C75200 Nickel Silver
UNS C75200 Copper-Nickel-Zinc Alloy
C75200 is a nickel silver alloy (Cu-Ni-Zn) that combines strength, corrosion resistance, and excellent formability with a bright silver appearance. Despite the name, nickel silver contains no silver — the term refers to the alloy’s color, which results from its nickel content of approximately 18%.
With nominal composition of 65% copper, 18% nickel, and 17% zinc, C75200 offers a strong balance of mechanical properties, modest electrical conductivity, and tarnish resistance. It cold-works well, forms cleanly, and is widely used for stamped and drawn components in electrical, hardware, and architectural applications.
C75200 is most commonly produced in temper-controlled coil and strip for precision stamping operations, and is also available in sheet and bar for general fabrication.
Common Names & Cross-References
Designation | Value |
|---|---|
Common Names | Nickel Silver 65-18, German Silver, Alpaca, NS107 |
UNS | C75200 |
CDA | 752 |
British Standard | NS106 |
EN (Europe) | CuNi18Zn20 |
ASTM | B122 / B151 |
C75200 Chemical Composition
Element | Composition (%) |
|---|---|
Copper (Cu) | 63.0 – 66.5 |
Nickel (Ni) | 16.5 – 19.5 |
Zinc (Zn) | Balance |
Manganese (Mn) | 0.50 max |
Iron (Fe) | 0.25 max |
Lead (Pb) | 0.05 max |
Typical Mechanical Properties
Property | Annealed (O60) | Hard (H02) |
|---|---|---|
Tensile Strength | 55 ksi (380 MPa) | 85 ksi (586 MPa) |
Yield Strength (0.2%) | 27 ksi (186 MPa) | 75 ksi (517 MPa) |
Elongation (in 2 in.) | 40% | 3-8% |
Hardness | Rockwell B 60 | Rockwell B 87 |
Key Features & Advantages
- Excellent strength-to-formability balance
- Good corrosion and tarnish resistance
- Bright, attractive silver-tone appearance
- Strong fatigue and spring properties when temper-rolled
- Excellent solderability and machinability
- Available in a wide range of tempers for stamping and forming
Common Applications of C75200
- Electrical connectors, terminals, and contact components
- Springs, clips, and stamped parts
- Optical and precision instrument components
- Decorative hardware and architectural trim
- Musical instrument components (keys, valves, slides)
- Eyeglass frames and jewelry findings
Primary Markets Served
- Electrical & Electronic
- Hardware & Industrial Manufacturing
- Architectural & Decorative
- Optical & Precision Instruments
When to Specify C75200
- C75200 vs. C77000 (Nickel Silver 55-18) — C77000 has higher zinc and lower copper, with higher strength and lower cost. C75200 has better corrosion resistance and a brighter color.
- C75200 vs. C26000 cartridge brass — C75200 has better corrosion resistance, higher strength, and a silver appearance vs. yellow. C26000 is significantly more economical.
- C75200 vs. C51000 phosphor bronze — Phosphor bronze has better fatigue and spring performance for connector applications. Use C75200 when appearance and tarnish resistance matter.
Why Source 21?
- ISO 9001-certified quality system with full chemistry and mechanical traceability on every shipment
- Multi-million dollar national inventory across stainless, nickel alloys, copper, and brass
- Strong domestic and international mill relationships, including premium specialty mill partnerships
- In-house slitting, edging, leveling, and cut-to-length capabilities
- Contract programs, blanket orders, and vendor-managed inventory (VMI) for production accounts
- Responsive technical support for tight-tolerance and certification-driven work
Request a Quote
Contact Source 21 today for C75200 Nickel Silver pricing, availability, and processing options. Our team responds quickly, asks the right questions, and gets you accurate quotes on real material — not vague placeholders.
Call 631-821-1101 or request a quote online to get started.
Founded in 1990 Source 21 is a leading distributor and processor of stainless steel, copper and brass products.
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