Hardness testing to ISO 6508-1
Cupro Nickel 70/30 Flat & Spring Washer, also known as Copper Nickel 70/30 or C71500, is a copper alloy that contains 70% copper and 30% nickel. It is a popular choice for various industrial applications, including marine, offshore, and power generation, due to its exceptional corrosion resistance, high thermal conductivity, and excellent mechanical properties. Flat washers and spring washers made from Cupro Nickel 70/30 offer numerous advantages in these demanding environments.
Flat Washers: Flat washers are essential components used to distribute the load of a fastener, such as a bolt or nut, over a larger surface area. Cupro Nickel 70/30 flat washers are highly sought after for their exceptional corrosion resistance, making them ideal for applications where exposure to saltwater or brackish environments is common. They resist not only general corrosion but also crevice and stress corrosion cracking.
The thermal conductivity of Cupro Nickel 70/30 is another important characteristic. This makes it an excellent choice for heat exchanger applications, as it efficiently transfers heat. Additionally, its resistance to biofouling, or the accumulation of microorganisms and marine life, further enhances its suitability for marine and offshore applications.
Spring Washers: Spring washers, also known as lock washers, are used to provide tension and prevent loosening of fasteners due to vibration or other forces. Cupro Nickel 70/30 spring washers are highly durable and maintain their mechanical properties even in harsh conditions. The 70% copper content provides excellent ductility, allowing these washers to withstand extreme stress and pressure without deformation.
|Standard||:||ASTM B151 / SB151|
|Dimension||:||ASTM,DIN, BS,GB, IS and all International Standards|
|Length||:||3 mm to 200 mm|
|Washer Size||:||M3 - M56 | 3/6" to 2" | Custom Sizes|
|Heat Treatment||:||Annealing, Stress Relieving, Case Hardening, Quenching and Tempering.|
|Type||:||Plain Washer, Spring Washer, Tooth Washer, Tapper Washer, Tab Washer, Star Washer etc.|
The 30% nickel content contributes to the spring washers' resistance to corrosion, even in aggressive saltwater environments. This makes them perfect for critical applications in marine and offshore industries, where fastener failure can have serious consequences.
To preserve the high standards of our selection of industrial washers, we have always adhered to a systematic quality management process.
Our staff of experts is vibrant and talented, and they have always been our largest supporters and contributors to our success. Our vision is to create a world of washers.
|Copper Nickel 70/30||2.0882||C71500|
|Cu-Ni 70-30||65.0 min||1 max||.05 max||29-33||0.4-1.0||1 max|
|Element||Density||Melting Point||Tensile Strength||Yield Strength (0.2%Offset)||Elongation|
|Copper Nickel 70-30||0.323 lb/in3 at 68 F||2260 F||50000 psi||20000 psi||30 %|
Hardness testing to ISO 6508-1
Nut proof load testing to ISO 898-2
Suitability for preloading to EN 14399-2
Calibrated gauges and tools
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