CuNi18Zn20 Copper Based Alloys Wire High Toughness For Flexible Terminal
CuNi18Zn20 Maillechort C7521German Silver Wire/Strip/Bar/Ribbon
C7521(CuNi18Zn20),has,many,features:good color, high toughness,high strength,high stability,excellent elasticity with fine silver gloss,good fatigue, rust and corrosion resistance properties.C7521 and C7541 have very good deep-drawing performance.
C7521can,be,applied,to,shielding material for communication electronics,antenna material,EMIshielding material,spring contact,flexible terminal, environmentallyfriendly plating-free electronic parts and components,quartz oscillator,high-level material,electric material.
1. Product Details![]()
1)Normal composition:
| Cu | Ni | Zn | Mn | Fe | Pb |
| 62-66% | 16.5-19.5% | Bal. | 0-0.5% | <0.25% | <0.10% |
2)Typical Mechanical Properties:
| Grade | State | Hardness(HV) | Tensile Strength (N/MM2) | Elongation(%) |
| C7521 | 0 | - | ≥375 | ≥20 |
| 1/2H | 120-180 | 440-570 | ≥5 | |
| H | 150-210 | 540-640 | ≥3 | |
| EH | ≥185 | ≥610 | - |
3)Typical Physical Properties:
| Density (g/cm3) | 8.73 |
| Electrical Conductivity (%IACS) | 6 |
| Thermal Conductivity W/(M.K) | 32 |
| Modulus of elasticity (GPa) | 125 |
| Specific Heat J/(g.K) | 0.34 |
4)Fabrication Properties:
| Cold-workability | Machinability | Electric Plating Property | Hot Dip Tin Plating Property | Weldability | Corrosion |
| Excellent | Suitable | Excellent | Excellent | Good | Excellent |
5)Supply Style:
| Alloy Type | Type | Dimension | |
| C7521W | Wire | D=0.03mm-8.0mm | |
| C7521R | Ribbon | W=0.4mm-40mm | T=0.03mm-2.9mm |
| C7521S | Strip | W=8.0mm-250mm | T=0.1mm-3.0mm |
| C7521F | Foil | W=6mm-120mm | T=0.003mm-0.1mm |
| C7521B | Bar | W=8.0mm-100mm | L=50mm-1000mm |
2. Production Progress
3. Our Service
5. Question and Answer
Q1: How can I contact with your company?
A1:We have multiple communication channels : Tel/ :+86-15826530281
Q2: Do you provide free samples?
A2:Yes,we can provide free samples for your testing,but buyer should bear the shipping costs.
Q3: What is your payment terms?
A3:30% in advance,balance after receiving the copy of B/L. T/T,L/C,,Paypal is OK.
Q4: What is your lead time?
A4:On normal condition,the lead time is 7 days after the payment. Special order or quantity is subject to the negotiation.
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