1.1 This specification 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.
