We’re exhibiting: Valve World Expo, Düsseldorf, Germany. 29th November – 1st December. Hall 1 Booth #C17. Learn more.

List of Alloys & profiles

List of Alloys & profiles

Alloy Wire International

Datasheet: Inconel® 686

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

Inconel® 686 - Alloy Wire International 1

Key Features

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.

Typical Applications

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


Designations

UNS N06686
W.Nr. 2.4606
Ni-Cr-Mo-W
NiCr21Mo16W

Specifications

ASTM B574
ASTM B575
ASTM B619
ISO 15156-3 (NACE MR0175)

Chemical Composition

The chemical composition of Inconel® 686 is indicated in the table below:

ElementMin %Max %
NiBalanceBalance
Cr19.023.00
Mo15.017.0
W3.04.4
Ti0.020.25
Fe1.0
C0.01
Mn0.75
S0.02
Si0.08
P0.04

Alloy Details

Inconel® 686 density, melting point, coefficient of expansion, modulus of rigidity, and elasticity is indicated in the table below:

DensityMelting PointCoefficient of ExpansionModulus of Elasticity
8.73 g/cm31338 – 1380 °C11.97 gm/m °C (20 – 100 °C)207.0 kN/mm2
0.315 lb/in32440 – 2516 °F6.650 x 10-6 in/in °F (70 – 212 °F)30000 ksi

Properties

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°CUp to 1832°F
Spring Temper
Approx. tensile strength1200 – 1600 N/mm²174 – 232 ksi
Approx. operating temperature depending on load** and environment Up to 1000°CUp 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