Standard Historical Last Updated: Aug 16, 2017 Track Document
ASTM A508/A508M-04

Standard Specification for Quenched and Tempered Vacuum-Treated Carbon and Alloy Steel Forgings for Pressure Vessels

Standard Specification for Quenched and Tempered Vacuum-Treated Carbon and Alloy Steel Forgings for Pressure Vessels A0508_A0508M-04 ASTM|A0508_A0508M-04|en-US Standard Specification for Quenched and Tempered Vacuum-Treated Carbon and Alloy Steel Forgings for Pressure Vessels Standard new BOS Vol. 01.05 Committee A01
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Scope

1.1 This specification covers quenched and tempered vacuum treated carbon and alloy steel forgings for pressure vessels such as those used in reactor systems. Specifically, it covers forgings for vessel closures, shells, flanges, tube sheets, rings, heads, and similar parts.

1.2 All grades are considered weldable under proper conditions. Welding technique is of fundamental importance, and it is presupposed that welding procedure and inspection will be in accordance with approved methods for the grade of material used.

1.3 The values stated in either inch-pound units or SI (metric) units are to be regarded separately as standards. Within the text and the tables, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independent of the other. Combining values from the two systems may result in nonconformance with the specification.

1.4 Unless the order specifies the applicable "M" specification designation, the material shall be furnished to the inch-pound units.

Note 1—Grades 1 and 1A are composed of different chemistries but have the same mechanical requirements.

Note 2—Designations have been changed as follows:

CurrentFormerly
Grade 1Class 1
Grade 1AClass 1A
Grade 2 Class 1Class 2
Grade 2 Class 2Class 2A
Grade 3 Class 1Class 3
Grade 3 Class 2Class 3A
Grade 4N Class 1Class 4
Grade 4N Class 2Class 4A
Grade 4N Class 3Class 4B
Grade 5 Class 1Class 5
Grade 5 Class 2Class 5A
Grade 22 Class 3Class 22B
Grade 3VClass 3V
Grade 6 Classes 1, 2, 3, and 4N/A

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Details
Book of Standards Volume: 01.05
Developed by Subcommittee: A01.06
Pages: 8
DOI: 10.1520/A0508_A0508M-04
ICS Code: 77.140.30