Nascent Pipe & Tubes is a known producer of Copper Nickel 70 / 30 Washers, which is offered at leading market rates to our patrons. We can offer you Cu-Ni 70 / 30 Flat Washers (C71500) cut to your specifications through our precision plate saws, bar saws, shears and water jets.
Another application of Cupro Nickel 70 / 30 Lock Washers is in the electrical engineering space where it can be used in the production of heating cables, anodes for television tubes and electric resistors.
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The alpha dendrites in the cast structures of Copper Nickel 70 / 30 Sealing Washers contain a large amount of nickel starting from the center up to the edge of the dendrite. Another common use of Cu-Ni 70 / 30 Split Washers is in silver – coloured modern – circulated coins which are a typical mix of 75 % copper, 25 % nickel, and a trace amount of manganese.
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Cupro Nickel 70 / 30 Slot Washers is often used in Factors; Development; Resistance; Reasoning; Microfouling; Tubing, Cladding and Offshore Structures; Removal; Effects on Corrosion; Effects on Plant Operations. Our clients can purchase Copper Nickel 70 / 30 Machine Washers in a mass amount from us at reasonable rates, which can also further cut to your requirements along with custom forgings made to your requirements. Cu-Ni 70 / 30 Star Washers is the most commonly used wrought copper alloy for marine engineering and can be found in seawater systems for naval.
Cu-Ni Alloy 70/30 Washer Specifications
| Specifications |
ASTM |
| Standard |
ASTM B151, B152 |
| Length |
M02 to M30 |
| Size |
M10 to M100 |
| Type |
Flat Washer, Lock Washer, Sealing Washer, Split Washer, Slot Washer, Machine Washer, Star Washer SPRINGS – Wire Spring & Flat Spring |
Copper Nickel Cu 70/30 Washers Chemical Composition
| Cu-Ni 70/30 |
Cu |
Pb |
Mn |
Fe |
Zn |
Ni |
| 88.6 min |
0.05 max |
1.0 max |
1.8 max |
1 max |
9-11 max |
Cu-Ni 70/30 Washer Mechanical Properties
| Density |
Melting Point |
Yield Strength (0.2%Offset) |
Tensile Strength |
Elongation |
| 8.1 g/cm3 |
1443 °C (2430 °F) |
Psi – 35,000, MPa – 241 |
Psi -80,000, MPa -551 |
30 % |
Equivalent Grades for Copper Nickel 70/30 Washer
| STANDARD |
UNS |
WERKSTOFF NR. |
| Cupro Nickel 70/30 |
C71500 |
2.0882 |
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