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1.1 This specification covers cast carbon and alloy steel ingots and strand castings, semi-wrought ingots and strand castings and rolled or forged blooms, billets, and slabs for forging.
1.2 Blooms, billets, and slabs are semi-finished steel products, hot rolled or forged to approximate cross-sectional dimensions. Blooms and billets may be square, round, octagonal, or rectangular in section; slabs are rectangular. Although no invariable rule prevails between the terms blooms and billets, and they are frequently used interchangeably, the following size distinctions are in general use.
1.2.1 Blooms—Cross-sectional area greater than 36 in.2 (232 cm2 ).
1.2.2 Billets—Maximum cross-sectional area 36 in.2 (232 cm2).
1.2.3 Slabs—Minimum thickness, 11/2 in. (38.0 mm); width, more than twice the thickness; and generally a cross-sectional area of not less than 16 in. 2 (103 cm2).
1.2.4 Ingots either top or bottom poured or secondary remelted are covered.
1.2.5 Strand castings with or without additional reduction are covered.
1.3 Supplementary requirements (S1 to S19) of an optional nature are provided. They shall apply only when specified by the purchaser.
1.4 The values stated in inch-pound units are to be regarded as the standard.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
A29/A29M Specification for Steel Bars, Carbon and Alloy, Hot-Wrought and Cold Finished, General Requirements for
A275/A275M Test Method for Magnetic Particle Examination of Steel Forgings
A388/A388M Practice for Ultrasonic Examination of Heavy Steel Forgings
A788 Specification for Steel Forgings, General Requirements
E45 Test Methods for Determining the Inclusion Content of Steel
E112 Test Methods for Determining the Average Grain Size
E381 Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings
ICS Number Code 77.140.85 (Iron and steel forgings)
UNSPSC Code 31132100(Steel forgings)
ASTM A711-92(2001), Standard Specification for Steel Forging Stock, ASTM International, West Conshohocken, PA, 1992, www.astm.orgBack to Top