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ASTM B103/B103M : 15

Standard Specification for Phosphor Bronze Plate, Sheet, Strip, and Rolled Bar

Standard Details

1.1 This 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

(A) SAE Specification CA 521 conforms to the requirements of UNS No. C52100.

Note 1: All of the above alloys contain small amounts of phosphorus, used as a deoxidant in melting, and to enhance the mechanical properties.

1.2 The 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.

1.3 The following safety hazard caveat pertains only to the test method(s) described in this specification.

1.3.1 This 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.

General Information

Status : Historical
Standard Type: Main
Document No: ASTM B103/B103M : 15
Document Year: 2015
Pages: 7
  • Section Volume:
  • 02.01 Volume 02.01 Copper and Copper Alloys

Life Cycle

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ASTM B103/B103M : 15
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