ASTM-B98 Historical Revision Information
Standard Specification for Copper-Silicon Alloy Rod, Bar and Shapes

Show Complete Document History

Document Center Inc. is an authorized dealer of ASTM standards.
The following bibliographic material is provided to assist you with your purchasing decision:

This specification covers rods, bars, and shapes of copper-silicon alloys with UNS Alloy UNS Nos. C65100, C65500, and C66100. The starting materials shall be cast billets or rods of such soundness and structure as to enable them to be processed by hot working, cold working, straightening, and annealing to produce a uniform wrought structure in the finished product. Tempers available under this specification are O60 (soft annealed), H01 (¼-hard), H02 (½-hard), H04 (hard), H06 (extra-hard), M20 (as hot rolled), and M30 (as hot extruded). Products shall be tested and shall adhere to dimensional (mass, diameter, shape, length, straightness, and edge contour), mechanical (tensile and yield strength, elongation, and Rockwell hardness), and chemical composition requirements.



1.1 This specification establishes requirements for copper-silicon rod, bar, and shapes for UNS Alloys C65100, C65500, and C66100.

Note 1—Material for hot forging is covered by Specification B 124/B 124M.

Note 2—For ASME Boiler and Pressure Vessel Code applications, see Specification SB-98 in Section II of that code.

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.


copperrod, bar, shapes; copper-silicon alloy; high silicon bronze A; low silicon bronze B; silicon bronze; UNS No. C65100; UNS No. C65500; UNS No. C66100; Bronze rod/bar/shapes--specifications; Copper alloy rod/bar/shapes--specifications; Copper-silicon alloys; High silicon Bronze A; Low-silicon Bronze B; Silicon bronze--specifications; UNS C65100 (low silicon bronze B); UNS C65500 (high silicon bronze A); UNS C66100 (silicon bronze); ICS Number Code 77.150.30 (Copper products)

To find similar documents by ASTM Volume:

02.01 (Copper and Copper Alloys)

To find similar documents by classification:

77.150.30 (Copper products)

This document comes with our free Notification Service, good for the life of the document.

This document is available in either Paper or PDF format.

Document Number


Revision Level




Modification Type


Publication Date

Oct. 1, 2008

Document Type


Page Count

5 pages

Committee Number