in the full-annealed, isothermal annealed, or normalized and tempered condition.   Chemical Composition Of ASTM A209 ASME SA209 Grade T1 Alloy Steel Boiler And Superheater Tubes

Element	Composition, %
	Grade T1
Carbon	0.10–0.20
Manganese	0.30–0.80
Phosphorus, max	0.025
Sulfur, max	0.025
Silicon	0.10–0.50
Molybdenum	0.44–0.65

  Mechanical Properties Of ASTM A209 ASME SA209 Grade T1 Alloy Steel Boiler And Superheater Tubes

Grade T1
Tensile strength, min, ksi [MPa]	55 [380]
Yield strength, min, ksi [MPa]	30 [205]
Elongation in 2 in. or 50 mm, min, %	30
For longitudinal strip tests a deduction shall be made for each 1 ⁄ 32 -in. [0.8-mm] decrease in wall thickness below 5 ⁄ 1 6 in. [8 mm] from the basic minimum elongation of the following percentage	1.50 A
When standard round 2-in. or 50-mm gage length or smaller proportionally sized specimen with the gage length equal to 4D (four times the diameter) is used	22
Brinell Hardness Number (Tubes 0.200 in. [5.1 mm] and over in Wall Thickness), HBW	146
Rockwell Hardness Number (Tubes less than 0.200 in. [5.1 mm] in Wall Thickness), HRB	80

  Tests of ASTM A209 ASME SA209 Grade T1 Alloy Steel Boiler And Superheater Tubes Tension Test—One tension test shall be made on a specimen for lots of not more than 50 tubes. Tension tests shall be made on specimens from two tubes for lots of more than 50 tubes Flattening Test—One flattening test shall be made on specimens from each end ofone finished tube. Flaring Test—One flaring test shall be made on specimens from each end ofone finished tube. Hardness Test—Brinell or Rockwell hardness tests shall be made on specimens from two tubes from each lot.