Product Description
Cupronickel alloys are widely used for marine applications due to their excellent resistance to seawater corrosion, low biofouling rates, and good fabricability. They have provided reliable service for decades while offering effective solutions to today's technological challenges addition of nickel to copper improves strength and corrosion resistance while allowing the alloy to remain ductile.
Alloy C72500: Developed by Bell Laboratories to solve issues of stress corrosion found in field parts. The alloy blends the strength of Phosphor Bronze and the Corrosion resistance of Nickel Silver without too much loss of electrical conductivity. A combination of very good fatigue strength and resistance to corrosion and tarnish have also made this alloy an excellent choice for other applications found in corrosive environments or applications requiring improved solderability.
Chemistry Typical
COPPER NICKEL LEAD IRON ZINC OTHER
C70600 Balance 9.0 - 10.0* 0.05 max 1.0 - 1.8 1.0 max 1.0 Mn max
C71500 Balance* 29.0 - 33.0 0.05 max 0.40 - 1.0 max 1.0 max 1.0 Mn max
C72500 Balance 8.5 - 10.5* 0.05 max 0.6 max 0.50 max | 1.8 - 2.8 Sn, 0.20 Mn max
Physical Properties
Typical Density: 0.321 - 0.323 lbs/in3, 8.88 - 8.94 g/cm3
Electrical Conductivity: (% IACS at 68° F 20°C, annealed): 4.6 - 11 %
Mean Coefficient of Thermal Expansion: µin/in-° F:
68 - 572 ° F: 8.5 - 9.2
Thermal Conductivity: BTU-in/hr-ft2-° F at 68 ° F: 17 - 31
Modulus of Elasticity: KSI
18 - 22 x 103 in tension
Applications
Cupronickels Alloys: Condensers; Evaporator and heat exchanger application; Ferrules; Applications where biofouling is a concern; Silver colored coinage.
Copper-Nickel-Tin Alloys: Relay springs; Switch springs; Lead frames; Telecommunication connectors
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→FAQ
Do you make customized products based on our design drawings?
Yes, we are a professional metal manufacturing factory with an experienced engineering team that can customize products according to customers' drawings.
How long is your delivery time?
It depends on the quantity and difficulty of the product. Usually our turnaround time is 15-20 days.
How can I get a quote from your company?
In order to quote your soon as much soon as possible, please provide us with the following information: 1) Detailed drawings (CAD / PDF / DWG / IGS / STEP, etc.) 2) Materials 3) Quantity 4) Surface treatment 5) Any special packaging or other requirements .
I have samples but no drawings, what should I do?
Please send us some sample photos and we will evaluate them. If we can produce, we will ask you for samples and make drawings according to your samples.
What guarantee do you offer?
Good after-sales service-the way customers complain.
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Zhongyi Metalware (Tianjin) Co., Ltd
Add:Room 08-288, Row 4, Old Government Courtyard, Yangwang Highway, Huanghuadian Town, wuqing District, Tianjin
Tel:+86 173 6217 8900
E-mail:info@zysdsteel.com