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ASTM-A521:2011 Edition

ASTM-A521:2011 Edition

$40.63

A521/A521M-06(2011) Standard Specification for Steel, Closed-Impression Die Forgings for General Industrial Use

Published By Publication Date Number of Pages
ASTM 2011 9
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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.

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
3 Keywords
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
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 X2.1
TABLE X2.2
9 TABLE X2.4
TABLE X2.3
TABLE X2.5
TABLE X2.6

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