Round Bar

Round Bar

Copper Nickel 90/10 is an alloy that contains small but important additions of iron and manganese to enhance overall strength and corrosion resistance. Copper-nickel alloys bars are generally known for their good corrosion resistance, excellent machinability, and outstanding thermal and electrical conductivity.

Chemical composition

GRADE

 

Cu

Ni

Fe

Mn

Pb

Zn

Cu-Ni 90/10

Min

REMAINDER

9

1

Max

11

1.8

1

0.05

1

Properties

90-10 copper nickel alloy bars are made to upsurge its resistance to general corrosion, impingement corrosion and erosion resulting from the stormy movement of water comprising silt flowing and air bubbles at a superior velocity.

Mechanical properties

Grade

Tensile Strength

Yield Strength

Elongation

[MPA]

[MPA]

(% in 50mm) min

Cu-Ni 90/10

380

240

20

The 90-10 copper-nickel alloy contains small but important additions of iron in levels as a result to provide the best combination of resistance to flowing seawater and localised corrosion. Copper-nickel alloys have good resistance to chloride pitting and crevice corrosion.

Physical properties

Grade

Density (g/cm3)

Melting Range °C

Elastic Modulus (GPa)

Coeff of Thermal Expansion (μm/m/°C)

Thermal Conductivity (W/m.K)

Specific Heat ( J/Kg.K)

Electrical Resistivity (μΩ.cm)

10-300°C

at 100°C

0-100°C

Cu-Ni 90/10

8.94

1100-1145

140

17

40

377

19

Cu Ni 90/10 bar offers designers and specifiers excellent resistance to stress corrosion, erosion, and biofouling in seawater and brackish water, excellent fabrication and welding properties, a high resistance to hydrogen embrittlement and the retention of mechanical properties down to cryogenic temperature.

Specification

The Specification for Cu Ni 90/10 bar as per astm Standard is ASTM B 151/ASME SB-151, they are categorised into different form and shape such as Cupro Nickel 90 / 10 Inconel 825 Round Bar, Rod, Channel Bar, T-Bar, Flat Bar, Blocks, Square, bar, Triangle, Threaded, Hex (A/F), Profiles, Half Ingot, Billet, I/H Bar, etc.

When considering wrought stainless round bars, material shall be furnished in the following way such as  Hot-worked, Hot-worked and Annealed, Hot-worked- Annealed and cold worked or Hot-worked-Annealed and heat treated.

Round bars depending upon their treatment and their use and application they can also be available in different surface finishes such as Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish, 2B, 2D, etc.

Application

90-10 copper nickel alloy bars or (UNS C70600) are used in power steering tubes, brake lines, condenser plates, pressure vessels and distiller tubes. Because of their unique useful properties, Copper Nickel 90 / 10 bars are specified for marine engineering applications, such as in shipbuilding and repair, desalination plants, offshore oil and gas structures and power generation.