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Special Metals INCONEL® Alloy 686 Nickel Superalloy Rod (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 rod. 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 PropertiesMetricEnglishComments
Density 8.73 g/cc0.315 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Tensile Strength 810 MPa
@Thickness 38.1 mm		117000 psi
@Thickness 1.50 in
Tensile Strength, Yield 359 MPa
@Strain 0.2 %,
Thickness 38.1 mm		52100 psi
@Strain 0.2 %,
Thickness 1.50 in		rod
Elongation at Break 56 %
@Thickness 38.1 mm		56 %
@Thickness 1.50 in		rod
Modulus of Elasticity  165 GPa
@Temperature 700 °C		23900 ksi
@Temperature 1290 °F
 173 GPa
@Temperature 600 °C		25100 ksi
@Temperature 1110 °F
 183 GPa
@Temperature 500 °C		26500 ksi
@Temperature 932 °F
 185 GPa
@Temperature 400 °C		26800 ksi
@Temperature 752 °F
 193 GPa
@Temperature 300 °C		28000 ksi
@Temperature 572 °F
 197 GPa
@Temperature 200 °C		28600 ksi
@Temperature 392 °F
 205 GPa
@Temperature 100 °C		29700 ksi
@Temperature 212 °F
 207 GPa
@Temperature 20.0 °C		30000 ksi
@Temperature 68.0 °F
Poissons Ratio 0.330.33
 0.340.34
 0.340.34
 0.350.35
 0.370.37
 0.370.37
 0.370.37
 0.380.38
Fatigue Strength  410 MPa
@# of Cycles 1.00e+7 		59500 psi
@# of Cycles 1.00e+7 		in air
 500 MPa
@# of Cycles 1.00e+6 		72500 psi
@# of Cycles 1.00e+6 		in air
 690 MPa
@# of Cycles 100000 		100000 psi
@# of Cycles 100000 		in air
Shear Modulus  61.0 GPa
@Temperature 700 °C		8850 ksi
@Temperature 1290 °F
 65.0 GPa
@Temperature 600 °C		9430 ksi
@Temperature 1110 °F
 67.0 GPa
@Temperature 500 °C		9720 ksi
@Temperature 932 °F
 69.0 GPa
@Temperature 400 °C		10000 ksi
@Temperature 752 °F
 70.0 GPa
@Temperature 300 °C		10200 ksi
@Temperature 572 °F
 72.0 GPa
@Temperature 200 °C		10400 ksi
@Temperature 392 °F
 75.0 GPa
@Temperature 100 °C		10900 ksi
@Temperature 212 °F
 77.0 GPa
@Temperature 20.0 °C		11200 ksi
@Temperature 68.0 °F
Impact Test  404 J
@Temperature -196 °C		298 ft-lb
@Temperature -321 °F		As Annealed
 405 J
@Temperature 20.0 °C		299 ft-lb
@Temperature 68.0 °F		As Annealed
 2.70 J
@Temperature -196 °C,
Treatment Temp. 980 °C		1.99 ft-lb
@Temperature -321 °F,
Treatment Temp. 1800 °F		After High Temp Exposure
 2.70 J
@Temperature 20.0 °C,
Treatment Temp. 980 °C		1.99 ft-lb
@Temperature 68.0 °F,
Treatment Temp. 1800 °F		After High Temp Exposure
 3.40 J
@Temperature -196 °C,
Treatment Temp. 870 °C		2.51 ft-lb
@Temperature -321 °F,
Treatment Temp. 1600 °F		After High Temp Exposure
 8.10 J
@Temperature 20.0 °C,
Treatment Temp. 870 °C		5.97 ft-lb
@Temperature 68.0 °F,
Treatment Temp. 1600 °F		After High Temp Exposure
 12.2 J
@Temperature -196 °C,
Treatment Temp. 760 °C		9.00 ft-lb
@Temperature -321 °F,
Treatment Temp. 1400 °F		After High Temp Exposure
 25.1 J
@Temperature 20.0 °C,
Treatment Temp. 760 °C		18.5 ft-lb
@Temperature 68.0 °F,
Treatment Temp. 1400 °F		After High Temp Exposure
 400 J
@Temperature 20.0 °C,
Treatment Temp. 540 °C		295 ft-lb
@Temperature 68.0 °F,
Treatment Temp. 1000 °F		After High Temp Exposure
 401 J
@Temperature 20.0 °C,
Treatment Temp. 650 °C		296 ft-lb
@Temperature 68.0 °F,
Treatment Temp. 1200 °F		After High Temp Exposure
 403 J
@Temperature -196 °C,
Treatment Temp. 650 °C		297 ft-lb
@Temperature -321 °F,
Treatment Temp. 1200 °F		After High Temp Exposure
 405 J
@Temperature -196 °C,
Treatment Temp. 540 °C		299 ft-lb
@Temperature -321 °F,
Treatment Temp. 1000 °F		After High Temp Exposure
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.0001238 ohm-cm0.0001238 ohm-cm
Magnetic Permeability 1.00011.0001200 Oe
 
