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This specification establishes requirements for a high-grade steam-metal or valve-bronze alloy (Copper Alloy UNS C92200) used for component castings of valves, flanges, and fittings. Tensile strength, yield strength, and elongation shall be determined from separately cast test bars and shall meet the specified requirements. Castings shall not be plugged, welded, burned-in, or impregnated.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
Significance and Use
1.1 This specification2 establishes requirements for a high-grade steam-metal or valve-bronze alloy (Copper Alloy UNS No. C922003) used for component castings of valves, flanges, and fittings.
1.2 The castings covered are used in products that may be manufactured in advance and supplied from stock by the manufacturer or other dealer.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
B208 Practice for Preparing Tension Test Specimens for Copper Alloy Sand, Permanent Mold, Centrifugal, and Continuous Castings
B824 Specification for General Requirements for Copper Alloy Castings
B846 Terminology for Copper and Copper Alloys
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
MSS StandardsSP-25 Standard Marking System for Valves, Fittings, Flanges and Unions Available from Manufacturers Standardization Society of the Valve and Fittings Industry (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http://www.mss-hq.com.
ICS Number Code 77.150.30 (Copper products)
UNSPSC Code 40141600(Valves); 31100000(Castings and casting assemblies)