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nickel silver strip
Grade:C7541 C7521 C7701
Form: sheet / plate / strip / bar / rod
Cu-Ni-Zn alloy
Excellent corrosion resistance
good mechanical strength
C7701 C7541 C7521 nickel silver strip
high precision nickel silver strips or bart: JIS alloy No: C7521, C7701, C7541, C7451...
Parameter for Nickel Silver Strips/Copper Nickel Zinc Strips:
| Alloy No. | Chemical Composition | |||
| Cu | Mn | Ni | Zn | |
| C7521 | 62.0-66 | 0-0.5 | 16.5-19.5 | Remainder |
| C7541 | 60.0-64 | 0-0.5 | 12.5-15.5 | Remainder |
| C7701 | 54.0-58 | 0-0.5 | 16.5-19.5 | Remainder |
C7521 Nickel Silver Strip
CuNi18Zn20 – UNS.C75200 Zinc Cupronickel Alloys
C7521 (CuNi18Zn20) - UNS.C75200 Nickel Silver Alloys, also called Copper - Nickel - Zinc alloys, 65 - 18 - 18 respectively,
which has good formability, good corrosion and tarnish - resistance performance, and this alloy has the pleasing
silver - like color.
Available Products (forms):
Strip, Plate, Wire, Round bars, Flat bars, Square bars, Rectangular bars, Hexagon bars
Chemical composition
Articles | Chemical composition | |||||
GB | UNS | EN | JIS | Cu% | Ni% | Zn% |
BZn18-18 | C75200 | CuNi18Zn20 | C7521 | 62-66 | 16.5-19.5 | Rem |

Physical properties
Physical properties | fabrication properties | |||||||||
density g/cm3 | electrical conductivity %IACS | thermal conductivity W/(m.K) | modulus of elasticity GPa | specific heat J/(g.K) | cold-workability | machinability | electric plating property | hot dip tin plating property | weldability | corrosion |
8.73 | 6 | 32 | 125 | 0.34 | excellent | suitable | excellent | excellent | good | excellent |
Mechanical properties
Mechanical properties | |||||||
State | Hardness HV | Tension test | bending test | ||||
Thickness mm | Tensile strength MPa | elongation % | thickness | angles | ID | ||
0 | - | 0.1-5.0 | ≥375 | ≥20 | ≤1.6 | 180° | sticking closely |
1/2H | 120-180 | 0.1-5.0 | 440-570 | ≥5 | ≤1.6 | 180° | 100% of thickness |
≤0.5 | 200% of thickness | ||||||
H | 150-210 | 0.1-0.15 | 540-640 | - | ≤1.6 | 180° | 200% of thickness |
>0.15-5.0 | ≥3 | ≤0.5 | 400% of thickness | ||||
EH | ≥185 | 0.1-5.0 | ≥610 | - | - | - | - |
Features for Nickel Silver Strips/Copper Nickel Zinc Strips:
1) Good color
2) High toughness
3) High strength
4) High stability
5) Excellent elasticity with fine silver gloss
6) Good fatigue
7) Rust and corrosion resistance properties
8) C7521 and C7541 have very good deep-drawing performance
Applications for Nickel Silver Strips/Copper Nickel Zinc Strips:
1) Shielding material for communication electronics
2) Antenna material
3) EMI-shielding material
4) Spring contact
5) Flexible terminal
6) Environmentally-friendly plating-free electronic parts and components
7) Quartz oscillator
8) High-level material
9) Electric material





Payment
1)You may pay by PayPal /Western Union or T/T;
2)30% deposit and 70% balance for large order quantity.
Shipping
1). Delivered by DHL, EMS, UPS, FedEx, TNT or HK air mail .
2). 3-7 working days delivery after payment
3). Proper lower customs value is accepted to write on commercial invoice to avoid paying import tax for buyer.
4).Offer the tracking number to customers.
Q1.Can I have a sample order?
A: Yes, welcome to place sample orders to test and check our quality.
Q2.Do you have any MOQ limt?
A: Our E-cigarettes wire’s MOQ is 1 kg.
Q3.Information needed if I want a quotation?
A Name, Standard, Material Grade(Chemical Composition), Size Quantity, Weight.
Q4. Can we visit your company/factory before place the order?
A. Yes. Welcome anytime
Q5: How does your factory do regarding quality control?
A. Quality is priority. We always attach great importance to quality controlling from beginning to end.
Q6:. How to proceed the order if I have logo to print?
A: 1) Please send us the logo files, once receiving your payment(large order 30%), we will arrange to design the logo;
2)After received your confirmation of the logo, we will do sample and send it to you for checking;
3) If you confirm the sample is ok, we will produce the mass;
4) Once ready, please pay the rest payment and we will send out goods ASAP and tell you the tracking number;
How to contact us?
Send your inquiry details in the below for free sample, click "send" now.

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