ASTM A739-90A(2016) Standard Specification for Steel Bars, Alloy, Hot-Wrought, for Elevated Temperature or Pressure-Containing Parts, or Both
: Brown Technical Book Store
1.1 This specification2 covers hot-wrought, ferritic alloy steel bars for elevated temperature or pressure-containing parts suitable for fusion welding or both. 1.2 The bars are furnished in the following grades: Grade B 11: 1.25 % chromium, 0.55 % molybdenum Grade B 22: 2.25 % chromium, 1.00 % molybdenum 1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.