Реферат

This specification establishes the requirements brass plates, sheets, strips, and rolled bars made from UNS C21000, C22000, C22600, C23000, C24000, C26000, C26800, C27200, or C28000. Plates are generally available only in the hot-rolled temper. The standard tempers of as hot rolled, rolled, annealed, and annealed-to-temper materials are detailed in this specification as well as in other specifications listed herein. This specification also contains information on the required tensile strengths, Rockwell hardness and grain sizes of the materials. The Rockwell hardness test can be used to test for general conformity to the specification requirements for temper, tensile strength and grain size.

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1.1 This specification establishes the requirements for brass plate, sheet, strip, and rolled bar of the following alloys:

Copper Alloy
UNS No.Previous
Trade NameNominal Composition Copper, %Zinc, % C21000Gilding, 95 %955 C22000Commerical Bronze, 90 %9010 C22600Jewerly Bronze, 87¹/₂ %87.512.5 C23000Red Brass, 85 %8515 C24000Low Brass, 80 %8020 C26000Cartridge Brass, 70 %7030 C26800Yellow Brass, 66 %6634 C27200…6337 C28000Muntz Metal, 60 %6040

1.2 The values stated in either inch-pound units or SI 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 two systems may results in nonconformance with the standard.