Alloy 625

Alloy 625, also known as Inconel 625, is a nickel-chromium-molybdenum alloy with niobium added. This provides high strength without a strengthening heat treatment. Alloy 625 resists a wide range of severely corrosive environments and is especially resistant to pitting and crevice corrosion.

Alloy 625 is typically used in:

◆ Chemical processing
◆ Sour gas wells
◆ Aerospace and Marine engineering
◆ Pollution-control equipment
◆ Nuclear reactors
Material composition/Composition:
Ni Nickel ▏ 58.0% min
Co Cobalt ▏ 1.0% max
Fe lron ▏ 5.0% max
Cr Chromium ▏ 20.0% -23.0%
C Carbon ▏ 0.10% max
Si Silicon ▏ 0.50% max
S Sulfur ▏ 0.015% max
Mn Manganese ▏ 0.50% max
P Phosphorus ▏ 0.015% max
Ti Titanium ▏ 0.40% max
AI Aluminum ▏ 0.40% max
Mo Molybdenum ▏ 8.0%-10.0%
Nb Niobium (plus Tantalum) ▏3.15% -4.15%
ASTM codes:
Pipe:B444 seamless / B705 welded
Fittings:B366
Flanges / Forgings:B564
Tube:B444 seamless / B704 welded
Plate :B443
Bar/Billet:B446
ASME Fittings:WPNCMC
Equivalents:
Trademark: Inconel 625
UNS: N06625
Werkstoff nr. 2.4856

Products Available:
Seamless Tubes, Welded Pipes.