C70400
C70400 - Copper Nickel 95/5
The C70400 Copper-Nickel alloy is excellent on hot and cold workability and is resistant towards atmospheric, brackish water, sea water and non-oxidizing acid corrosion.
Typical Use
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Industrial: Condensers, Condenser Plates, Evaporator Tubes, Ferrules, Heat Exchanger Tubes, Corrosion Resistant Corrosion Resistant, Petrochemicals, Salt Water, Erosion and Impingement, Moderate Strength, Retains Strength at High Temperatures.
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Marine : Condenser Intake Systems, Salt Water Piping
Specifications
| SPECIFICATIONS | DESIGNATION |
| ISO | CuNi5Fe1Mn |
| BS | CN 101 |
| Russian | MNZ5-1 |
Chemical Composition
| Cu | Fe | Pb | Mn | Ni | Zn | |
| Min/Max | Rem | 1.3 – 1.7 | 0-.05 | 0.3-0.8 | 29.0 – 33.0 | 0-1.0 |
Common Fabrication Processes
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Forming and Bending
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Welding
Therma Properties
| Treatment | Minimum* | Maximum* |
| *Measured in Fahrenheit | ||
| Annealing | 1050 | 1500 |
| Hot Treatment | 1500 | 1750 |
Mechanical Properties
| Form | Temper Code |
Tensile Strength (ksi) | YS-0.5% Ext (ksi) | Elongation (%) | Rock well B scale |
Rock well F scale |
Rock well 30T scale |
YS- 0.2% Offset |
| Strip | H02 | 57 Typ | 11 Typ | 67 Typ | 65 Typ | 55 Typ | ||
| H01 | 51 Typ | 21 Typ | 54 Typ | 57 Typ | 40 Typ | |||
| O61 | 38 Typ | 12 Typ | 41 Typ | 8 Typ | ||||
| H06 | 70 Typ | 3 Typ | 75 Typ | 69 Typ | 69 Typ | |||
| H04 | 64 Typ | 5 Typ | 72 Typ | 68 Typ | 63 Typ | |||
| H08 | 77 Typ | 2 Typ | 76 Typ | 70 Typ | 76 Typ | |||
| Tube | H55 | 48 Typ | 36 Typ | 18 Typ | 67 Typ | |||
| OS025 | 41 Typ | 14 Typ | 46 Typ | 58 Typ | ||||
| * Measured at room temperature, 68°F (20°C). | ||||||||
Physical Properties
| Melting Point – Liquidus°F | 2050 |
| Densitylb/cu in. at 68°F | 0.323 |
| Specific Gravity | 8.94 |
| Electrical Conductivity% IACS at 68°F | 14 |
| Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F | 37 |
| Coefficient of Thermal Expansion 68-57210?6 per °F (68 – 572°F) |
9.7 |
| Specific Heat CapacityBtu/ lb /°F at 68°F | 0.09 |
| Modulus of Elasticity in Tensionksi | 17000 |
| Modulus of Rigidityksi | 6400 |
Fabrication Properties
| Technique | Suitability |
| Soldering | Excellent |
| Brazing | Excellent |
| Oxyacetylene Welding | Fair |
| Gas Shielded Arc Welding | Excellent |
| Coated Metal Arc Welding | Good |
| Spot Weld | Good |
| Seam Weld | Good |
| Butt Weld | Good |
| Capacity for Being Cold Worked | Excellent |
| Capacity for Being Hot Formed | Good |
| Machinability Rating | 20 |
Specification
| Form | Application | System | Standard | Description |
| Pipe | ASTM | B466 | Seamless Copper-nickel Pipe And Tube | |
| Tube | Condenser Tube | ASME | SB111 | Copper And Copper Alloy Seamless Condenser Tubes & Ferrule Stock |
| ASME | SB359 | Copper & Copper Alloy Seamless Condenser & Heat Exchanger Tubes With Integral Fins |
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| ASME | SB466 | Seamless Copper-nickel Pipe And Tube | ||
| ASME | SB543 | Welded Copper And Copper Alloy Tube | ||
| Condenser Tube | ASTM | B111 | Copper And Copper Alloy Seamless Condenser Tubes And Ferrule Stock | |
| ASTM | B359 | Copper And Copper-alloy Seamless Condenser And Heat Exchanger Tubes With Integral Fins |
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| ASTM | B395 | U-bend Seamless Copper And Copper Alloy Heat Exchanger And Condenser Tubes |
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| ASTM | B466 | Seamless Copper-nickel Pipe And Tube | ||
| ASTM | B543 | Welded Copper And Copper Alloy Heat Exchanger Tube |
