Copper Nickel 70/30

Copper Nickel 70/30 suppliers

Copper Nickel Alloy 70/30 price in Mumbai, Cupro-nickel alloy 715, Cupro Nickel 70/30 Products stockist

Copper Nickel 70/30 suppliers

Copper Nickel 70/30

Cupro Nickel 70/30 Products

Cupro Nickel 70/30 Products

70 30 Cuni Material

70 30 Cuni Material

C71500 Copper Nickel "70/30" (CDA 715)

ASTM B151, ASTM B466, ASTM B111, ASTM B171, ASME SB466, ASME SB111, ASME SB151, ASME SB171, DIN 2.0872, BS 2871 CN102, EN CW352H, MIL-C-1726F, MIL-C-24679, MIL-T-16420K

Copper nickel 70 30 thermal conductivity is 29 W/(m·K). The Elongation at Break of Copper nickel (rolled-H04 for flat products/hard drawn-H80 for tubing), is 11.00% and its Elongation at Break (annealed), is 40%. The Density of 70/30 Copper nickel is 0.323 lb/in³ (8.94 g/cm3). Cupro Nickel 70/30 contains 70% copper and 30% nickel. It also has a small amount of manganese and iron in it, making it more resistant to erosion and corrosion. The resistance of 70/30 CuNi has been found to be much better in polluted seawater and in high-velocity waters (up to 4.5m/s). Related Specifications of 70/30 are C71500, DEF STAN 02-879 Annex B, BS2874, CuNi30Mn1Fe, CN107, NES780, DGS320, C71520, EN 12164, CW354H, ASTM B151, DEF STAN 02-780 and 2.0882.

Cu-Ni 70/30 has a Poisson’s Ratio of 0.325. The most popular specifications of 70/30 are the C71500 and CN107 designations. 70/30 Copper nickel is used in salt water piping and pipe fittings, refrigerator and condenser components, weld wire and boiler parts, salt water flanges, heat exchanger and cooling plants, welding backing rings, etc. Copper nickel 70/30 price can be easily determined by going online and searching for the same. Copper nickel has a Tensile Strength of 359 MPa (52000 psi). The Shear Modulus of Copper nickel is 57.2 GPa (8300 ksi). CuNi is the Molecular Formula of Copper nickel. Copper Nickel 70/30 can be readily welded, fabricated and cold worked, without the use of any special materials.

Copper Nickel 70/30 Products

Send Enquiry

Copper Nickel 70/30 price

US $10.00-$40.00 / Kilogram

Above is an approx price, please contact for final price of Copper Nickel 70/30

Copper Nickel 70/30 properties

Copper Nickel 70/30 Chemical Composition

Cu(1,2) Pb Zn Fe Ni(3) Mn
(1) Cu + Sum of Named Elements 99.5% min.(2) Cu value includes Ag.(3) Ni value includes Co.
Min (%) 0.40 29.0
Max (%) Rem 0.05 1.0 1.0 33.0 1.0

Copper Nickel 70/30 Mechanical Properties*

Temper Code
Tensile Strength
YS-0.5% Ext
Rockwell B scale
Rockwell F scale
Section Size
Cold Work
Flat Products As Hot Rolled M20 55   Typ
20   Typ
45   Typ
35   Typ
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
* Measured at room temperature, 68°F (20°C).

Cupro Nickel 70/30 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

CUNI 70/30 Fabrication Properties

Technique Suitability
Soldering Excellent
Brazing Excellent
Oxyacetylene Welding Good
Gas Shielded Arc Welding Excellent
Coated Metal Arc Welding Excellent
Spot Weld Excellent
Seam Weld Excellent
Butt Weld Excellent
Capacity for Being Cold Worked Good
Capacity for Being Hot Formed Good
Machinability Rating 20

Common Fabrication Processes of Cu-Ni 70/30

  • Forming and Bending
  • Welding

Copper Nickel 70/30 Thermal Properties

Treatment Minimum* Maximum*
* Temperature is measured in Fahrenheit.
Annealing 1200 1500
Hot Treatment 1700 1900

Cupro Nickel 70/30 Applicable Specifications

Form Specific Sub-Form Application System Standard
Bar ASTM B122/B122M
ASTM B151/B151M
SAE J461
SAE J463
Bolts ASTM F468
Condenser & Heat Exchanger Tube with Integral Fins Welded ASTM B956/B956M
Electrode Welding AWS A5.6
Welding MILITARY MIL-E-22200/4
Nuts ASTM F467
Pipe Seamless ASME SB466
Seamless ASTM B466/B466M
Welded ASTM B467
Plate Condenser Tube ASME SB171
ASTM B122/B122M
Condenser Tube ASTM B171/B171M
Clad ASTM B432
Condenser Tube SAE J461
SAE J461
SAE J463
Condenser Tube SAE J463
Rod ASTM B151/B151M
Screws ASTM F468
Sheet ASTM B122/B122M
SAE J461
SAE J463
Strip ASTM B122/B122M
SAE J461
SAE J463
Studs ASTM F468
Tube Welded
Condenser Tube ASME SB111
Finned ASME SB359
U-Bend ASME SB395
Seamless ASME SB466
Welded ASME SB543
Condenser Tube ASTM B111/B111M
Finned ASTM B359/B359M
U-Bend ASTM B395/B395M
Seamless ASTM B466/B466M
Welded ASTM B543/B543M
Condenser Tube ASTM B552
Condenser Tube MILITARY MIL-T-15005
Seamless MILITARY MIL-T-16420
Finned MILITARY MIL-T-22214
Condenser Tube SAE J461
Condenser Tube SAE J463

Are You looking to Buy ?

We stock an extensive selection of high performance specialist alloys and offer immediate delivery worldwide