Equivalent Specifications

BS NA21 3072
BS NA21 3076
ASTM B 443
ASTM B 446
ASTM B 564
ASME SB 443
ASME SB 446
AMS 5599
AMS 5666
ASME 1935
AFNOR NC 22DNb
W.Nr 2.4856 NiCr22Mo9Nb
DIN 17744
DIN 17752
UNS N06625

Key Features

A nickel-chromium alloy with additions of molybdenum and niobium which greatly enhance the properties of the face-centred cubic structure.

The alloy has outstanding resistance to all types of sea water corrosion including pitting, crevice and impingement. It also has resistance to corrosion by mineral acids such as nitric, phosphorus, hydrochloric and sulphuric. Also has resistance to alkalis and organic acids in both reducing and oxidising conditions.

Typical Uses

Industrial: Acid production equipment, flue gas scrubber components, mining equipment.

Marine: Offshore industry, pumps, shafts and fasteners.

Aerospace: Aircraft engine components.

Description Nickel Chromium
Nominal Composition NiCr22Mo9Nb
Alloy Type wrought

Typical Mechanical Properties

Tensile Strength (N/mm²) 900
Proof/Yield Strength (N/mm²) 500
Elongation (%) 50
Hardness Brinell 190
Impact Izod J20°C 130

Typical Physical Properties

Density g/cm³ 8.44
Melting Temperature Range °C 1290 - 1350
Thermal Conductivity W/mK 9.8
Electrical Resistivity μΩ.m15°C 129
Coefficient of Thermal Expansion 0-250°C 13.5
Relative Magnetic Permeability <1.001
Coefficient of Friction

Copper Alloys has the ability to modify existing alloys for improved performance. Many customers have benefited from this in the past.

To discuss your requirements, call a member of Copper Alloys’s technical team on +44 (0) 1782-816888, or email [email protected].

Contact

+44 (0) 1782 816888

[email protected]

Auckland Street, Stoke-on-Trent, ST6 2AZ, United Kingdom