ASTM B763-13 - 1.4.2013
 
1. Scope

1.1 This specification establishes requirements for copper alloy sand castings for valve applications. Nominal compositions of the alloys defined by this specification are shown in Table 1.2

TABLE 1 Nominal Compositions

Classification

Copper Alloy UNS No.

Commercial Designation

Copper

Tin

Lead

Zinc

Nickel

Iron

Alumi-
 num

Man-
ganese

Sili-
 con

Bismuth

Selenium

Leaded red brass

C83450

 

88

21/2 

2

61/2 

1

. . .

. . .

. . .

. . .

. . .

. . .

 

C83800

83-4-6-7 or commercial red brass

83

4

6

7

. . .

. . .

. . .

. . .

. . .

. . .

. . .

Leaded semi-red brass

C84400

81-3-7-9 or valve composition

81

3

7

9

. . .

. . .

. . .

. . .

. . .

. . .

. . .

 

C84800

76-21/2-61/2-15, or semi-red brass

76

21/2 

61/2 

15

. . .

. . .

. . .

. . .

. . .

. . .

. . .

Leaded yellow brass

C85200

high-copper yellow brass

72

1

3

24

. . .

. . .

. . .

. . .

. . .

. . .

. . .

 

C85400

commercial No. 1 yellow brass

67

1

3

29

. . .

. . .

. . .

. . .

. . .

. . .

. . .

 

C85700

leaded naval brass

61

1

1

37

. . .

. . .

. . .

. . .

. . .

. . .

. . .

High-strength yellow brass

C86200

high-strength manganese bronze

63

. . .

. . .

27

. . .

3

4

3

. . .

. . .

. . .

 

C86300

high-strength manganese bronze

61

. . .

. . .

27

. . .

3

6

3

. . .

. . .

. . .

 

C86400

leaded manganese bronze

58

1

1

38

. . .

1

1/2 

1/2 

. . .

. . .

. . .

 

C86500

No. 1 manganese bronze

58

. . .

. . .

39

. . .

1

1

1

. . .

. . .

. . .

 

C86700

leaded manganese bronze

58

1

1

34

. . .

2

2

2

. . .

. . .

. . .

Silicon bronze and silicon

C87300

silicon bronze

95

. . .

. . .

. . .

. . .

. . .

. . .

1

4

. . .

. . .

 brass

C87400

silicon brass

82

. . .

1/2 

14

. . .

. . .

. . .

. . .

31/2 

. . .

. . .

 

C87500

silicon brass

82

. . .

. . .

14

. . .

. . .

. . .

. . .

4

. . .

. . .

 

C87600

silicon bronze

89

. . .

. . .

6

. . .

. . .

. . .

. . .

5

. . .

. . .

 

C87610

silicon bronze

92

. . .

. . .

4

. . .

. . .

. . .

. . .

4

. . .

. . .

 

C89530

Bismuth-Selenium

86.5

4.7

. . .

8.0

. . .

. . .

. . .

. . .

. . .

1.5

.20

 

C89535

Bismuth

86.5

3.0

. . .

7.0

.65

. . .

. . .

. . .

. . .

1.4

. . .

Bismuth brass

C89720A

 

67.5

1

. . .

29.8

. . .

. . .

0.5

. . .

0.5

0.7

. . .

Bismuth semi-red brass

C89844

bismuth brass

841/2 

4

. . .

8

. . .

. . .

. . .

. . .

. . .

3

. . .

Tin bronze and leaded tin

C90300

88-8-0-4, or modified “G” bronze

88

8

. . .

4

. . .

. . .

. . .

. . .

. . .

. . .

. . .

 bronze

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C90500

88-10-0-2, on “G” bronze

88

10

. . .

2

. . .

. . .

. . .

. . .

. . .

. . .

. . .

 

C92300

87-8-1-4, or Navy PC

87

8

1

4

. . .

. . .

. . .

. . .

. . .

. . .

. . .

 

C92600

87-10-1-2

87

10

1

2

. . .

. . .

. . .

. . .

. . .

. . .

. . .

High-lead tin bronze

C93200

83-7-7-3

83

7

7

3

. . .

. . .

. . .

. . .

. . .

. . .

. . .

 

C93500

85-5-9-1

85

5

9

1

. . .

. . .

. . .

. . .

. . .

. . .

. . .

 

C93700

80-10-10

80

10

10

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

 

C93800

78-7-15

78

7

15

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

 

C94300

71-5-24

71

5

24

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

Nickel-tin bronze and

C94700

nickel-tin bronze grade “A”

88

5

. . .

2

5

. . .

. . .

. . .

. . .

. . .

. . .

 leaded nickel-tin bronze

C94800

leaded nickel-tin bronze grade “B”

87

5

1

2

5

. . .

. . .

. . .

. . .

. . .

. . .

 

C94900

leaded nickel-tin bronze grade “C”

80

5

5

5

5

. . .

. . .

. . .

. . .

. . .

. . .

Aluminum bronze

C95200

Grade A

88

. . .

. . .

. . .

. . .

3

9

. . .

. . .

. . .

. . .

 

C95300

Grade B

89

. . .

. . .

. . .

. . .

1

10

. . .

. . .

. . .

. . .

 

C95400

Grade C

85

. . .

. . .

. . .

. . .

4

11

. . .

. . .

. . .

. . .

 

C95410

 

84

. . .

. . .

. . .

2

4

10

. . .

. . .

. . .

. . .

Silicon aluminum bronze

C95600

Grade E

91

. . .

. . .

. . .

. . .

. . .

7

. . .

2

. . .

. . .

Nickel aluminum bronze

C95500

Grade D

81

. . .

. . .

. . .

4

4

11

. . .

. . .

. . .

. . .

 

C95800

 

81.3

. . .

. . .

. . .

4.5

4

9

1.2

. . .

. . .

. . .

Leaded nickel bronze

C97300

12 % leaded nickel silver

57

2

9

20

12

. . .

. . .

. . .

. . .

. . .

. . .

 

C97600

20 % leaded nickel silver

64

4

4

8

20

. . .

. . .

. . .

. . .

. . .

. . .

 

C97800

25 % leaded nickel silver

66

5

2

2

25

. . .

. . .

. . .

. . .

. . .

. . .

Special alloys

C99400

 

87

. . .

. . .

4.4

3.0

3.0

1.6

. . .

1.0

. . .

. . .

 

C99500

 

87

. . .

. . .

1.5

4.5

4.0

1.7

. . .

1.3

. . .

. . .

A Antimony 0.07, Boron 0.001.
Note 1—This specification does not cover Copper Alloy UNS Nos. C83600, C92200, C96200, and C96400. These alloys are also used in valve applications. They are covered by the following specifications:


C83600: B62

C92200: B61

C96200: B369

C96400: B369




1.2 The castings produced under this specification are used in products which may be manufactured in advance and supplied for sale from stock by the manufacturer.

1.3 Units—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.

 
2. Referenced Documents

E10-23

Standard Test Method for Brinell Hardness of Metallic Materials

E527-23

Standard Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)

B369-09

Standard Specification for Copper-Nickel Alloy Castings

B61-15(2021)

Standard Specification for Steam or Valve Bronze Castings

B62-17(2025)

Standard Specification for Composition Bronze or Ounce Metal Castings

B208-14(2021)

Standard Practice for Preparing Tension Test Specimens for Copper Alloy Sand, Permanent Mold, Centrifugal, and Continuous Castings

B824-17(2025)

Standard Specification for General Requirements for Copper Alloy Castings