Реферат

This specification establishes the requirements for copper-based brass or bronze centrifugal castings. Mechanical properties are determined from test bar castings and should meet the requirements listed herein. Brinell hardness readings should be taken on the grip end of tension test bars. All castings should not be repaired by welding without customer approval. UNS C95520 copper alloy castings are used in the heat treated condition only.

Область применения

1.1 This specification establishes requirements for centrifugal castings of copper-base alloys having the nominal compositions shown in Table 1.

1.2 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.

TABLE 1 Nominal Compositions

ClassificationCopper Alloy
UNS No.Commercial
DesignationCopperTinLeadZincNickelIronAlum-
inumMang-
aneseSilicon Leaded red brassC8360085-5-5-585 5 5 5............... C8380083-4-6-7 or commercial red brass83 4 6 7............... Leaded semi-red brassC8440081-3-7-9 or valve composition81 3 7 9............... C8480076-2½-6½-15 or semi-red brass76 2½ 6½15............... Leaded yellow brassC85200high copper yellow brass72 1 324............... C85400commercial No. 1 yellow brass67 1 329............... C85700leaded naval brass61 1 137............... High-strength yellow brassC86200high-strength manganese bronze63......27...3 43... C86300high-strength manganese bronze61......27...3 63... C86400leaded manganese bronze58 1 138...1½½... C86500No. 1 manganese bronze58......39...1 11... C86700leaded manganese bronze58 1 134...2 22... Silicon bronze and siliconC87300silicon bronze95..................14 brassC87400silicon brass82...½14............ 3½ C87500silicon brass82......14............4 C87600silicon bronze89...... 6............5 Tin bronze and leadedC9030088-8-0-4, or modified “G” bronze88 8... 4............... tin bronzeC9050088-10-0-2, or “G” bronze8810... 2............... C9220088-6-2-4 or “M” bronze88 6 2 4............... C9230087-8-1-4, or Navy PC87 8 1 4............... High-lead tin bronzeC9320083-7-7-383 7 7 3............... C9350085-5-9-185 5 9 1............... C9360081-7-1281 712.................. C9370080-10-10801010.................. C9380078-7-1578 715.................. C9430071-5-2471 524.................. Aluminum bronzeC95200Grade A88............3 9...... C95300Grade B89............110...... C95400Grade C85............411...... C9541084......... 2410...... C9590082.5............4.513...... Nickel aluminum bronzeC95500Grade D81......... 4411...... C9552078.5......... 5.55.011...... C9580081.3......... 4.54 91.2... Leaded nickel bronzeC9730012 % leaded nickel silver57 2 92012............ C9760020 % leaded nickel silver64 4 4 820............ C9780025 % leaded nickel silver66 5 2 225............