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.

 		Tel +44 (0) 1782-816888  
Email sales@copperalloys.net
Print this page »

SAE AMS 5666 Nickel 625

An American aerospace standard for NiCr22Mo9Nb4, Nickel 625. The high tensile, creep, and rupture strength; outstanding fatigue and thermal-fatigue strength; oxidation resistance; and excellent weldability and brazeability are the properties of Nickel 625 that make it of interest within aerospace applications. The alloy can also be manufactured to alternative global specifications ASTM B 446 UNS 6625, ASME SB 446, ASTM B564, ASME SB 564, EN 10302, DIN 17754 WN 2.4825, DIN 17752 WN 2.4825, BS 3076 NA21, ASME Code Case 1935, ISO 9723, ISO 9725, VdTÜV 499 and UNS NO 6625.

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 Ltd 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 Ltd's technical team on +44 (0) 1782-816888, or email sales@copperalloys.net.

This Data is indicative only and must not be seen as a substitute for the full specification from which it is drawn. In particular, the mechanical property requirements vary widely with tempeter, product and product dimensions. The information is based on our present knowledge and is given in good faith. However, no liability will be acepted by the Company in respect of any action taken by any third party in reliance thereon.

As the products detailed may be used for a wide variety of purposes and as the Company has no control over their use; the Company specifically excludes all conditions or warranties expressed or implied by statute or otherwise as to dimensions, properties and/or fitness for any particular purpose.

Any advice given by the Company to any third party is given for that party's assistance only and without liability on the part of the Company. Any contract between the Company and a customer will be subject to the Company's Conditions of Sale. The extent of the Company's liabilities to any customer is clearly set out in those Conditions, a copy of which is available on request.