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ASTM A320/A320M

Standard Specification for Alloy-Steel and Stainless Steel Bolting Materials for Low- Temperature Service

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Organization: ASTM
Publication Date: 15 March 2008
Status: inactive
Page Count: 8
ICS Code (Steels): 77.080.20
ICS Code (Fasteners in general): 21.060.01
scope:

This specification2 covers alloy steel bolting materials for pressure vessels, valves, flanges, and fittings for lowtemperature service. The term "bolting material" as used in this specification covers rolled, forged, or strain hardened bars, bolts, screws, studs, and stud bolts. The bars shall be hot-wrought. The material may be further processed by centerless grinding or by cold drawing. Austenitic stainless steel may be solution annealed or annealed and strain-hardened. When strain hardened austenitic stainless steel is ordered, the purchaser should take special care to ensure that Appendix X1 is thoroughly understood.

Several grades are covered, including both ferritic and austenitic steels designated L7, B8, etc. Selection will depend on design, service conditions, mechanical properties, and low-temperature characteristics. The mechanical requirements of Table 1 indicate the diameters for which the minimum mechanical properties apply to the various grades and classes, and Table 2 stipulates the requirements for Charpy impact energy absorption. The manufacturer should determine that the material can conform to these requirements before parts are manufactured. For example, when Grade L43 is specified to meet the Table 2 impact energy values at −150 °F [−101 °C], additional restrictions (such as procuring a steel with lower P and S contents than might normally be supplied) in the chemical composition for AISI 4340 are likely to be required.

NOTE 1-The committee formulating this specification has included several grades of material that have been rather extensively used for the present purpose. Other compositions will be considered for inclusion by the committee from time to time as the need becomes apparent. Users should note that hardenability of some of the grades mentioned may restrict the maximum size at which the required mechanical properties are obtainable.

Nuts for use with this bolting material are covered in Section 10 and the nut material shall be impact tested.

Supplementary Requirements (S1, S2, and S3) of an optional nature are provided. They shall apply only when specified in the inquiry, contract and order.

The values stated in either SI units or inch-pound units are to be regarded separately as standard. 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 non-conformance with the standard. Unless the order specifies the applicable "M" specification designation (SI units), the material shall be furnished to inch-pound units.

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

*A Summary of Changes section appears at the end of this standard.

