Alloy No.

Alloy Name

Nominal Composition Percent

Tensile Strgth (thous psi)

% El.

Hardness of Weld

Melt Pt °F

Solid Pt °F

Fuming

Flow

Specifications

Cu

Mn

Sn

Fe

Si

Zn

Al

Rockwell “B”

BHN

 AWS

ASME

Federal

Military

C189

Deoxidized Copper

98

.50

1.0

-

.50

-

-

85K

-

-

-

1967

-

Low

V. Good

A5.7 ERCu

SFA5.7 ERCu

QQ-R-571C

MIL-E-45829A

C470

Naval Bronze

60

-

.75

-

-

Bal

-

55K

30

55-58

80

1625

1610

Med

V. Good

A5.8 RBCuZn-A

SFA5.8 RBCuZn-A

QQ-R-571C

MIL-R-19631B

C518

Phosphor Bronze A

Bal

-

5.0

-

P.22

-

-

35K min

-

-

70 - 85

-

-

-

-

A5.7 ERCuSn-A

SFA5.7 ERCuSn-A

QQ-R-571C

MIL-R-1963B

C521

Phosphor Bronze C

92

-

8

.10

P.19

.20

-

-

33

85

-

1880

1620

-

-

-

-

-

-

C610

Aluminum Bronze A-1

Bal

.50

-

-

-

.20

8

55K min

30

85

80-110

1905

-

-

-

A5.7 ERCuAl-A1

SFA5.7 ERCuAl-A1

-

-

C618

Aluminum Bronze A-2

Bal

-

-

-

.10

-

10

91K

23

-

130-150

1913

-

Low

E1

A5.7 ERCuAl-A2

SFA5.7 ERCuAl-A2

QQ-R-571C

MIL-E-23765/3A

C624

Aluminum Bronze A-3

Bal

-

-

3.0

-

-

11

65K

14

92

140-180

1900

1880

-

-

A5.7 ERCuAl-A3

SFA5.7 ERCuAl-A3

QQ-R-571C

MIL-R-19631 CuAl-B

C632

Nickel Aluminum Bronze

Bal

2.6

Ni 4.4

4.0

-

-

9.0

104K max

22

96

160-200

1940

1905

-

-

A5.7 ERCuNiAl

SFA5.7 ERCuNiAl

-

MIL-E-23765/3A

C633

Manganese Nickel Aluminum Bronze

Bal

13

Ni 2.2

3

-

-

7.7

110K max

27

-

160-200

-

-

-

-

A5.7 ERCuMnNiAl

SFA5.7 ERCuMnNiAl

-

MIL-E-23765/3A

C656

Silicon Bronze

96

1.1

-

-

3.1

-

-

50K

-

-

80-100

1866

-

Low

V. Good

A5.7 ERCuSi-A

SFA5.7 ERCuSi-A

QQ-R-571C

MIL-E-23765/3

C680

Low Fuming Bronze Nickel

59

Mn, Sn, Fe & Ni total 1.25% min

.12

Bal

-

65K

25

62-66

92

1620

1590

Low

V. Good

A5.8 RBCuZn-B

SFA5.8 RBCuZn-B

QQ-R-571C

MIL-R-19631B RCuZn-B

C681

Low-Fuming Bronze

58

-

.90

.80

-

Bal

-

63K

25

60

96

1620

1595

Low

E

A5.8 RBCuZn-C

SFA5.8 RBCuZn-C

QQ-R-571C

MIL-R-19631B RCuZn-C

C715

Copper Nickel

70

-

Ni 30

.50

-

-

-

75K

15

80

-

2260

2140

-

-

A5.7 ERCuNi

SFA5.7 ERCuNi

QQ-R-571C

MIL-R-19631B

C773

Nickel Silver

48

-

Ni 10

-

-

Bal

-

70K

25

74

120

1680

1665

Low

V.  Good

A5.8 RBCuZn-D

SFA5.8 RBCuZn-D

QQ-R-571C

MIL-R-19631B
(1)     E = Excellent