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C77000 Nickel Silver, 55-18 Wrought NICKEL SILVERS Copper-Nickel-Zinc Alloys (Nickel Silvers) true false https://api.copper.org/alloys.xhtml/C77000
Chemical Composition
Elements
Cu(1,2) Pb Zn Fe Ni(3) Mn
(1) Cu + Sum of Named Elements 99.5% min.
(2) Cu value includes Ag.
(3) Ni value includes Co.
Min (%) 53.5 16.5
Max (%) 56.5 0.05 Rem 0.25 19.5 0.50
Mechanical Properties *
Form Temper Temper Code Tensile Strength
(ksi)		 YS-0.5% Ext
(ksi)		 Elongation
(%)		 Rockwell B scale Rockwell F scale Rockwell 30T scale Torsion Modulus
(ksi)		 Section Size
(in)		 Cold Work
(%)
* Measured at room temperature, 68°F (20°C).
Flat Products Extra Hard H06 108 Typ
 90 Typ
 2.5 Typ
 96 Typ
 80 Typ
 0.04
Hard H04 100 Typ
 85 Typ
 3 Typ
 91 Typ
 77 Typ
 6.8 Typ 0.04
Nominal Grain Size 0.035 mm OS035 60 Typ
 27 Typ
 40 Typ
 55 Typ
 90 Typ
 0.04
Spring H08 115 Typ
 2.5 Typ
 99 Typ
 81 Typ
 0.04
Wire Hard H04 145 Typ
 2 Typ
 0.08 68
Nominal Grain Size 0.035 mm OS035 60 Typ
 40 Typ
 0.08
Physical Properties
Melting Point - Liquidus°F 1930
Densitylb/cu in. at 68°F 0.314
Specific Gravity 8.7
Electrical Conductivity% IACS at 68°F 5.5
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F 17
Coefficient of Thermal Expansion 68-57210 to -6 power per °F (68 – 572°F) 9.3
Specific Heat CapacityBtu/ lb /°F at 68°F 0.09
Modulus of Elasticity in Tensionksi 18000
Modulus of Rigidityksi 6800
Fabrication Properties
Technique Suitability
Soldering Excellent
Brazing Excellent
Oxyacetylene Welding Good
Gas Shielded Arc Welding Fair
Coated Metal Arc Welding Not Recommended
Spot Weld Good
Seam Weld Fair
Butt Weld Good
Capacity for Being Cold Worked Good
Capacity for Being Hot Formed Poor
Machinability Rating 30
Common Fabrication Processes

No fabrication process properties for this alloy

Thermal Properties
Treatment Minimum* Maximum*
* Temperature is measured in Fahrenheit.
Annealing 1100 1500
Typical uses
Product Category Product Reason Category Reason
Electrical Resistance Wire Conductivity (Electrical) Low Conductivity
Springs Conductivity (Thermal) Thermal Conductivity
Springs Corrosion Resistance Corrosion Resistance
Springs Mechanical Properties High Strength
Springs Thermal Properties Resistance to Stress Relaxation
Industrial Optical Goods Appearance Appearance
Optical Goods Corrosion Resistance Corrosion Resistance
Optical Goods Mechanical Properties Moderate Strength
Applicable Specifications
Form Specific Sub-Form Application System Standard Description
Bar SAE J463 WROUGHT COPPER AND COPPER ALLOYS
SAE J461 WROUGHT AND CAST COPPER ALLOYS
ASTM B151/B151M COPPER-NICKEL-ZINC ALLOY (NICKEL-SILVER) AND COPPER-NICKEL ROD AND 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
Rod SAE J461 WROUGHT AND CAST COPPER ALLOYS
SAE J463 WROUGHT COPPER AND COPPER ALLOYS
ASTM B151/B151M COPPER-NICKEL-ZINC ALLOY (NICKEL-SILVER) AND COPPER-NICKEL ROD AND BAR
Sheet SAE J461 WROUGHT AND CAST COPPER ALLOYS
SAE J463 WROUGHT COPPER AND COPPER ALLOYS
ASTM B122/B122M COPPER-NICKEL-ZINC ALLOY (NICKEL-SILVER) AND COPPER-NICKEL PLATE, SHEET, STRIP, AND ROLLED BAR
Strip SAE J463 WROUGHT COPPER AND COPPER ALLOYS
SAE J461 WROUGHT AND CAST COPPER ALLOYS
ASTM B122/B122M COPPER-NICKEL-ZINC ALLOY (NICKEL-SILVER) AND COPPER-NICKEL PLATE, SHEET, STRIP, AND ROLLED BAR
Wire ASTM B206/B206M COPPER-NICKEL-ZINC ALLOY (NICKEL-SILVER WIRE) AND COPPER-NICKEL ALLOY WIRE
Corrosion Properties

No Corrosion Properties Available.