BOOKS IN EUROPEAN LANGUAGES
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7 I. «0.^2-1924 AMERICAN SOCIETY FOR TESTING MATERIALS. JTufl
.V, 1315 SPRUCE STREET, PHILADELPHIA, PA.
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' I 1938 ^. I npr/rcpr
CARBON-STEEL AND ALLOY-STEEL FORGINGS.
These specificati^/sl £rF"'isu"*& under the fixed designation A 1 'X number indicates theTeftrf^oAOflj *^"ption as standard, or in the s of revision, the year of last revisions ' Jf
Adopted, 1901; Revised, 1905, 1914, 1916, 1918, 1921.
1. (a) These specifications cover the various classes of "bon-steel and alloy-steel forgings now commonly used and t covered by other existing specifications of the American ciety for Testing Materials.
(b) The purposes for which these classes are frequently ;d are as follows:
Class A, for forgings which may be welded or case-hardened;
Class B, for mild-steel forgings for structural purposes, ■ minor ship fittings, etc.;
Class C, for mild-steel forgings for structural purposes • ships, etc.;
Classes D, E, F, G, H and I, for various machinery forges, choice depending upon design and upon the stresses and •vices to be imposed.
Classes K, L and M, for various machinery forgings, choice pending upon design and upon the stresses and services to be posed, and upon the character of machining operations to be ne.
• -2. The 1 UK-esses: open
hall be made by either or both the following j.'L-n-nearth or electric furnace.
3. A sufficient discard shall be made from each ingot to secure freedom from injurious piping and undue segregation.
4. The manufacturer and the purchaser shall agree upon forgings on which a prolongation for test purposes shall be provided.
5. If boring is specified,. the diameter of the hole shall Boring.
Prolongati for Tests.