Introduction

Inconel 625 is a corrosion and  oxidation resistant nickel alloy that is used both for its high strength and  outstanding aqueous corrosion resistance. Its outstanding strength and  toughness is due to the addition of niobium which acts with the molybdenum to  stiffen the alloy’s matrix. Alloy 625 has excellent fatigue strength and  stress-corrosion cracking resistance to chloride ions. This nickel alloy has  excellent weldability and is frequently used to weld AL-6XN. This alloy  resists a wide range of severely corrosive environments and is especially  resistant to pitting and crevice corrosion. Some typical applications Inconel  625 is used in are chemical processing, aerospace and marine engineering,  pollution-control equipment, and nuclear reactors.

Character

l    High creep-rupture strength

l    Oxidation resistant to 1800° F

l    Seawater pitting and crevice corrosion resistant

l    Immune to chloride ion stress corrosion cracking

l    Non-magnetic

Application

l    Aircraft ducting systems

l    Aerospace

l    Jet engine exhaust systems

l    Engine thrust-reverser systems

l    Specialized seawater equipment

l    Chemical process equipment

Equal grade

UNS N06625, Alloy 625, NS336, NS3306,  2.4856, NiCr22Mo9Nb

Chemical composition  (%)

Nickel…………………………………………….…………58.0 min.

Chromium………………………………………..…………20.0-23.0

Iron………………………………………………..………….5.0 max.

Molybdenum……………………………….……...…………8.0-10.0

Niobium (plus  Tantalum)………………………..………….3.15-4.15

Carbon……………………………………………..……….0.10 max.

Manganese………………………………………....……….0.50  max.

Silicon……………………………….…………...…………0.50  max.

Phosphorus……………………………………….………..0.015  max.

Sulfur…………………………………..……….…..……..0.015  max.

Aluminum…………………………………………………..0.40 max.

Titanium……………………………….……………………0.40 max.

Cobalt……………………………………………………….1.0 max.

Standards

Rod, Bar, Wire  and Forging Stock - ASTM B 446/ASME SB 446 (Rod & Bar), ASTM B  564/ASME SB 564 (Forgings), SAE/AMS 5666 (Bar, Forgings, & Rings),  SAE/AMS 5837 (Wire)

Plate, Sheet and  Strip - ASTM B  443/ASTM SB 443 (Plate, Sheet & Strip), SAE/AMS 5599 & 5869 & MAM  5599 (Plate, Sheet & Strip)

Pipe & Tube - ASTM B 444/B 829 & ASME SB  444/SB 829 (Seamless Pipe & Tube), ASTM B704/B 751 & ASME SB 704/SB  751 (Welded Tube), ASTM B705/B 775 & ASME SB 705/SB 775 (Welded Pipe)

Other Product  Forms - ASTM B  366/ASME SB 366 (Fittings)

Forms available  at A-one Alloy

Plate, sheet, strip, wire, rod, bar,  forging, pipe, tube, fitting, powder

Delivery

Huge stock of plate/sheet of  EU/US/Japan origin. Plenty of bars in stock. Strip could be delivered with 2  weeks. Delivery of other products please contact A-one Alloy for  confirmation.