ASTM B21/B21M-20(2026)

Detail information

Designation: ASTM B21/B21M-20(2026)

Publication date: 01/10/2026

Pages: 7

Country: American technical standard

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Anotation

This specification establishes the requirements for rods, bars, and shapes of naval brass with Copper Alloy UNS Nos. C46200, C46400, C47940, C48200, and C48500. Tempers available under this specification are M30 (as-hot extruded), O60 (soft annealed), O50 (light annealed), H60 (cold headed and formed), H02 (1 hard), and H04 (hard). Products shall be tested and shall adhere to dimensional (diameter, shape, length, straightness, and edge contour), mechanical (tensile and yield strength, Rockwell hardness, and elongation), and chemical composition requirements. Products shall also meet piston-finish rod and shafting, and U.S. Government purchase requirements.


Keywords:
naval brass, naval brass bar, naval brass rod, piston-finish rod, shafting, shapes, UNS No. C46200, UNS No. C46400, UNS No. C46750, UNS No. C47940, UNS No. C48200, UNS No. C48500, UNS No. C48640, UNS No. C48645,, ICS Number Code 77.150.30 (Copper products)