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Unformatted text preview: SPECIFICATION FOR STEAM OR VALVE BRONZE CASTINGS
SB-61 (Identical with ASTM Speciﬁcation B 61-93 for the alloy covered except for the deletion of Supplementary Requirements and Appendix X1, and editorial differences. Certiﬁcation has been made mandatory. Also, the entire speciﬁcation revised to comply with ASTM B 824, General Requirements for Copper Alloy Castings.) 1. Scope 3. General Requirements 1.1 This speciﬁcation establishes requirements for a high-grade steam-metal or valve-bronze alloy (Copper Alloy UNS No. C92200) 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 the standard. 3.1 Material furnished under this speciﬁcation shall conform to the applicable requirements of Speciﬁcation SB-824. 3.2 Analysis of residual elements, if desired (see 5.3). 4. Ordering Information 4.1 Orders for castings under this speciﬁcation shall include the following: 4.1.1 Quantity of castings required, 4.1.2 Copper Alloy UNS No. (Table 1), 4.1.3 Speciﬁcation title, number, and year of issue, 4.1.4 Pattern or drawing number and condition (as-cast, machined, etc.), 4.1.5 Chemical analysis of residual elements if speciﬁed in the purchase order (...
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- Spring '08