Active Standard: A671 / A671M - 13
Table 2 does not adequately describe or provide accurate heat treat parameters for A353 and A553. Minimum tempering temperatures for A516 are unnecessarily high and in fact can create mechanical property issues, and in fact, contradict Note C in the Table which states tempering shall be 1100-1300 as per A20. PWHT temperatures allowed to as high as 1250 is also deleterious to properties and should not be allowed or encouraged. Lastly, Table 1 lists many grades that are no longer produced and can be removed from Table 1 and Table 2. These include A517 Grades C, C, G, J, K, L, M and P; A736 grade (sic) 2. In addition, Table 1 lists grades where class is the appropriate designation for A537 and A736.
Keywordsbolting; chemical analysis; coated; marking on fasteners; plated; Alloy steel bolting materials--specifications; Carbon steel bolting materials--specifications; Carbon steel flanges/fittings/valves/parts--specifications; High-temperature service applications--steel bolting applications; Nuts--specifications;
Ballot Item Approved as A671/A671M-2013 and Pending Publication