Fittings and Flanges

Fittings and Flanges

Copper Nickel 90/10 is a 90% copper, 10% nickel alloy that also contains small but important additions of iron and manganese to enhance overall strength and corrosion resistance. Copper-nickel alloys 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

Cu-Ni 90/10 Fittings and Cu-Ni 90/10 Flanges have outstanding welding and fabrication properties, However, the mechanical properties of these flanges maintain the cryogenic temperatures and these flanges are suitable in marine applications where it shows good toughness and ductility.

Mechanical Properties

Grade

Tensile Strength

Yield Strength

Elongation

[MPA]

[MPA]

Cu-Ni 90/10

345

135

30

Cu-Ni 90/10 alloy Flanges and Fittings is offering very good resistance to general corrosion in addition to the marine water attacks. This alloy is also corrosion-resistant by the fast-moving water. Alloy 90-10 is preventing resistant ability to crevice corrosion, pitting and stress corrosion cracking.

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

A copper and nickel-based alloy Flanges and Fittings consists of the nickel and copper as the primary alloys. It has other elements like zinc of less than 1%, copper in high concentration is found. Addition to those it comprises iron, tin, manganese to enhance certain properties.

Specification of Flange 

 According to  application and uses in pipes and tubes Cu-Ni 90/10 Flanges are broadly grouped into different sort, for example, SS 316 Welding Neck Flange(WNF) & Long Welding Neck Flange(LWNF), Slip-on Flange(SOF), Lap Joint Flange(LJW), Blind Flange, Socket Welding Flange (SWF), Threaded Flange(THW), Plate Flange.

Cu-Ni 90/10 Flanges for the most part has different  face type, for example, Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ), blind flange, with various class rating as 50 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16,din 2.4856 , 25, 40 & ANSI B16.5.

Specification of Fittings

Cu-Ni 90/10 Fittings or are categorically available are Elbow, Reducer, Tee, Coupling, Bend, Stub End, Cap, Nipple, Washer, Cross, Union etc which are available in different  types such as Welded, Seamless and Fabricated having thickness range from 5s, 10s, 40s, 80s, 10, 20, 40, STD, 60, 80, XS, 100, 120, 140, 160, XXS available with NACE MR 01-75.

Application

Copper-Nickel 90/10 have amazing resistance to corrosion, particularly in maine seawater application. The addition of a small amount of iron and manganese upgrade its  erosion  resistance quality. 

Cu-Ni 90/10 flanges and is widely used in marine service, offshore platform sea water piping, tidewater power plants, desalination plants, oil refineries, and in the chemical process industry.