Nickel Copper Alloys: Cupro Nickel Alloy, Nickel Silver Alloy & Phosphor Bronze

CUPRO-NICKEL ALLOY 706CUPRO-NICKEL ALLOY 715COPPER⁄NICKEL⁄TIN ALLOY 725
|NICKEL SILVER ALLOY 735NICKEL SILVER ALLOY 752NICKEL SILVER ALLOY 762
NICKEL SILVER ALLOY 770AVAILABLE TEMPERS

Nickel Copper Alloys: Cupro Nickel Alloy, Nickel Silver Alloy & Phosphor Bronze

For decades, Cupro Nickel (or copper nickel) has offered solutions to technological challenges. It’s highly resistant to corrosion in seawater and has high electrical resistivity, thus making it useful in the marine industry. Cupro Nickel is easily worked, both hot and cold.

It has numerous applications including but not limited to:

  • Piping
  • Heat exchangers
  • Condensers
  • Coolers

For additional information, contact us.

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CUPRO-NICKEL ALLOY 706
NOMINAL DATA SHEET
 
TYPICAL NOMINAL CHEMISTRY
10 % Cu/Ni
88.6% Cu
10 % Ni
1.4 % Fe

ASME SPEC NO.: SB171 & 402
SAE ALLOY NO.:
MILITARY SPEC.:MIL-C-15726
ASTM ALLOY NO.:B122
FEDERAL SPECS.:
DENSITY(lbs. per cu. in at 68 F (Annealed) (x 27.68 = gms/cu cm at 20 C):.323
MOD. OF ELAST.(x 10****** PSI, tension): 18
ELECT. COND.(% IACS at 68 F (20 C) as annealed): 9
THERM. COND.
(BTU per sq.ft.per ft.per hr.per F at 68 F,(20 C): 26
COEFF.OF TH.EXPN.(Inches/inch/ F x 10(-******) from 68 F to 572 F (20 C to 300 C): 9.5

 

TENSILE STRENGTH
YIELD STRENGTH
(0.2% offset)
(x 1000 PSI (MPA = KSI x 6.8948)
annealed: 43 - 50
25 max
1/2 hard: 58 - 72
55 - 71
full hard: 71 - 83
69 - 81
spring: 78 - 88
76 min,

ELONGATION % IN 2 inches (=% in 50mm)
annealed: 33 - 37
1/2 hard: 2 - 9
full hard: 1 - 2
spring: 1 max

ROCKWELL B HARDNESS
(.20 gauge and over (Rockwell F or 30 T where noted)
annealed: - 66 - 84(F)
1/2 hard: 66 - 81
full hard: 76 - 86
spring: 83 - 91

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CUPRO-NICKEL ALLOY 715
NOMINAL DATA SHEET
 
PTYPICAL NOMINAL CHEMISTRY
30% Cu/Ni
69.4% Cu
30 % Ni
0.6 % Fe

ASME SPEC NO.: SB171 & 402
SAE ALLOY NO.: MILITARY SPEC.:MIL-C-15726
MILITARY SPEC.:MIL-C-15726
ASTM ALLOY NO.:B122
FEDERAL SPECS.:
DENSITY(lbs. per cu. in at 68 F (Annealed) (x 27.68 = gms/cu cm at 20 C):.323
MOD. OF ELAST.(x 10****** PSI, tension):22
ELECT. COND.(% IACS at 68 F (20 C) as annealed):4.6
THERM. COND.
COEFF.OF TH.EXPN.(Inches/inch/ F x 10(-******) from 68 F to 572 F (20 C to 300 C):9.0

 

TENSILE STRENGTH
YIELD STRENGTH
(0.2% offset)
(x 1000 PSI (MPA = KSI x 6.8948)
annealed: 52 min.
-
1/2 hard: 66 - 80
60 - 78
full hard: 75-88
73 - 84
spring: 84 - 94
81 - 90

ELONGATION % IN 2 inches (=% in 50mm)
annealed: 30 min.
1/2 hard: 3 - 10
full hard: 2 - 4
spring: 1 - 2

ROCKWELL B HARDNESS
(.20 gauge and over (Rockwell F or 30 T where noted)
annealed: - 76 - 85
1/2 hard: 76 - 85
full hard: 83 - 89
spring: 87 - 91


