||Separate Standards for Heat Treating Castings and Wrought Alloys
Will Replace B 597
To meet changing heat-treating process and product requirements,
two new standards were developed to replace an industry staple,
ASTM B 597, Standard Practice for Heat Treatment of Aluminum Alloys,
which originated in 1974. Available next month from ASTM Committee
B07 on Light Metals and Alloys, are:
B 917, Standard Practice for Heat Treatment of Aluminum-Alloy Castings
from All Processes; and
B 918, Standard Practice for Heat Treatment of Wrought Aluminum Alloys.
Approved June 10, ASTM Standard Practice B 917 was developed by
metallurgists and casting engineers in Subcommittee B07.01 on
Aluminum Alloy Ingots and Castings. ASTM B 917 is a new heat
treat specification devoted entirely to the heat treatment of
aluminum castings, said Harold D. Bushfield, senior specification
metallurgist, Alcoa Inc., Alcoa Center, Pa.
Bushfield, who co-chaired the development of B 917 with Jaswant
G. Patel, technical director, Fort Wayne Foundry Corp., Fort Wayne,
Ind., described advantages of the new standard: ASTM B 917 is
specific to castings, therefore it is focused on aluminum alloys
used in the casting industry. It is easier to use as it contains
only information pertinent to the heat treatment of castings.
In addition it contains more detail relevant to the heat treatment
of castings than did its predecessor.
Content has been updated to include currently available alloys
and tempers said Milton W. Milner, who drafted ASTM Standard
Practice B 918. Approved on July 10, Milner said the document
will provide purchasers/ users, materials and metallurgical engineers,
quality assurance/systems auditors, and pyrometry personnel with:
Clarification that it is intended for wrought-aluminum heat
treating of materials for general purpose,
An overhaul, expansion, and upgrading of critical
sections defining pyrometry and furnace survey requirements (that
verify furnace temperature uniformity
capability) to reflect current industry practice and
Updating of a critical section on quenching that
accompanies solution heat treatment;
Updating and clarification of various quality assurance requirements
including minimum retention time
for records; and
Updating and clarification of required process
Milner, a metallurgical engineer and manager, Technical Standards
and Quality Systems, Alcoa Inc., Alcoa Center, Pa., created the
standard with metallurgical engineers in Subcommittee B07.03 on
Aluminum Alloy Wrought Products.
For information about B 918, contact Milton W. Milner, Metallurgy & Quality Systems, Alcoa Inc., Alcoa Center, Pa.
(phone: 724/337-2074). Comments about B 917 may be directed to
Harold D. Bushfield, Alcoa Technical Center, Alcoa Center, Pa. (phone: 724/337-2960),
or Jaswant G. Patel, Fort Wayne Foundry Corp., Fort Wayne, Ind. (phone: 219/244-5700).
Committee B07 meets Nov. 6-7 in Dallas, Texas. For meeting or
membership details, contact Dan Schultz, manager, ASTM Technical Committee Operations (phone: 610/832-9716).
Copyright 2001, ASTM