Cunizn Copper Nickel Zinc Alloy Nickel Silver Alloy

Discover the superior quality of our Cunizn Copper Nickel Zinc Alloy Nickel Silver Alloy products. As a factory, we guarantee excellence and reliability.
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PRODUCTS DETAILS

Basic Info.

Model NO.
PCU37
Standard
ASTM
Lead Time
20 Days
Shipping Way
by Air, by Sea
Sample
Free
Transport Package
Wooden Box or Pallet
Specification
According to specification
Trademark
INT
Origin
China
HS Code
7409110000
Production Capacity
100ton/Month

Product Description

CuNiZn copper nickel zinc alloy Nickel Silver alloy
Nickel Silver Copper factory, more than 12 years manufacture experience, attained ISO9001, work on OEM and ODM projects..
Cunizn Copper Nickel Zinc Alloy Nickel Silver Alloy


 
1. Introduction of the C7701 C7521 Nickel Silver strip
C7701 C7521 Nickel Silver Alloys, also called Copper-Nickel-Zinc alloys,  which has good formability, good corrosion and tarnish-resistance performance, and this alloy has the pleasing silver-like color.


Cunizn Copper Nickel Zinc Alloy Nickel Silver Alloy

 
2. Grade and temper for C7701 C7521 Nickel Silver strip
 
Grade:  UNS.C77000, CDA770, CuNi18Zn27, JIS C7701, BZn18-27 ,CW410J
        UNS C75200, CDA752 , CuNi18Zn20, JIS C7521, BZn18-20, CW409J
Temper:  O(M), 1/4H(Y4), 1/2H(Y2), H(Y), HH(T)
 
3.  Chemical composition of C7701 C7521 Nickel Silver strip
C7701 Chemical Composition:
Cu: 54.0-58.00%
Ni: 16.5.00-19.5%
Fe: 0.25% Max.
Pb: 0.05% Max.
Mn: 0.50% Max.
Zn: Balance


C7521 Chemical Composition:
Cu: 62.0-66.00%
Ni: 16.5.00-19.5%
Fe: 0.25% Max.
Pb: 0.05% Max.
Mn: 0.50% Max.
Zn: Balance

Cunizn Copper Nickel Zinc Alloy Nickel Silver Alloy
Cunizn Copper Nickel Zinc Alloy Nickel Silver Alloy
Material Grade Chemical Composition  
    Be Ni Co Sn Mn Fe Pb Cu  
Nickel silver C7701 ~ 16.5-19.5 ~ ~ 0~0.5 0.25 0.05 54-58  
 
C7521 ~ 16.5-19.5 ~ ~ 0~0.5 0.25 0.05 62-66  
 
4. Dimension and tolerance of C7701 C7521 Nickel Silver strip
 
Thickness  mm Width  mm
≤200 >200~400 >400~600 >600~1000
Thickness tolerance / ± mm
Ordinary Level   Ordinary Level   Ordinary Level   Ordinary Level  
0.10~0.20 0.010   0.015   0.015   -  
>0.20~0.30 0.015   0.020   0.020   -  
>0.30~0.50 0.020   0.025   0.030   0.050  
>0.50~0.70 0.030   0.035   0.040   0.060  
>0.70~1.10 0.040   0.045   0.050   0.070  
>1.10~1.50 0.050   0.055   0.060   0.080  
>1.50~2.50 0.055   0.060   0.080   0.100  
 
5. Characteristics of C7701 C7521 Nickel Silver strip
 
Mechanical Properties
Alloy No
Quality
Grade

Tensile
Strength
(Kgf/mm

Elongation %

Hardness Test HV
C7521 O 38.5 20 ~
1/2H 45~58 5 120~180
H 55 3 150
C7701 1/2H 55~66 8 150~210
H 64~75 5 180~240
EH 72~82 ~ 240~260
SH 78~88 ~ 230~270
 
6. Application of C7701 C7521 Nickel Silver strip
C7701 C7521 Nickel Silver strip is mainly used in Liquid crystal oscillator component housing, medical machinery, slides for potentiometers, precision instruments, architecture, wind instruments, etc.



Cunizn Copper Nickel Zinc Alloy Nickel Silver Alloy


 
 
7. Manufacture plant of C7701 C7521 Nickel Silver strip
Cunizn Copper Nickel Zinc Alloy Nickel Silver Alloy
8. Tests and inspection for C7701 C7521 Nickel Silver strip
Test instrument : Metallographic Microscope; Digital Light Processor; Strength Tester; Hardness Tester.

Cunizn Copper Nickel Zinc Alloy Nickel Silver Alloy

 
9. Quality control process for C7701 C7521 Nickel Silver strip


Cunizn Copper Nickel Zinc Alloy Nickel Silver Alloy




10. Packing and shipping for C7701 C7521 Nickel Silver strip

  Packing:
 First wrapped by anti-rust paper, second wrapped by plastic film, then packed by wooden box or wooden pallet ..

Cunizn Copper Nickel Zinc Alloy Nickel Silver Alloy




Shipping:
We will choose the best way according to customer's requests.
1. By Air, to the indicated airport.

2. By Express (FedEx, UPS, DHL, TNT, EMS), to the indicated address.
2. By Sea, to the indicated sea port.

Cunizn Copper Nickel Zinc Alloy Nickel Silver Alloy


 
11. Questions and Answers

a1. Do you have ISO certificate?
Yes, we obtained ISO9001

a2. How long is your delivery time for C7701 C7521 Nickel Silver strip ?
If the master coil is available,  3-7 days do slitting will be ready , if not, will need 20-25 days for new production.

a3. Can you help us to choose suitable material?
 Yes, we can recommend the most suitable material according to your application.

a4. How do you control quality?
We produce strictly according to customer's drawings and requests, here are strict control plan in every process, full check of each parts, strive to provide customer 100% quality products, ROHS/SGS test report, material certificate are available.

a5. Do you provide sample? Free or charge?
Yes, if the sample in stock available, free of charge, if not, need to charge some mfg cost.
 

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