Inconel 686 (UNS N06686) UNS N06686, Alloy 686, NS3309, 2.4606 Rod, wire, bar, forg

Introduction

A-one Alloy supply EU & US origin  Inconel 686 materials as well as round bar made in China with competitive  prices.

INCONEL 686 is a single-phase,  austenitic Ni-Cr-Mo-W alloy offering outstanding corrosion-resistance in a  range of severe environments. Its high nickel (Ni) and molybdenum (Mo)  provide good resistance in reducing conditions, and high chromium (Cr) offers  resistance to oxidizing media. Molybdenum (Mo) and tungsten (W) aid resistance  to localized corrosion such as pitting. Iron (Fe) is closely controlled to  enhance properties. Low carbon (C) helps minimize grain boundary  precipitation to maintain corrosion-resistance in the heat-affected zones of  welded joints. Resistance to general, pitting and crevice corrosion increases  with the alloying (Cr+Mo+W) content, and INCONEL alloy 686 scores higher than  competitive materials.

Characters

Inconel 686 offers excellent  resistance to general corrosion, stress-corrosion cracking and to pitting and  crevice corrosion in a variety of aggressive media. Its high nickel and  molybdenum content provide good resistance in reducing conditions while the  high chromium content offers resistance to oxidizing media. Localized  corrosion resistance is further enhanced by the addition of tungsten. Carbon  content is restricted to help minimize grain boundary precipitation to  maintain the corrosion resistance in the heat-effected zone of welded areas. Inconel  686 also proves to be well suited in handling mixed acid solutions containing  high concentrations of halides and has shown good resistance to mixed acid  media with pH levels of 1 or less, and chloride levels of over 100,000 ppm.

Application

INCONEL 686 is used for resistance to aggressive  media in chemical processing, pollution control, pulp and paper manufacture,  and waste management applications.

Equal grades

UNS N06686, Alloy 686,  NS3309(China), 2.4606

Chemical  composition

Chromium....................................................................19.0-23.0

Molybdenum   ...............................................................15.0-17.0

Tungsten..........................................................................3.0-4.4

Titanium.......................................................................0.02-0.25

Iron................................................................................2.0  max.

Carbon  ........................................................................0.01  max.

Manganese   .................................................................0.75  max.

Sulfur   ..........................................................................0.02   max.

Silicon   .........................................................................0.08   max.

Phosphorus   ................................................................0.04  max.

Nickel............................................................................Balance*

Standards

ASTM B564,B574

ASTM A480,B575

ASTM B622

ASTM B626,B619

Forms available

Rod, wire, bar, forging, pipe, tube,  fastener

Delivery

Available on request