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ASTM A 540/A 540M Document Information:
Title
Standard Specification for Alloy-Steel Bolting Materials for Special Applications
ASTM International
Publication Date:
Mar 1, 2006
Scope:
This specification2 covers regular and special-quality alloy steel bolting materials which may be used for nuclear and other special applications. Bolting materials as used in this specification cover rolled or forged bars, rotary pierced or extruded seamless tubes, bored bars, or forged hollows from forged or rolled bar segments to be manufactured into bolts, studs, washers, and nuts.
Several grades of steel are covered. The grade and class shall be specified by the purchaser.
Supplementary requirements of an optional nature are provided for use when special quality is desired. These supplementary requirements call for additional tests to be made and when desired shall be so stated in the order, together with the acceptance limits required.
This specification is expressed in both inch-pound units and in SI units. However, 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.
2For ASME Boiler and Pressure Vessel Code Applications see related Specification SA-540 in Section II of that Code.
Keywords:
- steel bolting material
- washers—steel
- chromium-molybdenum alloy steel
- chromium-molybdenum-vanadium alloy steel
- nuclear applications
- nuts—steel
- tubes—extruded seamless
- nickel-chromium-molybdenum alloy steel
- chromiumnickel-molybdenum-vanadium alloy steel
- steel bars—alloy
- fasteners—steel
- bolts—steel
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