Chemical composition Element Weight percent Element Weight percent Ni Balance Cr 19–23 Mo 15–17 W 3.0–4.4 Ti 0.02–0.25 Fe 2.0 max C 0.010 max Mn 0.75 max S 0.020 max Si 0.080 max P 0.040 max — —

Mechanical properties Representative room-temperature mechanical properties, Special Metals Table 5. The table identifies product dimensions but does not give a separate heat-treatment cycle for each row. Product / size mm 0.2% yield MPa Tensile MPa Elongation % Plate, 12.7 thick 364 722 71 Plate, 6.35 thick 399 733 68 Sheet, 3.18 thick 421 803 59 Sheet, 1.57 thick 408 848 59 Rod, 38.1 diameter 359 810 56 The manufacturer normally anneals 686 at 1180–1200°C with rapid cooling. This general recommendation is not stated as the exact cycle behind each table row.

Application areas Chemical processing plant equipment Flue-gas pollution control systems Pulp and paper manufacturing equipment Waste-management equipment exposed to aggressive media

Chemical composition Element Weight percent Element Weight percent Ni Balance Cr 19–23 Mo 15–17 W 3.0–4.4 Ti 0.02–0.25 Fe 2.0 max C 0.010 max Mn 0.75 max S 0.020 max Si 0.080 max P 0.040 max — —

Mechanical properties Representative room-temperature mechanical properties, Special Metals Table 5. The table identifies product dimensions but does not give a separate heat-treatment cycle for each row. Product / size mm 0.2% yield MPa Tensile MPa Elongation % Plate, 12.7 thick 364 722 71 Plate, 6.35 thick 399 733 68 Sheet, 3.18 thick 421 803 59 Sheet, 1.57 thick 408 848 59 Rod, 38.1 diameter 359 810 56 The manufacturer normally anneals 686 at 1180–1200°C with rapid cooling. This general recommendation is not stated as the exact cycle behind each table row.

Application areas Chemical processing plant equipment Flue-gas pollution control systems Pulp and paper manufacturing equipment Waste-management equipment exposed to aggressive media

Alloy 686/UNS N06686

Grade: Inconel 686/UNS N06686/Alloy 686/Nickel Alloy 686/W.Nr. 2.4606/NiCr21Mo16W

Sheet/Plate: 0.3mm-150mm

Strip/Foil: 0.02mm-16mm

Pipe: 6mm*0.5mm-1200mm*100mm

Bar: Ф6mm – Ф600mm

Wire: Ф0.01mm – Ф6mm

Others: Forged Rings, Flanges, Elbows, Tees, Reducers etc.

Standard: ASTM/ASME/AMS

INCONEL 686 is a nickel chromium molybdenum tungsten alloy developed for aggressive chemical environments. Its highly alloyed matrix supports resistance to general attack and localized corrosion, including pitting and crevice damage. Low carbon helps maintain corrosion performance around welded joints. The alloy is used in pollution-control and chemical equipment, where the exact fluid composition, temperature and fabrication condition guide material selection.

Chemical composition

Element	Weight percent	Element	Weight percent
Ni	Balance	Cr	19–23
Mo	15–17	W	3.0–4.4
Ti	0.02–0.25	Fe	2.0 max
C	0.010 max	Mn	0.75 max
S	0.020 max	Si	0.080 max
P	0.040 max	—	—

Mechanical properties

Representative room-temperature mechanical properties, Special Metals Table 5. The table identifies product dimensions but does not give a separate heat-treatment cycle for each row.

Product / size mm	0.2% yield MPa	Tensile MPa	Elongation %
Plate, 12.7 thick	364	722	71
Plate, 6.35 thick	399	733	68
Sheet, 3.18 thick	421	803	59
Sheet, 1.57 thick	408	848	59
Rod, 38.1 diameter	359	810	56

The manufacturer normally anneals 686 at 1180–1200°C with rapid cooling. This general recommendation is not stated as the exact cycle behind each table row.

Application areas

Chemical processing plant equipment
Flue-gas pollution control systems
Pulp and paper manufacturing equipment
Waste-management equipment exposed to aggressive media

Introduction

Specification

Chemical composition

Element	Weight percent	Element	Weight percent
Ni	Balance	Cr	19–23
Mo	15–17	W	3.0–4.4
Ti	0.02–0.25	Fe	2.0 max
C	0.010 max	Mn	0.75 max
S	0.020 max	Si	0.080 max
P	0.040 max	—	—

Mechanical

Mechanical properties

Representative room-temperature mechanical properties, Special Metals Table 5. The table identifies product dimensions but does not give a separate heat-treatment cycle for each row.

Product / size mm	0.2% yield MPa	Tensile MPa	Elongation %
Plate, 12.7 thick	364	722	71
Plate, 6.35 thick	399	733	68
Sheet, 3.18 thick	421	803	59
Sheet, 1.57 thick	408	848	59
Rod, 38.1 diameter	359	810	56

The manufacturer normally anneals 686 at 1180–1200°C with rapid cooling. This general recommendation is not stated as the exact cycle behind each table row.

Application