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Special Metals INCONEL® Alloy 686 Nickel Superalloy Plate (UNS N06686)
Categories: Metal; Nonferrous Metal; Nickel Alloy; Superalloy
Material Notes: INCONEL® alloy 686 (UNS N06686/W.Nr. 2.4606) 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. INCONEL alloy 686 is protected by U.S. patent 5,019,184.

Tensile strength (ultimate and yield) and elongation values reported here are typical for plate. Other property values are typical of INCONEL® alloy 686.

Data provided by the manufacturer, Special Metals.
Key Words: W.Nr. 2.4606
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Physical PropertiesOriginal ValueComments
Density 8.73 g/cc
 
Mechanical PropertiesOriginal ValueComments
Tensile Strength 722 MPa
@Thickness 12.7 mm
 545 MPa
@Thickness 6.40 mm,
Temperature 538 °C
 570 MPa
@Thickness 6.40 mm,
Temperature 427 °C
 602 MPa
@Thickness 6.40 mm,
Temperature 316 °C
 635 MPa
@Thickness 6.40 mm,
Temperature 204 °C
 691 MPa
@Thickness 6.40 mm,
Temperature 93.0 °C
 740 MPa
@Thickness 6.40 mm,
Temperature 24.0 °C
Tensile Strength, Yield 364 MPa
@Thickness 12.7 mm		0.2% offset
 224 MPa
@Thickness 6.40 mm,
Temperature 427 °C		0.2% offset
 261 MPa
@Thickness 6.40 mm,
Temperature 538 °C		0.2% offset
 288 MPa
@Thickness 6.40 mm,
Temperature 316 °C		0.2% offset
 290 MPa
@Thickness 6.40 mm,
Temperature 204 °C		0.2% offset
 323 MPa
@Thickness 6.40 mm,
Temperature 93.0 °C		0.2% offset
 396 MPa
@Thickness 6.40 mm,
Temperature 24.0 °C		0.2% offset
Elongation at Break 71 %
@Thickness 12.7 mm
 60 %
@Thickness 6.40 mm,
Temperature 24.0 °C
 60 %
@Thickness 6.40 mm,
Temperature 316 °C
 61 %
@Thickness 6.40 mm,
Temperature 538 °C
 67 %
@Thickness 6.40 mm,
Temperature 204 °C
 69 %
@Thickness 6.40 mm,
Temperature 427 °C
 69 %
@Thickness 6.40 mm,
Temperature 93.0 °C
Modulus of Elasticity 165 GPa
@Temperature 700 °C
 173 GPa
@Temperature 600 °C
 183 GPa
@Temperature 500 °C
 185 GPa
@Temperature 400 °C
 193 GPa
@Temperature 300 °C
 197 GPa
@Temperature 200 °C
 205 GPa
@Temperature 100 °C
 207 GPa
@Temperature 20.0 °C
Poissons Ratio 0.33
@Temperature 600 °C
 0.34
@Temperature 400 °C
 0.34
@Temperature 20.0 °C
 0.35
@Temperature 700 °C
 0.37
@Temperature 500 °C
 0.37
@Temperature 100 °C
 0.37
@Temperature 200 °C
 0.38
@Temperature 300 °C
Fatigue Strength 410 MPa
@# of Cycles 1.00e+7 		in air
 500 MPa
@# of Cycles 1.00e+6 		in air
 690 MPa
@# of Cycles 100000 		in air
Shear Modulus 61.0 GPa
@Temperature 700 °C
 65.0 GPa
@Temperature 600 °C
 67.0 GPa
@Temperature 500 °C
 69.0 GPa
@Temperature 400 °C
 70.0 GPa
@Temperature 300 °C
 72.0 GPa
@Temperature 200 °C
 75.0 GPa
@Temperature 100 °C
 77.0 GPa
@Temperature 20.0 °C
Impact Test 404 J
@Temperature -196 °C		As Annealed
 405 J
@Temperature 20.0 °C		As Annealed
 2.70 J
@Temperature -196 °C,
Treatment Temp. 980 °C		After High Temp Exposure
 2.70 J
@Temperature 20.0 °C,
Treatment Temp. 980 °C		After High Temp Exposure
 3.40 J
@Temperature -196 °C,
Treatment Temp. 870 °C		After High Temp Exposure
 8.10 J
@Temperature 20.0 °C,
Treatment Temp. 870 °C		After High Temp Exposure
 12.2 J
@Temperature -196 °C,
Treatment Temp. 760 °C		After High Temp Exposure
 25.1 J
@Temperature 20.0 °C,
Treatment Temp. 760 °C		After High Temp Exposure
 400 J
@Temperature 20.0 °C,
Treatment Temp. 540 °C		After High Temp Exposure
 401 J
@Temperature 20.0 °C,
Treatment Temp. 650 °C		After High Temp Exposure
 403 J
@Temperature -196 °C,
Treatment Temp. 650 °C		After High Temp Exposure
 405 J
@Temperature -196 °C,
Treatment Temp. 540 °C		After High Temp Exposure
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 744.4 ohm-cir-mil/ft
Magnetic Permeability 1.0001200 Oe
 
Thermal PropertiesOriginal ValueComments
CTE, linear 11.97 µm/m-°C
@Temperature 21.0 - 100 °C
 12.22 µm/m-°C
@Temperature 21.0 - 200 °C
 12.56 µm/m-°C
@Temperature 21.0 - 300 °C
 12.87 µm/m-°C
@Temperature 21.0 - 400 °C
 13.01 µm/m-°C
@Temperature 21.0 - 500 °C
 13.18 µm/m-°C
@Temperature 21.0 - 600 °C
Specific Heat Capacity 0.364 J/g-°C
@Temperature -15.0 °C
 0.373 J/g-°C
@Temperature 20.0 °C
 0.389 J/g-°C
@Temperature 100 °C
 0.410 J/g-°C
@Temperature 200 °C
 0.431 J/g-°C
@Temperature 300 °C
 0.456 J/g-°C
@Temperature 400 °C
 0.477 J/g-°C
@Temperature 500 °C
 0.498 J/g-°C
@Temperature 600 °C
 0.519 J/g-°C
@Temperature 700 °C
Thermal Conductivity 9.80 W/m-K
@Temperature 25.0 °C
 12.8 W/m-K
@Temperature 200 °C
 16.6 W/m-K
@Temperature 400 °C
 21.4 W/m-K
@Temperature 600 °C
 25.3 W/m-K
@Temperature 800 °C
 29.6 W/m-K
@Temperature 1000 °C
 32.6 W/m-K
@Temperature 1150 °C
Melting Point 1338 - 1380 °C
Solidus 1338 °C
Liquidus 1380 °C
 
Processing PropertiesOriginal ValueComments
Annealing Temperature 1180 - 1200 °C
Hot-Working Temperature 870 - 1230 °C
 
Component Elements PropertiesOriginal ValueComments
Carbon, C <= 0.010 %
Chromium, Cr 19 - 23 %
Iron, Fe <= 2.0 %
Manganese, Mn <= 0.75 %
Molybdenum, Mo 15 - 17 %
Nickel, Ni 52.5 - 63 %as balance
Phosphorus, P <= 0.040 %
Silicon, Si <= 0.080 %
Sulfur, S <= 0.020 %
Titanium, Ti 0.020 - 0.25 %
Tungsten, W 3.0 - 4.4 %

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Overview of materials for High Carbon Steel

NINCO29 / 17462




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