Inconel 686(UNS N06686 W.Nr.2.4606)

1.Inconel 686 INTRODUCTION

An alloy designed for outstanding corrosionresistance in a wide range of severe environments.  The alloy is used in the most severe environments  encountered in chemical processing, pollution  control, pulp and paper production, and treatment  of industrial and municipal wastes. Chemical  processing uses include heat exchangers, reaction  vessels, evaporators and transfer piping. Air  pollution control applications are stack liners,  ducts, dampers, scrubbers, stack-gas reheaters,  fans and housings.

2.Inconel 686 STANDARD  PRODUCT FORMS

Pipe, tube, sheet, strip, plate, round bar, forging stock,  hexagon and wire.

3.Inconel 686 MAJOR  SPECIFICATIONS

UNS N06686 

ASTM B 163, B 462, B 564,   B 574, B 575, B 619, B 622,   B 626, B 751, B 775, B 829,  B 906, F 467, F 467M, F 468,   F 468M 

DIN 17744, 17750 – 17754 

Werkstoff Nr. 2.4606 

ASME Code Case 2198 

ASME SB-163, SB-564,   SB-574, SB-575, SB-619,   SB-622, SB-626, SB-751,   SB-775, SB-829, SB-906 

VdTüV 515 

NACE MR-0175/ISO 15156 

SAE/AMS J2295, J2271, J2655,  J2280, J2485

4.Inconel 686 LIMITING CHEMICAL  COMPOSITION, %

Cr......19.0 – 23.0 

Mo.... 15.0 – 17.0 

W...........3.0 – 4.4 

Ti ......0.02 – 0.25 

Fe.......... 1.0 max. 

C..........0.01 max. 

Mn.......0.75 max.  

S..........0.02 max. 

Si.........0.08 max. 

P...........0.04 max. 

Ni............ Balance

5.Inconel 686 PHYSICAL CONSTANTS  AND THERMAL  PROPERTIES

Density, Ib/in3 ........................................................................0.315 

g/cm3 ......................................................................... 8.73 

Melting Range, °F ...................................................2440 – 2516 

°C ...................................................1338 – 1380  

Specific Heat, Btu/lb•°F.....................................................0.089 

J/kg•°C........................................................... 373 

Permeability at 200 Oersted (15.9 kA/m)....................1.001 

Coefficient of Expansion, 70 – 200°F, 10-6 in/in •°F..... 6.67 

20 – 100°C, μm/m •°C .......11.97 

Electrical Resistivity, ohm • circ mil/ft............................744.4 

μΩ•m..............................................1.237

6.Inconel 686 TYPICAL MECHANICAL  PROPERTIES 

(Annealed)

Tensile Strength, ksi............................................................... 110 

MPa............................................................ 758 

Yield Strength (0.2% Offset), ksi...........................................55 

MPa..................................... 379 

Elongation, % ..............................................................................60 

Hardness (HRB) ............................................................... 85 - 95