New Alloy: Inconel® 617 is now available from Alloy Wire. Learn about Inconel® 617
Datasheet: Inconel® 686
This Nickel-Chromium-Molybdenum-Tungsten alloy has exceptional resistance to sulfuric or hydrochloric acids, and to crevice or pitting corrosion in hot acid solutions which out performs Hastelloy C grades in mixed acids.
Available in all profile options
This alloy ideal for marine service having excellent resistance to general, galvanic, and localized corrosion and hydrogen embrittlement in seawater. INCONEL® 686 also has a high operating of up to 1000°C which is ideal for applications such as bolts, nuts and studs in the fasteners industry.
Inconel® 686 is known to be suitable for the following applications:
Chemical Processing
Petrochemical processing
Marine Engineering
Acid Processing
Oil & Gas extraction
Pulp & Paper production
Pollution control
Waste treatment
Welding
UNS N06686
W.Nr. 2.4606
Ni-Cr-Mo-W
NiCr21Mo16W
ASTM B574
ASTM B575
ASTM B619
ISO 15156-3 (NACE MR0175)
The chemical composition of Inconel® 686 is indicated in the table below:
Element | Min % | Max % |
---|---|---|
Ni | Balance | Balance |
Cr | 19.0 | 23.00 |
Mo | 15.0 | 17.0 |
W | 3.0 | 4.4 |
Ti | 0.02 | 0.25 |
Fe | – | 1.0 |
C | – | 0.01 |
Mn | – | 0.75 |
S | – | 0.02 |
Si | – | 0.08 |
P | – | 0.04 |
Inconel® 686 density, melting point, coefficient of expansion, modulus of rigidity, and elasticity is indicated in the table below:
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 |
The typical mechanical properties of Inconel® 686:
Annealed | ||
---|---|---|
Approx. tensile strength | <1000 N/mm² | <145i ksi |
Approx. operating temperature depending on load** and environment | Up to 1000°C | Up to 1832°F |
Spring Temper | ||
---|---|---|
Approx. tensile strength | 1200 – 1600 N/mm² | 174 – 232 ksi |
Approx. operating temperature depending on load** and environment | Up to 1000°C | Up to 1832°F |
The above tensile strength ranges are typical. If you require different please ask.
*Trade name of Special Metals Group of Companies
** High temperature static applications