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  • ASTM
    A521/A521M-06(2011) Standard Specification for Steel, Closed-Impression Die Forgings for General Industrial Use
    Edition: 2011
    $93.60
    Unlimited Users per year

Description of ASTM-A521 2011

ASTM A521 / A521M - 06(2011)

Standard Specification for Steel, Closed-Impression Die Forgings for General Industrial Use

Active Standard ASTM A521 / A521M | Developed by Subcommittee: A01.06

Book of Standards Volume: 01.05




ASTM A521 / A521M

Abstract

This specification covers untreated and heat-treated steel closed-impression die forgings for general industrial use. The Grades of forgings are as follows: Grades CA, CC, CC1, CE, CF, CF1, CG, AA, AB, AC, AD, AE, AF, AG, and AH. These Grades shall be annealed, normalized, tempered and quenched. The manufactured forgings shall be free from harmful surface discontinuities, roughness, excessive scale, and fins which are indications of overheating, burning, or other injurious conditions. A tensile test shall be done in order to determine the yield strength of the heat-treated forgings. The forgings shall be furnished in a scale-free condition and may be cleaned by acid pickling, grit blasting, sand blasting, or other abrasive method.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

1. Scope

1.1 This specification covers untreated and heat-treated steel, closed-impression die forgings (Note 1) for general industrial use.

Note 1For the definition of a forging, refer General Requirements Specification A788/A788M .

1.2 The Grades of forgings are as follows, the choice depending on design and stress or service to be imposed:

1.2.1 Grade CA Untreated, carbon steel forgings,

1.2.2 Grades CC, CC1, and CE Annealed, normalized and tempered, carbon steel forgings,

1.2.3 Grade CF Normalized and tempered carbon steel forgings,

1.2.4 Grade CF1 Double normalized and tempered carbon steel forgings,

1.2.5 Grade CG Quenched and tempered, or normalized, quenched and tempered carbon steel forgings,

1.2.6 Grade AA Annealed, normalized, or normalized and tempered alloy steel forgings,

1.2.7 Grades AB and AC Normalized and tempered alloy steel forgings, and

1.2.8 Grades AD, AE, AF, AG, and AH Normalized, quenched, and tempered alloy steel forgings.

1.3 Unless the order specifies the applicable M specification designation, the forgings shall be furnished with the inch-pound units.

1.4 The values stated in either inch-pound units or SI (metric) 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 are not exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.


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

A29/A29M Specification for Steel Bars, Carbon and Alloy, Hot-Wrought, General Requirements for

A275/A275M Practice for Magnetic Particle Examination of Steel Forgings

A322 Specification for Steel Bars, Alloy, Standard Grades

A370 Test Methods and Definitions for Mechanical Testing of Steel Products

A388/A388M Practice for Ultrasonic Examination of Steel Forgings

A576 Specification for Steel Bars, Carbon, Hot-Wrought, Special Quality

A788/A788M Specification for Steel Forgings, General Requirements

A921/A921M Specification for Steel Bars, Microalloy, Hot-Wrought, Special Quality, for Subsequent Hot Forging

E3 Guide for Preparation of Metallographic Specimens

E45 Test Methods for Determining the Inclusion Content of Steel

E94 Guide for Radiographic Examination

E112 Test Methods for Determining Average Grain Size

E340 Test Method for Macroetching Metals and Alloys

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

E407 Practice for Microetching Metals and Alloys


Keywords

alloy steel; carbon steel; closed die; forging tolerances; heat treated; impression die; Steel Forgings; Closed-impression die forgings; Die forgings--specifications; Heat-treated steel--specifications; Steel forgings--specifications; Untreated die forgings;


ICS Code

ICS Number Code 77.140.85 (Iron and steel forgings)


DOI: 10.1520/A0521_A0521M-06R11

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ASTM A521 / A521M

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