COPPER NICKEL 70/30 / CUPRO NICKEL UNS C71500 / CUNI10FE1MN
Copper Alloy 70 / 30 is a copper-nickel alloy consist of 70% copper, 30% nickel alloy with additions of iron and manganese. It exhibits excellent resistance to corrosion and erosion. It is strong and ductile. 70 30 Cu Ni exhibits outstanding resistance to general and impingent attack by clean sea water. however, subject to bio-fouling at low velocities.
Cu-Ni 70 30 is majorly used in heat exchangers and unfired pressure vessels widely combined with high velocities and turbulence are serious problems. Copper-nickel 70/30 compounds can be welded utilizing covered metal circular segment welding, butt welding, binding and oxyacetylene welding forms.
CU-NI UNS C71500 CHEMICAL COMPOSITION
| Element | Min/Max | Nominal |
| Cu | Rem | 65.0 |
| Fe | 0.40-1.0 | 1.4 |
| Pb | 0.05 | – |
| Mn | 1.0 | – |
| Ni | 29.0-33.0 | – |
| Zn | 10.0 | – |
COPPER NICKEL UNS C71500 MECHANICAL PROPERTIES :
| Form | Temper | Temper Code | Tensile Strength (ksi) | YS-0.5% Ext (ksi) | Elongation (%) | Rockwell B scale | Rockwell F scale | Section Size (in) | Cold Work (%) |
| Flat Products | As Hot Rolled | M20 | 55 Typ | 20 Typ | 45 Typ | 35 Typ | 1 | ||
| Rod | 1/2 Hard | H02 | 75 Typ | 70 Typ | 15 Typ | 80 Typ | 1 | 20 | |
| Tube | Nominal Grain Size 0.025 mm | OS025 | 60 Typ | 25 Typ | 45 Typ | 45 Typ | 80 Typ | ||
| Nominal Grain Size 0.035 mm | OS035 | 54 Typ | 45 Typ | 36 Typ | 77 Typ |
CUPRO NICKEL UNS C71500 PHYSICAL PROPERTIES :
| Melting Point – Liquidus°F | 2260 |
|---|---|
| Melting Point – Solidus°F | 2140 |
| Densitylb/cu in. at 68°F | 0.323 |
| Specific Gravity | 8.94 |
| Electrical Conductivity% IACS at 68°F | 4.6 |
| Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F | 17 |
| Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F) | 9 |
| Specific Heat CapacityBtu/ lb /°F at 68°F | 0.09 |
| Modulus of Elasticity in Tensionksi | 22000 |
| Modulus of Rigidityksi | 8300 |
SPECIFICATIONS AND DESIGNATIONS
| STANDARD | WERKSTOFF NR. | UNS |
| Copper Nickel 70/30 | 2.0882 | C71500 |
AVAILABLE TYPES OF COPPER NICKEL 70/30 / UNS C71500 GRADES PRODUCTS
COPPER NICKEL 70/30 PIPES & TUBES
COPPER NICKEL 70/30 FLANGES
COPPER NICKEL 70/30 PIPE FITTINGS
COPPER NICKEL 70/30 FORGED FITTINGS
COPPER NICKEL 70/30 FASTENERS
COPPER NICKEL 70/30 TUBE FITTINGS
COPPER NICKEL 70/30 ROUND BARS
