C75700 Nickel Silver

C75700 Nickel Silver

Balance
Copper Content
12–18%
Nickel Content
Balance
Zinc Content
C75700 nickel silver is a copper-nickel-zinc alloy offering excellent corrosion resistance, good formability, and an attractive silver-like appearance. It is widely used for decorative components, precision parts, electrical contacts, musical instruments, and industrial applications requiring reliable performance and aesthetic finish.
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Lead Time: 3-5 Business Days

Product Overview

C75700 nickel silver, also known as German silver, is a copper-nickel-zinc alloy containing nickel to improve corrosion resistance, strength, and appearance. Despite its name, nickel silver does not contain actual silver and is classified as a copper alloy.

Compared with standard brass alloys, C75700 provides improved corrosion resistance, higher strength, and a brighter metallic appearance. Its excellent formability and surface finish make it suitable for precision stamping, decorative components, and specialty industrial applications.

C75700 nickel silver is commonly supplied in sheets, strips, wires, bars, and custom profiles for electronics, musical instruments, architectural hardware, and precision manufacturing.

Key Features

Excellent Seawater Corrosion Resistance
Attractive Silver-Like Appearance
Good Formability
Good Mechanical Strength
Stable Electrical Performance

Available Sizes

Copper Shape Thickness (mm) Width/Diameter (mm) Length (m)
Bar - Φ5-200 1-6
Wire - Φ0.05-10 Customize
Sheet 0.25-6 500-2500 1-6
Plate 6-200 200-3000 1-6
Strip 0.15-6 8-610 Customize
Tube OD: φ2-600; WT:φ0.2-100mm - 1-6
Coil 0.15-6 3-1250 1-6
Foil < 0.15 10-1350 Customize
Profile Customized Customize Customize

* Custom sizes available upon request. Contact our sales team for special requirements.

Technical Specifications

Precision data for engineering decisions. All values tested per ASTM standards.

01 Chemical Composition

Specification Value
Copper (Cu) Balance
Nickel (Ni) Approx. 12–18%
Lead (Pb) Controlled
Zinc (Zn) Balance

02 Mechanical & Physical Properties

Property Value
Density 8.6–8.8 g/cm³
Tensile Strength 350–600 MPa
Yield Strength 150–450 MPa
Elongation 10–40%
Electrical Conductivity 5–15% IACS
Thermal Conductivity 30–50 W/m·K
Melting Range Approx. 950–1050°C

03 C75700 vs C75200 vs C77000

Grade Nickel Content Main Feature Applications
C75200 ~18% Ni Higher strength and corrosion resistance Precision parts, electronics
C75700 Medium Ni Balanced performance and cost Decorative, stamping, industrial
C77000 ~18–22% Ni High strength and elasticity Springs, connectors

Applications & Use Cases

Proven solutions across diverse industries. From aerospace to marine environments.

FAQ — C75700 Nickel Silver

Common engineering questions on C75700 nickel silver: composition, standards, properties and supply.

C75700, also called 65-12 nickel silver (CuNi12Zn24), is a wrought copper-nickel-zinc alloy with Cu 63.5–66.5%, Ni 11–13% and zinc the balance. The ~12% nickel gives it corrosion resistance and a silver-white finish without containing silver.
C75700 is covered by ASTM B122 (plate/sheet/strip), B149 (nickel-silver products), B151 (rod/bar) and B206 (wire). Pick the specification that matches the product form you need.
In annealed condition C75700 reaches about 350–450 MPa tensile strength with good ductility (35%+ elongation). Cold-worked tempers such as H04 raise strength to roughly 550–640 MPa while lowering elongation. Electrical conductivity is about 7–8% IACS, so it is not used as a conductor.
Springs, connectors, relay contacts, cutlery, decorative hardware, deep-drawn parts, keys and optical goods. Its formability and tarnish resistance suit both functional and decorative parts.
Linsy Copper supplies C75700 nickel silver against ASTM specs with per-order MTR/MTC, SGS on request, RoHS/REACH compliance, low-MOQ custom production and a 10–60 day lead time, with quote response within 1 hour.
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