ASTM B 103/B103M : 2015
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Hardcopy , PDF
14-10-2023
English
15-05-2015
1.1This specification establishes the requirements for copper-tin alloy (phosphor bronze), copper-tin-lead alloy (leaded phosphor bronze), and copper-tin-lead-zinc alloy (bearing bronze), plate, sheet, strip, and rolled bar. The phosphor bronzes commonly are used for deep drawing into bellows and stamping and forming into spring devices and into terminals and connectors for electrical apparatus because they combine high strength with high elongation. The leaded phosphor bronzes are used where strength, corrosion resistance, and machinability are required. The bearing bronze is used in bushings, bearings, and load-bearing thrust washers. The following alloys are covered:
| Copper Alloy UNS No.2 | Nominal Composition, % | Previously Used Designation | |||
| Copper | Tin | Zinc | Lead | ||
| C51000 | 95 | 5 | . . . | . . . | A1 |
| C51100 | 96 | 4 | . . . | . . . | A |
| C51180 | 96 | 4 | . . . | . . . | . . . |
| C51900 | 94 | 6 | . . . | . . . | |
| C52100A | 92 | 8 | . . . | . . . | C |
| C52180 | 92 | 8 | . . . | . . . | . . . |
| C52400 | 90 | 10 | . . . | . . . | D |
| C53400 | 94 | 5 | . . . | 1 | B1 |
| C54400 | 88 | 4 | 3 | 4 | B2 |
Note 1:All of the above alloys contain small amounts of phosphorus, used as a deoxidant in melting, and to enhance the mechanical properties.
1.2The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, SI units are shown in brackets. 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.
1.3The following safety hazard caveat pertains only to the test method(s) described in this specification.
1.3.1This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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