Thermal PropertiesMetricEnglishComments
CTE, linear  11.97 µm/m-°C
@Temperature 21.0 - 100 °C		6.650 µin/in-°F
@Temperature 69.8 - 212 °F
 12.22 µm/m-°C
@Temperature 21.0 - 200 °C		6.789 µin/in-°F
@Temperature 69.8 - 392 °F
 12.56 µm/m-°C
@Temperature 21.0 - 300 °C		6.978 µin/in-°F
@Temperature 69.8 - 572 °F
 12.87 µm/m-°C
@Temperature 21.0 - 400 °C		7.150 µin/in-°F
@Temperature 69.8 - 752 °F
 13.01 µm/m-°C
@Temperature 21.0 - 500 °C		7.228 µin/in-°F
@Temperature 69.8 - 932 °F
 13.18 µm/m-°C
@Temperature 21.0 - 600 °C		7.322 µin/in-°F
@Temperature 69.8 - 1110 °F
Specific Heat Capacity  0.364 J/g-°C
@Temperature -15.0 °C		0.0870 BTU/lb-°F
@Temperature 5.00 °F
 0.373 J/g-°C
@Temperature 20.0 °C		0.0891 BTU/lb-°F
@Temperature 68.0 °F
 0.389 J/g-°C
@Temperature 100 °C		0.0930 BTU/lb-°F
@Temperature 212 °F
 0.410 J/g-°C
@Temperature 200 °C		0.0980 BTU/lb-°F
@Temperature 392 °F
 0.431 J/g-°C
@Temperature 300 °C		0.103 BTU/lb-°F
@Temperature 572 °F
 0.456 J/g-°C
@Temperature 400 °C		0.109 BTU/lb-°F
@Temperature 752 °F
 0.477 J/g-°C
@Temperature 500 °C		0.114 BTU/lb-°F
@Temperature 932 °F
 0.498 J/g-°C
@Temperature 600 °C		0.119 BTU/lb-°F
@Temperature 1110 °F
 0.519 J/g-°C
@Temperature 700 °C		0.124 BTU/lb-°F
@Temperature 1290 °F
Thermal Conductivity  9.80 W/m-K
@Temperature 25.0 °C		68.0 BTU-in/hr-ft²-°F
@Temperature 77.0 °F
 12.8 W/m-K
@Temperature 200 °C		88.8 BTU-in/hr-ft²-°F
@Temperature 392 °F
 16.6 W/m-K
@Temperature 400 °C		115 BTU-in/hr-ft²-°F
@Temperature 752 °F
 21.4 W/m-K
@Temperature 600 °C		149 BTU-in/hr-ft²-°F
@Temperature 1110 °F
 25.3 W/m-K
@Temperature 800 °C		176 BTU-in/hr-ft²-°F
@Temperature 1470 °F
 29.6 W/m-K
@Temperature 1000 °C		205 BTU-in/hr-ft²-°F
@Temperature 1830 °F
 32.6 W/m-K
@Temperature 1150 °C		226 BTU-in/hr-ft²-°F
@Temperature 2100 °F
Melting Point 1338 - 1380 °C2440 - 2520 °F
Solidus 1338 °C2440 °F
Liquidus 1380 °C2520 °F
 
Processing PropertiesMetricEnglishComments
Annealing Temperature 1180 - 1200 °C2160 - 2190 °F
Hot-Working Temperature 870 - 1230 °C1600 - 2250 °F
 
Component Elements PropertiesMetricEnglishComments
Carbon, C <= 0.010 %<= 0.010 %
Chromium, Cr 19 - 23 %19 - 23 %
Iron, Fe <= 2.0 %<= 2.0 %
Manganese, Mn <= 0.75 %<= 0.75 %
Molybdenum, Mo 15 - 17 %15 - 17 %
Nickel, Ni 52.5 - 63 %52.5 - 63 %as balance
Phosphorus, P <= 0.040 %<= 0.040 %
Silicon, Si <= 0.080 %<= 0.080 %
Sulfur, S <= 0.020 %<= 0.020 %
Titanium, Ti 0.020 - 0.25 %0.020 - 0.25 %
Tungsten, W 3.0 - 4.4 %3.0 - 4.4 %

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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