Nickel silver alloy provides effective protection against electromagnetic interference due to its good electrical conductivity and high magnetic permeability to make PCB Shield Can
We offer two types of Nickel silver alloy for Shield can:
Nickel Silver C7701
C7701 is the most commonly used material for foldable EMI shielding cans, its excellent ductility, mechanical strength, and corrosion resistance. It is especially suitable for designs requiring multiple processes such as stamping, folding, and soldering
Nickel Silver C7521
C7521 nickel silver offers excellent deep-drawability and ductility, making it highly suitable for deep-drawn shielding can structures. This allows for the creation of seamless, robust enclosures with improved EMI shielding performance and reduced signal leakage from joints.
Nickel Silver Alloy Designations in Different Standards
| China Standard | US Standard | Japan Standard | Germany Standard | UK Standard | ISO 1634 |
|---|---|---|---|---|---|
| GB-BZn18-18 | UNS-C75200 | JIS C7521 | CuNi12Zn24 | NS104 | CuNi18Zn20 |
| GB-BZn18-26 | UNS-C77000 | JIS C7701 | CuNi18Zn20 | NS103 | CuNi12Zn24 |
Nickel Silver Chemical composition
| Material | Cu | Ni | Fe | Zn |
|---|---|---|---|---|
| C7521 | 63.0-66.5 | 16.5-19.5 | ≤0.15 | remainder |
| C7701 | 53.5-56.5 | 16.5-19.5 | ≤0.15 | remainder |
Nickel Silver Mechanical performance
| Nickel Silver | Density g/cm3 | %IACS | Gpa | EC W/(m·K) | CTE ×10-6/K |
|---|---|---|---|---|---|
| C7521 | 8.7 | 6.0 | 125 | 33 | 16.2 |
| C7701 | 8.7 | 5 | 125 | 29 | 16.7 |
Nickel Silver With Tin plated ,SUS , Aluminum
| Material | Conductivity | Cost | Formability | Corrosion Resistance | Shielding Effectiveness |
|---|---|---|---|---|---|
| Tin-Plated Steel | Medium | Low | Average | Average | Average |
| Aluminum | High | Medium | Average | Average | Medium |
| Nickel Silver | High | Mid-High | Good | Excellent | Excellent |
| SUS | Medium | Medium | Average | Average | Average |
Application Examples
SMD Shielding Cans
Miniature shielding cans for smart devices, providing localized EMI protection.
Removable or Soldered Shielding Covers
Used in communication and automotive electronics, allowing easy assembly and maintenance.
Multi-Cavity Shielding Design
Customized to isolate functional circuit areas, enhancing overall electromagnetic compatibility (EMC).
Environmental and Regulatory Compliance
Nickel silver alloys are generally compliant with environmental standards such as RoHS and REACH, making them a widely accepted eco-friendly choice in the electronics industry.