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ASTM A250/A250M-95

Historical Revision

Standard Specification for Electric-Resistance-Welded Ferritic Alloy-Steel Boiler and Superheater Tubes

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1.1 This specification covers several grades, designated T1, T1a, T1b, T2, T11, T12 and T22, of minimum-wall-thickness, electric-resistance-welded, carbon-molybdenum and chromium-molybdenum alloy-steel, boiler and superheater tubes.

1.2 The tubing sizes and thicknesses usually furnished to this specification are 1/2 to 5 in. [12.7 to 127 mm] in outside diameter and 0.035 to 0.320 in. [0.9 to 8.1 mm], inclusive, in minimum wall thickness. Tubing having other dimensions may be furnished, provided such tubes comply with all other requirements of this specification.

1.3 Mechanical property requirements do not apply to tubing smaller than 1/8 in. [3.2 mm] in inside diameter or 0.015 in. [0.4 mm] in thickness.

1.4 An optional supplementary requirement is provided and, when desired, shall be so stated in the order.

1.5 The values stated in either inch-pound units or SI units are to be regarded separately as the standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. The inch-pound units shall apply unless the "M" designation of this specification is specified in the order.


SDO ASTM: ASTM International
Document Number A250
Publication Date Jan. 1, 2001
Language en - English
Page Count 4
Revision Level 95
Supercedes
Committee A01.10
Publish Date Document Id Type View
Oct. 1, 2014 A0250_A0250M-05R14 Revision
March 1, 2005 A0250_A0250M-05 Revision
March 1, 2004 A0250_A0250M-04 Revision
Jan. 1, 2001 A0250_A0250M-95 Revision
Oct. 1, 2009 A0250_A0250M-05R09 Reaffirmation
Jan. 1, 2001 A0250_A0250M-95R01 Reaffirmation