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770 Nickel Silver Product Guide
Overview
Nickel Silver is neither nickel, nor silver, it’s mostly copper and zinc, though with some nickel alloyed as well. It’s also often called German Silver for historical reasons, but again, it’s not silver, and was not discovered by Germans. 770 nickel silver has good strength, a silvery appearance, and excellent resistance to corrosion and tarnish. 770 has exceptional solderability and good electrical conductivity. It is typically used for decorative and ornamental applications.
Common Trade Names
UNS C77000, CDA 770, C770, Albata, Alpacca, Argentann, German Silver, New Silver, Nickel Brass
Specifications - 770 Nickel Silver
ASTM
B122
Applications
Mechanical Information
770
770: Density
0.314 lb/in3
770: Ultimate Tensile Strength
78-95 ksi
770: Yield Tensile Strength
46-93 ksi
770: Shear Modulus
6,700 ksi
770: Hardness Rockwell / Brinell
B87 / 170
770: Elongation at Break Percentage
5-24%
770: Modulus of Elasticity
18,000 ksi
770: Poisson's Ratio
0.31
770: Machinability Percentage
30%
770: Melting Point
1,840-1,930 °F
770: Specific Heat
9.08 x 10^-2 BTU/lb-°F
770: Thermal Conductivity
204 BTU-in/hr-ft^2-°F
770: Electrical Conductivity
5.5% IACS
Chemistry Information
Element
Percentage
Element: Cu
Percentage: 53.5 - 56.5
Element: Fe
Percentage: 0.25 max
Element: Pb
Percentage: 0.1 max
Element: Mn
Percentage: 0.5 max
Element: Ni
Percentage: 16.5 - 19.5
Element: Zn
Percentage: 27
|
Chemistry Information
|
|
Element |
Percentage |
| Cu | 53.5 - 56.5 |
| Fe | 0.25 max |
| Pb | 0.1 max |
| Mn | 0.5 max |
| Ni | 16.5 - 19.5 |
| Zn | 27 |