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ASTM-A521

ASTM-A521

$40.63

A521-03 Standard Specification for Steel, Closed-Impression Die Forgings for General Industrial Use

Published By Publication Date Number of Pages
ASTM N/A 9
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ASTM A521-03-Reapproved

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

ASTM A521

Scope

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

Note 1ā€”For the definition of a forging, refer General Requirements Specification A 788.

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 CAUntreated, carbon steel forgings,

1.2.2 Grades CC, CC1, and CEAnnealed, normalized and tempered, carbon steel forgings,

1.2.3 Grade CFNormalized and tempered carbon steel forgings,

1.2.4 Grade CF1Double normalized and tempered carbon steel forgings,

1.2.5 Grade CGQuenched and tempered, or normalized, quenched and tempered carbon steel forgings,

1.2.6 Grade AAAnnealed, 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 AHNormalized, quenched, and tempered alloy steel forgings.

1.3 The values stated in inch-pound units are to be regarded as the standard.

Keywords

alloy steel; carbon steel; closed die; forging tolerances; heat treated; impression die; Steel Forgings

ICS Code

ICS Number Code 77.140.85 (Iron and steel forgings)

DOI: 10.1520/A0521-03

PDF Catalog

PDF Pages PDF Title
1 Scope
Referenced Documents
Ordering Information and General Requirements
2 Forging Manufacture
Chemical Requirements
Metallurgical Requirements
Dimensional Tolerances
Tensile Properties
Number of Tests and Orientation
Test Specimen
Cleaning
Keywords
3 TABLE 1
4 X1. FORGINGS PRODUCED ON HAMMERS AND PRESSES
X1.1 Units of Measure
X1.2 Length and Width Tolerances
X1.3 Die Wear Tolerances
TABLE X1.1
TABLE X1.2
5 X1.4 Die Closure Tolerances
X1.5 Match Tolerances
X1.6 Flash Extension Tolerances
X1.7 Straightness Tolerances
TABLE X1.3
6 X1.8 Surface Tolerances
TABLE X1.4
TABLE X1.5
TABLE X1.6
7 X1.9 Draft Angle Tolerances
X1.10 Finish Allowances for Machining
X2. FORGINGS PRODUCED ON FORGING MACHINES (UPSETTERS)
X2.1 Length Tolerances
X2.2 Flange Tolerances
X2.3 Diameter Tolerances
TABLE X1.7
TABLE X1.8
TABLE X2.1
8 X2.4 Match Tolerances
X2.5 Concentricity Tolerances
X2.6 Straightness Tolerances
X2.7 Draft Angle Tolerances
X2.8 Radii Tolerances
X2.9 Surface Tolerances
X2.10 Finish Allowances for Machining
TABLE X2.2
TABLE X2.3
9 TABLE X2.4
TABLE X2.5
TABLE X2.6

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