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COPPER / NICKEL / TIN ALLOY 725
NOMINAL DATA SHEET
 
TYPICAL NOMINAL CHEMISTRY
88.2% Cu
9.5% Ni
2.3% SN

ASME SPEC NO.:
SAE ALLOY NO.:
MILITARY SPEC.:
ASTM ALLOY NO.:B122
FEDERAL SPECS.:
DENSITY(lbs. per cu. in at 68 F (Annealed) (x 27.68 = gms/cu cm at 20 C):.321
MOD. OF ELAST.(x 10****** PSI, tension):20
ELECT. COND.(% IACS at 68 F (20 C) as annealed):11
THERM. COND.
(BTU per sq.ft.per ft.per hr.per F at 68 F,(20 C):31
COEFF.OF TH.EXPN.(Inches/inch/ F x 10(-******) from 68 F to 572 F (20 C to 300 C):9.2

 

TENSILE STRENGTH
YIELD STRENGTH
(0.2% offset)
(x 1000 PSI (MPA = KSI x 6.8948)
annealed: 45 - 65
18 - 25
1/2 hard: 65 - 80
59 - 78
full hard: 75 - 90
73 - 88
spring: 85 - 100
83 - 97

ELONGATION % IN 2 inches (=% in 50mm)
annealed: 34 - 36
1/2 hard: 3 - 17
full hard: 1 - 5
spring: 1 - 2

ROCKWELL B HARDNESS
(.20 gauge and over (Rockwell F or 30 T where noted)
annealed: - 50 max (30t)
1/2 hard: 70 - 90
full hard: 75 - 90
spring: 85 - 95

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NICKEL SILVER ALLOY 735
NOMINAL DATA SHEET
 
TYPICAL NOMINAL CHEMISTRY
72% Cu
18% Ni
10%ZN

ASME SPEC NO.:
SAE ALLOY NO.:
MILITARY SPEC.:
ASTM ALLOY NO.:B122
FEDERAL SPECS: QCC 585
DENSITY(lbs. per cu. in at 68 F (Annealed) (x 27.68 = gms/cu cm at 20 C):.319
MOD. OF ELAST.(x 10****** PSI, tension): 18
ELECT. COND.(% IACS at 68 F (20 C) as annealed): 8
THERM. COND.
(BTU per sq.ft.per ft.per hr.per F at 68 F,(20 C): 21.5
COEFF.OF TH.EXPN.(Inches/inch/ F x 10(-******) from 68 F to 572 F (20 C to 300 C): 9.0

 

TENSILE STRENGTH
YIELD STRENGTH
(0.2% offset)
(x 1000 PSI (MPA = KSI x 6.8948)
annealed: 50 - 68
15 - 60
1/2 hard: 63 - 75
49 - 69
full hard: 73 - 84
67 - 78
spring: 85 - 93
78 - 84

ELONGATION % IN 2 inches (=% in 50mm)
annealed: 11 - 37
1/2 hard: 3 - 16
full hard: 1 - 3
spring: 1 max.

ROCKWELL B HARDNESS
(.20 gauge and over (Rockwell F or 30 T where noted)
annealed: - 81 - 100(F)
1/2 hard: 75 - 84
full hard: 83 - 88
spring: 89 - 92

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NICKEL SILVER ALLOY 752
NOMINAL DATA SHEET
 
TYPICAL NOMINAL CHEMISTRY
65% Cu
18% Ni
17%ZN

ASME SPEC NO.:
SAE ALLOY NO.: CA752
MILITARY SPEC.:
ASTM ALLOY NO.:B122
FEDERAL SPECS: QCC 585
DENSITY(lbs. per cu. in at 68 F (Annealed) (x 27.68 = gms/cu cm at 20 C):.316
MOD. OF ELAST.(x 10****** PSI, tension): 18
ELECT. COND.(% IACS at 68 F (20 C) as annealed): 6
THERM. COND.
(BTU per sq.ft.per ft.per hr.per F at 68 F,(20 C): 19
COEFF.OF TH.EXPN.(Inches/inch/ F x 10(-******) from 68 F to 572 F (20 C to 300 C): 9.0

 

