Flat, Shaped and Round Wire


Resistance Wire, Hardware, Optical components, Photographic applications, Screws, Rivets, Base metal for plated jewelry 


Nickel silvers are alloys that contain copper, nickel, and zinc (no sliver). The nickel silvers have moderately high strength and good corrosion resistance. They have low to moderate strength and good aqueous corrosion resistance. 

Chemistry Typical

 UNS#     COPPER       NICKEL       LEAD         IRON        ZINC      OTHERS

C75200  63.0-66.5   16.5-19.5   0.05 max   0.25 max   Balance  0.50 Mn max

C76200  57.0-61.0   11.0-13.5   0.09 max   0.25 max   Balance  0.50 Mn max

C77000  53.5-56.5   16.5-19.5   0.05 max   0.25 max   Balance  0.50 Mn max

* Contact Ulbrich Wire for request regarding the availability of other copper alloys.
* Contact Ulbrich Technical Department for limits for additional trace elements and impurity levels.
* Nickel values in includes cobalt.
* Copper values include silver.
* Copper plus sum of named elements 99.5% min.

Physical Properties 

Typical Density: 0.310 - 0.316 lbs/in3, 8.58 - 8.75 g/cm3

Electrical Conductivity: (% IACS at 68° F 20°C, annealed): 5.5 - 9% 

Thermal Conductivity: BTU-in/hr-ft2-° F 
At 68° F: 17 - 24

Mean Coefficient of Thermal Expansion: µin/in-°F 
68 - 572 °F: 9 - 9.3 

Modulus of Elasticity: KSI (MPa) 
18 x 103 in tension 

Melting Range: 1981 °F (1083 °C) 


Profile, Round, Flat, Square 

Mechanical Properties at Room Temperature 

Properties: Annealed Typical 

Ultimate Tensile Strength: 53 KSI min (365 MPa min) 

Yield Strength: 25 KSI min (172 MPa min) 

Elongation: 35% min

Properties: Tempered 

These alloys can be cold worked to various tempers. 

*Actual physical and mechanical properties are alloy dependent. Contact Ulbrich Technical Service for alloy specific properties.

Additional Properties 

Corrosion Resistance 

Contact Ulbrich Wire for specific information. 

Wire Finishes 

XC - Extra clean. Annealed or annealed and cold rolled. Contact Ulbrich Wire with special finish requests. 

Heat Treatment 

These alloys are non hardenable by heat treatment. 


Contact Ulbrich Wire for specific information. 

Limitation of Liability and Disclaimer of Warranty: In no event will Ulbrich Stainless Steels & Special Metals, Inc., be liable for any damages arising from the use of the information included in this document or that it is suitable for the 'applications' noted. We believe the information and data provided to be accurate to the best of our knowledge but, all data is considered typical values only. It is intended for reference and general information and not recommended for specification, design or engineering purposes. Ulbrich assumes no implied or express warranty in regard to the creation or accuracy of the data provided in this document. 



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