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Unformatted text preview: Silicon
A Composition, % Max (Except as Indicated) 86.0–90.0 5.5–6.5 1.0–2.0 3.0–5.0 1.0A Composition, % Max (Except as Indicated) 0.25 0.25 0.05 0.05 0.005 0.005 34 16 24 ksi p 1000 psi. See Appendix. C Yield strength shall be determined as the stress producing an elongation under load of 0.5% that is 0.01 in. in a gage length of 2 in. 7. Workmanship and Finish 7.1 The castings shall not have injurious blowholes, porosity, shrinkage defects, cracks, or other injurious defects. They shall be well cleaned. 7.2 Pressure castings shall not be plugged, welded, burned-in, or impregnated. 7.3 Wall thicknesses and sections shall meet or exceed the minimum requirements of applicable codes. In determining copper minimum, copper may be calculated as copper plus nickel. 5. Chemical Composition 8. Sampling 8.1 Copper Alloy UNS No. C92200 test bar castings shall be cast to the form and dimensions shown in Figs. 2, 3, or 4 of Practice B 208. 9. Certiﬁcation 5.1 The alloy shall conform to the chemical requirements for major elements speciﬁed in Table 1. 5.2 These speciﬁcation limits do not preclude the presence of other elements. Limits may be established for unnamed elements by agreement between manufacturer or supplier and purchaser. Copper or zinc may be given as remainder and may be taken as...
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- Spring '08