Alloy 625

Alias

NiCr22Mo9Nb (Eu)
NC22DNb (Fr)
UNS N06625 (US)
Alloy 625
2.4856 (De)
Din17752 (De)
ASTM B637
ASTM B446
ASTM B546
ASTM F467
ASTM F468
SAE/AMS 5666
ASME SB637
ASME SB446
ASME SB546

Chemistry

Base Element Ni(Nickel)

Element Min Max
Al(Aluminium) 0.4%
C(Carbon) 0.1%
Co(Cobalt) 1%
Cr(Chromium) 20 23%
Fe(Iron) 5%
Mn(Manganese) 0.5%
Mo(Molybdenum) 8 10%
Nb (Niobium) + Ta (Tantalum) 3.15 4.15%
Ni(Nickel) 58%
P(Phosphorus) 0.015
S(sulphur) 0.015%
Si(Silicon) 0.5%
Ti(Titanium) 0.4%
Mechanical Property Min Max
Elongation expresses 60 30%
Reduction of area 60 40%

Heat Treatment

Annealed: 930 – 1040 degrees C (B446 -Grade 1)
Solution treated: 1090 – 1200 degrees C (B446-Grade 2)
Stress relieved: Up to 870 degrees C, depending on thickness of material.

Uses

Aerospace (Engine exhaust/ turbine seals)
Petrochemical
Offshore/Sub-sea
Marine and Submarines
Nuclear Reactor(Control rod and components, water reactors).

Properties

High Strength
Corrosion resistance
Weld-ability/fabrication
Stress caching resistance
Pitting resistance

Disclaimer:
Information is given for illustrative purposes only. Tachart accepts no responsibility for the accuracy of the data contained within or the use of the data by any other party.
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