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| Categories | Copper Based Alloys |
|---|---|
| Brand Name: | OHMALLOY |
| Model Number: | C7521 |
| Certification: | ISO ROHS |
| Place of Origin: | China(Shanghai) |
| MOQ: | 50kg |
| Price: | negotiable |
| Payment Terms: | , L/C, T/T |
| Supply Ability: | 20000T/Year |
| Delivery Time: | 7-20days after your deposit received |
| Packaging Details: | IN Wooden box |
| Standard: | ASTM B122 |
| Surface: | Bright |
| Power or not: | Not |
| Type: | Cu-Ni-Zn |
| Craft: | Hot forging& Cold Rolling |
| Shape: | Foil&Strip |
| DIN: | 2.0740 |
| JIS: | C7521 |
| UNS: | Bzn 18-18 |
| Company Info. |
| Ohmalloy Material Co.,Ltd |
| Verified Supplier |
| View Contact Details |
| Product List |
Copper Nickel silver alloy strip C77000/C7701 strip/sheet
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.
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,fabrication 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
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
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
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