ASTM A730-93(1999)
Standard Specification for Forgings, Carbon and Alloy Steel, for Railway Use
- Standard No.
- ASTM A730-93(1999)
- Release Date
- 1970
- Published By
- /
- Status
- 2004-01
- Latest
- ASTM A730-93(1999)
- Scope
- 1.1 This specification covers eight grades of untreated and heat-treated carbon steel forgings and six grades of heat-treated alloy steel forgings for railway use. NOTE 1—It is recommended, when semi-finished steel is desired to process these forgings, that the latest issue of ASTM Specification A 711, for Carbon and Alloy Steel Blooms, Billets, and Slabs for Forging,2 be used. This will enable the forger to select semi-finished material of such chemistry as he desires. NOTE 2—Railway axles are covered by Specification A 21. 1.2 The grades of carbon steel forgings and the purposes for which they are frequently used are as follows, the choice depending on design and stress or service to be imposed: 1.2.1 Grade A is untreated and is mostly used for drop forgings and parts of minor importance, and those which are to be case hardened. 1.2.2 Grade B is untreated and is used for a general group of miscellaneous ordinary forgings where heat treatment is not deemed necessary. 1.2.3 Grade C is annealed, normalized, or normalized and tempered. 1.2.4 Grade D is annealed, normalized, or normalized and tempered. 1.2.5 Grade E is normalized and tempered. 1.2.6 Grade F is double normalized and tempered. 1.2.7 Grade G is quenched and tempered. 1.2.8 Grade H is normalized, quenched, and tempered. 1.2.9 Grades E, F, G, and H forgings are used in high-duty service on locomotives, cars, and other equipment. 1.3 The grades of alloy steel forgings are as follows: 1.3.1 Grades I, J, and K are normalized and tempered. 1.3.2 Grades L, M, and N are normalized, quenched, and tempered, and are used in heavy-duty service on locomotives, cars, and special equipment. NOTE 3—The forgings described above were formerly designated as follows: Current Grade Former Designation and Grade A A 236, A B A 236, B C A 236, C D A 236, D E A 236, E F A 236, F G A 236, G H A 236, H I A 238, A J A 238, B K A 238, C L A 238, D M A 238, E N A 238, F 1.4 Supplementary Requirements (Sections S1 to S5) of an optional nature are provided. These shall apply only when specified by the purchaser. 1.5 The values stated in inch-pound units are to be regarded as the standard.
ASTM A730-93(1999) Referenced Document
- ASTM A21 Standard Specification for Carbon Steel Axles, Non-Heat-Treated and Heat-Treated, for Railway Use
- ASTM A370 Standard Test Methods and Definitions for Mechanical Testing of Steel Products*， 2001-12-10 Update
- ASTM A711 Standard Specification for Steel Forging Stock*， 1992-04-20 Update
- ASTM E112 Standard Test Methods for Determining Average Grain Size*， 1996-04-20 Update
- ASTM E381 Standard Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings*， 1998-04-20 Update
ASTM A730-93(1999) history
- 1970 ASTM A730-93(1999) Standard Specification for Forgings, Carbon and Alloy Steel, for Railway Use
