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COPPER-NICKEL ALLOYS
Copper-Nickel alloys are recognized primarily for their ability to withstand seawater corrosion, erosion and biofouling and therefore are widely used in marine and offshore industries.
C70600 - (90-10) Copper-Nickel is widely used in marine applications where resistance to both corrosion and biofouling is important.
C71500 - (70-30) Copper-Nickel is preferred to 90-10 Copper-Nickel where corrosion and temperature conditions are more severe.
COPPER-NICKEL TEMPERS
060 - Soft (Sheet/Rod)
061 - Annealed (Tube)
H01 - Hard (Sheet/Rod)
M20 - Soft (Plate)
M20 - Hard (Plate)
Features:
High tensile strength
Resistance to biofouling
Corrosion resistance
Easy installation
Chemical Composition:
| Grade | Cu | Pb | Fe | Zn | Mn | Ni+Co |
| C70400 | Balance | ≤0.05 | 1.3-1.7 | ≤1.0 | 0.3-0.8 | 4.8-6.2 |
| C70600 | Balance | ≤0.05 | 1.0-1.8 | ≤1.0 | ≤1.0 | 9.0-11.0 |
| C70620 | ≥86.5 | ≤0.02 | 1.0-1.8 | ≤0.50 | ≤1.0 | 9.0-11.0 |
| C71000 | Balance | ≤0.05 | 0.5-1.0 | ≤1.0 | ≤1.0 | 19.0-23.0 |
| C71500 | Balance | ≤0.05 | 0.4-1.0 | ≤1.0 | ≤1.0 | 29.0-33.0 |
| C71520 | ≥65.0 | ≤0.02 | 0.4-1.0 | ≤0.50 | ≤1.0 | 29.0-33.0 |
Specifications:
| 90/10 Copper Nickel | ASTM B 111 C 70600 ASME SB 111 C 70600 BS 2871 Part 3 CN 102 EN 12451 CuNi10 Fe 1Mn NFA51 102 CuNi10 Fe1Mn JIS H 3300 C 7060 | ||||
| 95/5 Copper Nickel | ASTM B 111 C 70400 ASME SB 111 C 70400 BS 2870 CN 101 ISO 1635 CuNi5Fe1MN JIS C 2532 GCN10 | ||||
Mechanical Property:
| Temper | Tensile Str. | Yield Str. | Elong. | Rockwell | |||
|---|---|---|---|---|---|---|---|
| B | C | F | 30T | ||||
| H55 | 331MPa (48ksi) | 248MPa (36ksi) | 18% | - | - | 67 | - |
| OS025 | 283MPa (41ksi) | 97MPa (14ksi) | 46% | - | - | 58 | - |
The chemical composition of UNS C70400 copper alloy is outlined in the following table.
| Elements | Content (%) |
|---|---|
| Nickel, Ni | 4.8-6.2 |
| Iron, Fe | 1.3-1.7 |
| Zinc, Zn | 1.0 |
| Manganese, Mn | 0.30-0.8 |
| Lead, Pb | 0.05 |
| Copper, Cu | Remainder |
Equivalent materials to UNS C70400 copper alloy are given in the table below.
| ASME SB111 | ASME SB359 | ASME SB395 | ASME SB466 | ASTM B466 |
| ASME SB543 | ASTM B111 | ASTM B359 | ASTM B395 | ASTM B543 |
Name | Type | Common Name |
Wrought | Copper nickel, 5% | |
Wrought | Copper nickel, 10% | |
Wrought | Copper nickel, 20% | |
Wrought | Copper nickel, 30% | |
Wrought | Copper nickel | |
Wrought | Copper nickel | |
Wrought | Copper nickel | |
Wrought | Nickel silver copper, 72-18 | |
Wrought | Nickel silver copper, 65-10 | |
Wrought | Nickel silver copper, 65-18 | |
Wrought | Nickel silver copper, 65-15 | |
Wrought | Nickel silver copper, 65-12 | |
Wrought | Nickel silver copper, 59-12 | |
Wrought | Nickel silver copper, 55-18 | |
Wrought | Leaded nickel silver copper, 65-8-2 |
