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Cuni2si Uns C64700 / C70250 Copper Nickel Silicon Alloys

Posted at: Offers to Sell and Export | Posted on: Mon 29 Nov, 2010 8:46 am |
cuni2si uns c64700 c70250 copper nickel silicon alloys
Products Photos CatalogCuni2si Uns C64700 Photos Catalog

CuNi2Si---UNS.C64700/C70250 Nickel Silicon Bronze Alloys, which is an age-hardening alloy, higher alloyed

in comparison with CuNi1.5Si, for current-carrying formed parts. It has an a-structure with very fine precipitations and recommends itself both for lead frames which require a high rigidity of the pins and for connector with high demands on the electrical conductivity, strength and relaxation behavior. In addition, the CuNi2Si can also be used for current-carrying formed parts and contact springs due to its good fatigue strength, forming and spring properties.

Typical Application for C64700/C70250 Nickel Silicon Bronze Alloys:

Electrical : Resistance Welding Electrodes, Motor Rotor Bar, And Resistance Welding Tips.

Fastener : Fastener parts

Industrial : Brazing Rod, Welding Rod

Available Sizes:

Custom Diameter & Sizes, Random Mill lengths

Available Products (forms):

Round bars, Flat bars, Square bars, Rectangular bars, Hexagon bars

Custom shapes are available upon request.

Chemical Composition:

Ni: 1.60-2.20%

Si: 0.40-0.80%

Fe: 0.10% Max.

Zn: 0.50% Max.

Cu: Balance

Note: Copper plus additions equal 99.50% minimum.

Typical Physical Properties:

Specific Gravity: 8.80-8.90 g/cm3

Coefficient of Thermal Expansion per C: 17 x 10-6 /K (20-300C)

Electrical Conductivity (% IACS): 38 (22 Ms/m)

Thermal Conductivity (W/mk): 250

Modulus of Elasticity (10 3 MPA): 130


1). the units are based upon US Customary.

2). the typical physical properties apply to age hardened products.

International Specification:

Rods/Bars/Plates/Sheets: UNS.C64700, UNS.C70250, RWMA Class 3

European Standards: CuNi2Si, DIN 2.0855, CW111C to EN


ASTM: American Society for Testing and Materials

RWMA: Resistance Welder Manufacturers' Association

Note: Unless otherwise specified, material will be produced to DIN & RWMA.

Mechanical Properties:

The detailed Mechanical Properties will be available on request from customers.

Company Contact:

No member photo
Contact Name: Jane
Company Name: ALB (xiamen) Material Company Limited
Email: Email
Tel: 86-0592-5607665 or 86-592-5631276
Fax: 86-0592-5607657
Street Address: Rm801-803, Zian
Pavilion, No.186, Huarong Road, Huli
District, Xiamen, China
Website: http://www.alb-copperalloys.com
Member name: Janezhang1989
Country: China-CN China
Member Since: 11 October 2010
Total Leads: 9 Janezhang1989 Import Export Business Leads
Business focus: Beryllium Copper Alloys, High Conductivity Copper Alloys, Resistance Welding Alloys. Silicon Bronze Alloys, Copper Nickel Silicon Alloys, Bar, Plate
Verify: Safe Import Export Tips

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