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  • ASTM
    A668/A668M-13 Standard Specification for Steel Forgings, Carbon and Alloy, for General Industrial Use
    Edition: 2013
    $103.58
    Unlimited Users per year

Description of ASTM-A668 2013

ASTM A668/A668M-13

Historical Standard: ASTM A668/A668M-13 Standard Specification for Steel Forgings, Carbon and Alloy, for General Industrial Use

SUPERSEDED (see Active link, below)




ASTM A668 / A668M

1. Scope

1.1 This specification covers untreated and heat-treated carbon and alloy steel forgings for general industrial use. Other ASTM specifications for forgings are available for specific applications such as pressure vessels, railroad use, turbine generators, gearing, and others involving special temperature requirements.

1.2 Hot-rolled or cold finished bars are not within the scope of this specification.

1.3 Six classes of carbon steel and seven classes of alloy steel forgings are listed (see Section 7 ), which indicates their required heat treatments, as well as mechanical properties.

1.4 Provision, with the suffix H for certification and marking, for the supply of forgings after hardness testing only.

1.5 Supplementary requirements, including those in Specification A788/A788M , of an optional nature are provided. These shall apply only when specified by the purchaser.

1.6 Appendix X1 lists the current classes corresponding to the various classes of Specifications A235, A237, and A243, which have been superseded by this specification.

1.7 The values stated in either SI units or inch-pound units are to be regarded separately as standard; within the text and tables, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.

1.8 Unless the order specifies the applicable 'M' specification, the forgings shall be furnished to the inch-pound units.


2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

A275/A275M Practice for Magnetic Particle Examination of Steel Forgings

A370 Test Methods and Definitions for Mechanical Testing of Steel Products

A388/A388M Practice for Ultrasonic Examination of Steel Forgings

A788/A788M Specification for Steel Forgings, General Requirements

E381 Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings


Keywords

alloy steel forgings; carbon steel forgings; general industrial applications; heat treatment classifications; strength classifications ;


ICS Code

ICS Number Code 77.140.85 (Iron and steel forgings)


DOI: 10.1520/A0668_A0668M

ASTM International is a member of CrossRef.


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