TENSILE STRENGTH
YIELD STRENGTH
(0.2% offset)
(x 1000 PSI (MPA = KSI x 6.8948)
annealed: 53 - 63
18 - 32
1/2 hard: 66 - 80
48 - 78
full hard: 78 - 91
75 - 90
spring: 90 - 101
88 - 99

ELONGATION % IN 2 inches (=% in 50mm)
annealed: 29 - 42
1/2 hard: 6 -22
full hard: 3 - 7
spring: 1 - 2

ROCKWELL B HARDNESS
(.20 gauge and over (Rockwell F or 30 T where noted)
annealed: - 81 - 100(F)
1/2 hard: 68 - 82
full hard: 80 - 90
spring: 89 - 96

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NICKEL SILVER ALLOY 762
NOMINAL DATA SHEET
 
TYPICAL NOMINAL CHEMISTRY
59% Cu
12% Ni
29%ZN

ASME SPEC NO.:
SAE ALLOY NO.:
MILITARY SPEC.:
ASTM ALLOY NO.:B122
FEDERAL SPECS: QCC 585
DENSITY(lbs. per cu. in at 68 F (Annealed) (x 27.68 = gms/cu cm at 20 C):.310
MOD. OF ELAST.(x 10****** PSI, tension): 18
ELECT. COND.(% IACS at 68 F (20 C) as annealed): 9
THERM. COND.
(BTU per sq.ft.per ft.per hr.per F at 68 F,(20 C): 24
COEFF.OF TH.EXPN.(Inches/inch/ F x 10(-******) from 68 F to 572 F (20 C to 300 C): 9.0

 

TENSILE STRENGTH
YIELD STRENGTH
(0.2% offset)
(x 1000 PSI (MPA = KSI x 6.8948)
annealed: 57 - 75
21 - 51
1/2 hard: 75 - 91
58 - 82
full hard: 90 - 105
82 - 97
spring: 109 - 122
101 - 110

ELONGATION % IN 2 inches (=% in 50mm)
annealed: 32 - 49
1/2 hard: 6 -30
full hard: 3 - 6
spring: 1 max.

ROCKWELL B HARDNESS
(.20 gauge and over (Rockwell F or 30 T where noted)
annealed: - 81 - 100(F)
1/2 hard: 77 - 98
full hard: 90 - 95
spring: 97 - 100

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NICKEL SILVER ALLOY 770
NOMINAL DATA SHEET
 
TYPICAL NOMINAL CHEMISTRY
59% Cu
18% Ni
27%ZN

CHEMICAL COMPOSITION: NICKEL SILVER 55 - 18
55% CU / 27% ZN / 18% NI
ASME SPEC NO.:
SAE ALLOY NO.: CA770
MILITARY SPEC.:
ASTM ALLOY NO.:B122
FEDERAL SPECS: QCC 585
DENSITY(lbs. per cu. in at 68 F (Annealed) (x 27.68 = gms/cu cm at 20 C):.314
MOD. OF ELAST.(x 10****** PSI, tension): 18
ELECT. COND.(% IACS at 68 F (20 C) as annealed): 5.5
THERM. COND.
(BTU per sq.ft.per ft.per hr.per F at 68 F,(20 C): 17
COEFF.OF TH.EXPN.(Inches/inch/ F x 10(-******) from 68 F to 572 F (20 C to 300 C): 9.3

 

TENSILE STRENGTH
YIELD STRENGTH
(0.2% offset)
(x 1000 PSI (MPA = KSI x 6.8948)
annealed: 61 - 76
23 - 41
1/2 hard: 78 - 95
64 - 93
full hard: 92 - 107
90 - 106
spring: 108 - 120
107 - 118

ELONGATION % IN 2 inches (=% in 50mm)
annealed: 39 - 48
1/2 hard: 5 - 24
full hard: 3 - 6
spring: 1 max.

ROCKWELL B HARDNESS
(.20 gauge and over (Rockwell F or 30 T where noted)
annealed: - 81 - 100(F)
1/2 hard: 81 - 92
full hard: 90 - 96
spring: 97 - 100

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AVAILABLE TEMPERS:
ANNEALED, 1/4 HARD, 1/2 HARD, 3/4 HARD, HARD, EX. HARD, SPRING, EX. SPRING
COIL/FOIL
.003
.004
.005
.010
.015
.020
.030
.040
.050
.062
WIRE form also available.


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