2 For ASME Boiler and Pressure Vessel Code applications, see related Specification SA-320 in Section II of that Code.

Document History

June 1, 2018
Standard Specification for Alloy-Steel and Stainless Steel Bolting for Low-Temperature Service
This specification2 covers alloy steel bolting materials and bolting components for pressure vessels, valves, flanges, and fittings for low-temperature service. See Specification A962/A962M for the...
October 1, 2017
Standard Specification for Alloy-Steel and Stainless Steel Bolting for Low-Temperature Service
This specification2 covers alloy steel bolting materials and bolting components for pressure vessels, valves, flanges, and fittings for low-temperature service. See Specification A962/A962M for the...
May 1, 2017
Standard Specification for Alloy-Steel and Stainless Steel Bolting for Low-Temperature Service
This specification2 covers alloy steel bolting materials and bolting components for pressure vessels, valves, flanges, and fittings for low-temperature service. See Specification A962/A962M for the...
March 15, 2017
Standard Specification for Alloy-Steel and Stainless Steel Bolting for Low-Temperature Service
This specification2 covers alloy steel bolting materials and bolting components for pressure vessels, valves, flanges, and fittings for low-temperature service. See Specification A962/A962M for the...
November 1, 2015
Standard Specification for Alloy-Steel and Stainless Steel Bolting for Low-Temperature Service
This specification2covers alloy steel bolting materials and bolting components for pressure vessels, valves, flanges, and fittings for low-temperature service. See Specification A962/A962M for the...
May 1, 2015
Standard Specification for Alloy-Steel and Stainless Steel Bolting for Low-Temperature Service
This specification2 covers alloy steel bolting for pressure vessels, valves, flanges, and fittings for low-temperature service. See Specification A962/A962M for the definition of bolting. The bars...
May 1, 2014
Standard Specification for Alloy-Steel and Stainless Steel Bolting for Low-Temperature Service
This specification2 covers alloy steel bolting for pressure vessels, valves, flanges, and fittings for low-temperature service. See Specification A962/A962M for the definition of bolting. The bars...
November 1, 2011
Standard Specification for Alloy-Steel and Stainless Steel Bolting for Low-Temperature Service
This specification2 covers alloy steel bolting for pressure vessels, valves, flanges, and fittings for low-temperature service. See Specification A962/A962M for the definition of bolting. The bars...
May 1, 2011
Standard Specification for Alloy-Steel and Stainless Steel Bolting for Low-Temperature Service
This specification2 covers alloy steel bolting for pressure vessels, valves, flanges, and fittings for low-temperature service. See Specification A962/A962M for the definition of bolting. The bars...
November 1, 2010
Standard Specification for Alloy-Steel and Stainless Steel Bolting for Low-Temperature Service
This specification2 covers alloy steel bolting for pressure vessels, valves, flanges, and fittings for low-temperature service. See Specification A962/A962M for the definition of bolting. The bars...
May 1, 2010
Standard Specification for Alloy-Steel and Stainless Steel Bolting for Low-Temperature Service
This specification2 covers alloy steel bolting for pressure vessels, valves, flanges, and fittings for low-temperature service. See Specification A962/A962M for the definition of bolting. The bars...
ASTM A320/A320M
March 15, 2008
Standard Specification for Alloy-Steel and Stainless Steel Bolting Materials for Low- Temperature Service
This specification2 covers alloy steel bolting materials for pressure vessels, valves, flanges, and fittings for lowtemperature service. The term "bolting material" as used in this specification...
September 1, 2007
Standard Specification for Alloy-Steel and Stainless Steel Bolting Materials for Low-Temperature Service
This specification2 covers alloy steel bolting materials for pressure vessels, valves, flanges, and fittings for lowtemperature service. The term "bolting material" as used in this specification...
March 1, 2007
Standard Specification for Alloy-Steel and Stainless Steel Bolting Materials for Low-Temperature Service
This specification2 covers alloy steel bolting materials for pressure vessels, valves, flanges, and fittings for lowtemperature service. The term "bolting material" as used in this specification...
July 12, 2005
Standard Specification for Alloy-Steel and Stainless Steel Bolting Materials for Low-Temperature Service
(Footnote *) This specification(Footnote 2) covers alloy steel bolting materials for pressure vessels, valves, flanges, and fittings for low-temperature service. The term "bolting material" as used...
May 1, 2005
Standard Specification for Alloy-Steel and Stainless Steel Bolting Materials for Low- Temperature Service
(Footnote *) This specification(Footnote 2) covers alloy steel bolting materials for pressure vessels, valves, flanges, and fittings for low-temperature service. The term "bolting material" as used...
July 1, 2004
Standard Specification for Alloy-Steel and Stainless Steel Bolting Materials for Low-Temperature Service
(Footnote *) This specification(Footnote 2) covers alloy steel bolting materials for pressure vessels, valves, flanges, and fittings for low-temperature service. The term "bolting material" as used...
May 10, 2003
Standard Specification for Alloy-Steel and Stainless Steel Bolting Materials for Low-Temperature Service
This specification covers alloy steel bolting materials for pressure vessels, valves, flanges, and fittings for low-temperature service. The term "bolting material" as used in this specification...
March 10, 2002
Standard Specification for Alloy/Steel Bolting Materials for Low-Temperature Service
This specification covers alloy steel bolting materials for pressure vessels, valves, flanges, and fittings for low-temperature service. The term "bolting material" as used in this specification...
March 10, 2001
Standard Specification for Alloy/Steel Bolting Materials for Low-Temperature Service
1. Scope 1.1 This specification covers alloy steel bolting materials for pressure vessels, valves, flanges, and fittings for low-temperature service. The term "bolting material" as used in this...
October 10, 2000
Standard Specification for Alloy/Steel Bolting Materials for Low-Temperature Service
1. Scope 1.1 This specification covers alloy steel bolting materials for pressure vessels, valves, flanges, and fittings for low-temperature service. The term "bolting material" as used in this...
May 10, 2000
Standard Specification for Alloy/Steel Bolting Materials for Low-Temperature Service
This specification covers alloy steel bolting materials for pressure vessels, valves, flanges, and fittings for low-temperature service. The term "bolting material" as used in this specification...
March 10, 2000
Standard Specification for Alloy/Steel Bolting Materials for Low-Temperature Service
1. Scope 1.1 This specification covers alloy steel bolting materials for pressure vessels, valves, flanges, and fittings for low-temperature service. The term "bolting material" as used in this...
November 10, 1999
Standard Specification for Alloy/Steel Bolting Materials for Low-Temperature Service
1. Scope 1.1 This specification covers alloy steel bolting materials for pressure vessels, valves, flanges, and fittings for low-temperature service. The term "bolting material" as used in this...
December 10, 1998
Standard Specification for Alloy/Steel Bolting Materials for Low-Temperature Service
A description is not available for this item.

References

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