UNS Number S66286

Incoloy Alloy A-286 (sometimes referred to as A286 stainless steel) is a nickel and iron-based, austenitic superalloy that is useful for applications requiring high strength and corrosion resistance up to 1300˚F (704˚C), and for lower stress applications at higher temperatures.  The mechanical properties of this alloy are developed by suitable solution annealing and precipitation hardening treatments.
This alloy has excellent high temperature oxidation resistance and is designed to maximize creep and stress rupture properties, with some reduction in strength.  A-286 material can attain high strength levels when aged after cold work, and has wide applications in high temperature fasteners and springs.

Available Forms of Incoloy A-286 at Rooplaxmi Steels:

•           Bar
•           Sheet
•           Plate
•           Pipe & Tube (welded and seamless)
•           Pipe Fittings
•           Wire

Characteristics of Incoloy A-286:

•           Excellent fabrication characteristics
•           High mechanical properties due to age-hardenability
•           High ductility in notched sections
•           Good creep-rupture strength during extended high-temperature exposure
•           Can be produced by AOD reefing or vacuum induction melting
•           Good for moderate corrosion applications in aqueous solutions

Incoloy A-286 Chemical Composition, %:

C	Mn	P	S	Si	Cr	Ni	Mo
0.08 max	2.0 max	0.025 max	0.025 max	1.0 max	13.5-16.0	24.0-27.0	1.0-1.5

Ti	V	Al	B	Fe
1.90-2.35	0.1-0.5	0.35 max	0.003-0.010	Balance

 

Application of Incoloy A-286:

•           Jet engine components
•           Fasteners
•           Springs
•           Bolts
•           Flanges
•           Blades
•           Afterburners
•           Automotive applications
•           Offshore oil & gas
•           Moderate corrosion applications in aqueous solutions
•           Non-magnetic cryogenic equipment

Machining and Fabrication with Incoloy A-286:

Incoloy A-286 is rolled or forged from temperature of 1900/2050 °F(1038/1121 °C) using a short soaking period. It is slightly more resistance to deformation than the austentitic stainless steels during hot working. Do not forge below 1700 °F(927 °C). In the solution treated condition,alloy A-286 can be satisfactorily cold drawn and formed. It is somewhat stiffer than stainless steels such as Types 316 and 310,and it work hardens rapidly. In general, the high temperature alloys are more difficult to machine than stainless steels. However, the iron-base alloy group, of which alloy A-286 is a member, is easier to machine than the nickel-based precipitation-hardening grades such as alloy 718 or cobalt-bearing grades such as alloy 41. Carbide insert tools are commonly used where possible.

 

Incoloy A-286 ASTM Specification:

Pipe & Tube	Sheet / Plate	Bar	Forging
AMS 5731, AMS 5732, AMS 5734, AMS 5737, AMS 5895	AMS 5525, AMS 5858	A638, AMS 5731, AMS 5732, AMS 5734, AMS 5737,	AMS 5731, AMS 5732, AMS 5734, AMS 5737,

 

Mechanical Properties of Incoloy A-286:
Typical room temperature tensile properties of material solution treated

Ultimate Tensile Strength	90000 psi or 620 Mpa
Yield	(0.2 % offset) 40000 psi or 275 Mpa
Elongation	40 %