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Short Description:
Inconel 686 is solid solution strengthening and corrosion resistance nickel based alloy of NI-Cr-Mo, which has good corrosion resistance in severe corrosive environment.
Product Description
Inconel alloy 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.
Its matched composition welding products, designated as INCO-WELD filler metals and welding electrode 686 CPT also offer exceptional as-welded resistance to sulfuric or hydrochloric acids, to mixtures of the two, and to crevice or pitting corrosion in hot concentrated acid chloride solutions. These welding products are also used for dissimilar and overmatched welding applications.
Alloy 686 is used for resistance to aggressive media in chemical processing, pollution control, pulp and paper manufacture, and waste management applications.
Inconel 686 Characteristic
Inconel 686 is solid solution strengthening and corrosion resistance nickel based alloy of NI-Cr-Mo, which has good corrosion resistance in severe corrosive environment.
Inconel 686 Chemical Composition
| % | Ni | Cr | Mo | W | Ti | Fe | C | Mn | S | Si | P |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Min | Balance | 19 | 15 | 3 | 0.02 | – | – | – | – | – | – |
| Max | Balance | 23 | 17 | 4.4 | 0.25 | 1 | 0.01 | 0.75 | 0.02 | 0.08 | 0.04 |
Inconel 686 Physical Properties
| Density | Melting Point | Coefficient of Expansion | Modulus of Elasticity |
|---|---|---|---|
| 8.73 g/cm3 | 1338 – 1380 °C | 11.97 gm/m °C (20 – 100 °C) | 207.0 kN/mm2 |
| 0.315 lb/in3 | 2440 – 2516 °F | 6.650 x 10-6 in/in °F (70 – 212 °F) | 30000 ksi |
Inconel 686 Mechanical Properties
| Condition | Tensile Strength Rm N/mm² | Yield strength R P 0. 2N/mm² | Elongation A5% |
|---|---|---|---|
| Solution | 690 | 380 | 45 |
| Cold Drawing/Hot Rolled | 1115 | 1020 | 23.1 |
- Bars & Rods & Foring Ring /Flanges
- Sheet & Plate
- Strip & Coil
- Welding Wire &Spring wire
- Seamless Tube & Welded Pipe
»Round Bar & Square Bar & Hexagon Bar
● Diameter : φ8～φ300mm Length:10mm-6000mm
● Hot forging, Hot Rolling, Cold Drawing
● Bright Surface, Polished Surface, Black Surface
»Tube & Pipe:Seamless Tube& Welded Pipe
● Cold Drawing Seamless Pipe： φ1.0～φ220mm
● Hot Extrusion pipe: φ50～φ250mm
● Others : U Blend Tube and Elbow
»Hot Rolled Plate & Cold Rolled Sheet
● Cold Rolling Sheet Thickness: ≦2.0mm Width:≦1500m
● Hot rolling Plate Thickness: ≧4.0mm Width: ≦2500m
»Strip & Tape Ribbon
● Thickness: ≧ 0.01mm Width: 15mm-300mm
● Cold rolling BA Strip, Hard & Soft Condition
»Straight Length Wire & Spool Wire
● Welding Wire: φ 0.1mm～6.0mm Cut length Rod: φ1.0～φ8.0mm
● Package : 5-25kg/Spool or Box
Inconel 686 ApplicationsI
They mainly apply to heat exchanger, reaction container and delivery pipe in the area of chemical processing, processing, pollution control, papermaking, industry and garbage treatment etc.