UNS N04400 Data Sheet

A corrosion resistant nickel-copper alloy which is immune to chloride induced stress corrosion cracking.  Also has excellent resistance to steam, torrential sea water, neutral and alkaline solutions.

Common Applications of UNS N04400

Marine Technology,  Industrial Heat Exchangers

Chemical industry

Propellor and pump shafts for seawater service

Cladding for crude oil distallation columns

UNS N04400 Chemical Composition

C (Carbon)                  <= 0.16%

Cu(Copper)                  28.0-34.0%

Fe (Iron)                      1.0-2.5%

Mn (Manganese)            <=2.0%

Ni (Nickel)                   => 63%

Si (Silicon)                    <=0.5%

S (Sulphur)                   <= 0.020%

Al (Aluminium)              <= 0.50%

 UNS N04400 Physical Properties

Density            8800kg/m3

Melting Range 1300-1350°C

UNS N04400 Mechanical Properties

Hardness  Rockwell B     70

Tensile Strength @ Break            520 Mpa /75400psi        

Tensile Strength @ Yield            240Mpa / 34800 psi    0.2% offset

Yield

Elongation @ Break                       45%

Modulus of Elasticity                       180Gpa          26100 ksi

UNS N04400 Thermal Properties

CTE Linear                  13.9mm/m-ºC (@temp 20-93ºC)

                                    15.8mm/m-ºC (@temp 20-315ºC)

                                    16.4mm/m-ºC (@temp 20-538ºC)