Find suppliers for this alloy C72500
Chemical Composition
Elements
Cu(1,2) Pb Sn Zn Fe Ni(3) Mn
(1) Cu + Sum of Named Elements 99.8% min.
(2) Cu value includes Ag.
(3) Ni value includes Co.
Min (%) 1.8 8.5
Max (%) Rem 0.05 2.8 0.50 0.6 10.5 0.20
Mechanical Properties *
Form Temper Temper Code Tensile Strength
(ksi)
YS-0.2% Offset
(ksi)
YS-0.5% Ext
(ksi)
Elongation
(%)
Rockwell B scale Rockwell 30T scale Section Size
(in)
Cold Work
(%)
* Measured at room temperature, 68°F (20°C).
Flat Products 1/2 Hard H02 71 Typ
69 Typ
65 Typ
6 Typ
78 Typ
0.04
1/4 Hard H01 65 Typ
58 Typ
53 Typ
18 Typ
71 Typ
0.04
1/8 Hard H00 58 Typ
43 Typ
29 Typ
65 Typ
60 Typ
0.04
3/4 Hard H03 77 Typ
75 Typ
5 Typ
81 Typ
0.04
Extra Hard H06 87 Typ
86 Typ
81 Typ
2 Typ
88 Typ
0.04
Hard H04 83 Typ
81 Typ
75 Typ
3 Typ
85 Typ
0.04
Nominal Grain Size 0.015 mm OS015 55 Typ
22 Typ
22 Typ
35 Typ
42 Typ
44 Typ
0.04
Spring H08 91 Typ
90 Typ
83 Typ
1 Typ
90 Typ
0.04
Super Spring H14 112 Typ
108 Typ
83 Typ
1 Typ
99 Typ
0.04
Wire 1/2 Hard H02 90 Typ
0.08 45
1/4 Hard H01 80 Typ
0.08 20
Extra Hard H06 100 Typ
0.08 75
Extra Spring H10 110 Typ
0.08 90
Nominal Grain Size 0.015 mm OS015 60 Typ
25 Typ
0.08
Super Spring H14 120 Typ
0.08 99
Physical Properties
Melting Point - Liquidus°F 2065
Melting Point - Solidus°F 1940
Densitylb/cu in. at 68°F 0.321
Specific Gravity 8.89
Electrical Conductivity% IACS at 68°F 11
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F 31
Coefficient of Thermal Expansion 68-57210 to -6 power per °F (68 – 572°F) 9.2
Specific Heat CapacityBtu/ lb /°F at 68°F 0.09
Modulus of Elasticity in Tensionksi 20000
Modulus of Rigidityksi 7500
Fabrication Properties
Technique Suitability
Soldering Excellent
Brazing Excellent
Oxyacetylene Welding Fair
Gas Shielded Arc Welding Good
Coated Metal Arc Welding Good
Spot Weld Excellent
Seam Weld Good
Butt Weld Excellent
Capacity for Being Cold Worked Excellent
Capacity for Being Hot Formed Excellent
Machinability Rating 20
Common Fabrication Processes
  • Blanking
  • Brazing
  • Coining
  • Drawing
  • Etching
  • Forming and Bending
  • Heading and Upsetting
  • Roll Threading and Knurling
  • Shearing
  • Spinning
  • Squeezing and Swaging
  • Stamping and Swaging
Thermal Properties
Treatment Minimum* Maximum*
* Temperature is measured in Fahrenheit.
Annealing 1200 1475
Hot Working Temperature 1550 1750
Typical uses
Product Category Product Reason Category Reason
Electrical Connectors Conductivity (Electrical) Electrical Conductivity
Connectors Conductivity (Thermal) Thermal Conductivity
Connectors Corrosion Resistance Corrosion Resistance
Connectors Corrosion Resistance Corrosion Resistance to Fresh Water
Connectors Corrosion Resistance Corrosion Resistance to Salt Water
Connectors Corrosion Resistance Resistant to Oxidation
Connectors Forming Characteristics Formability
Connectors Mechanical Properties High Modulus of Elasticity
Connectors Mechanical Properties High Strength
Control and Sensing Bellows Conductivity (Electrical) Electrical Conductivity
Control and Sensing Bellows Conductivity (Thermal) Thermal Conductivity
Control and Sensing Bellows Corrosion Resistance Corrosion Resistance
Control and Sensing Bellows Corrosion Resistance Resistant to Oxidation
Control and Sensing Bellows Mechanical Properties High Modulus of Elasticity
Control and Sensing Bellows Mechanical Properties High Strength
Electronic Contacts Conductivity (Electrical) Electrical Conductivity
Electronic Contacts Corrosion Resistance Corrosion Resistance
Electronic Contacts Mechanical Properties Moderate to High Strength
Electronic Contacts Solderability Solderability
Lead Frames Conductivity (Electrical) Electrical Conductivity
Lead Frames Conductivity (Thermal) Thermal Conductivity
Lead Frames Corrosion Resistance Corrosion Resistance
Lead Frames Corrosion Resistance Resistant to Oxidation
Lead Frames Mechanical Properties High Strength
Lead Frames Solderability Solderability
Relays Conductivity (Electrical) Electrical Conductivity
Relays Conductivity (Thermal) Thermal Conductivity
Relays Corrosion Resistance Corrosion Resistance
Relays Corrosion Resistance Resistant to Oxidation
Relays Mechanical Properties High Strength
Switch Springs Conductivity (Electrical) Electrical Conductivity
Switch Springs Conductivity (Thermal) Thermal Conductivity
Switch Springs Corrosion Resistance Corrosion Resistance
Switch Springs Corrosion Resistance Resistant to Oxidation
Switch Springs Forming Characteristics Formability
Switch Springs Mechanical Properties High Modulus of Elasticity
Switch Springs Mechanical Properties High Strength
Telecommunications Connectors Conductivity (Electrical) Electrical Conductivity
Telecommunications Connectors Corrosion Resistance Oxidation Resistance
Telecommunications Connectors Forming Characteristics Formability
Telecommunications Connectors Mechanical Properties Moderate to High Strength
Telecommunications Connectors Solderability Solderability
Industrial Brazing Alloy Brazing Characteristics Brazability
Applicable Specifications
Form Specific Sub-Form Application System Standard Description
Bar ASTM B122/B122M COPPER-NICKEL-ZINC ALLOY (NICKEL-SILVER) AND COPPER-NICKEL PLATE, SHEET, STRIP, AND ROLLED BAR
Plate ASTM B122/B122M COPPER-NICKEL-ZINC ALLOY (NICKEL-SILVER) AND COPPER-NICKEL PLATE, SHEET, STRIP, AND ROLLED BAR
Sheet ASTM B122/B122M COPPER-NICKEL-ZINC ALLOY (NICKEL-SILVER) AND COPPER-NICKEL PLATE, SHEET, STRIP, AND ROLLED BAR
Strip ASTM B122/B122M COPPER-NICKEL-ZINC ALLOY (NICKEL-SILVER) AND COPPER-NICKEL PLATE, SHEET, STRIP, AND ROLLED BAR
Corrosion Properties

No Corrosion Properties Available.