A-286

Product Information

A-286 alloy is an age-hardenable iron base superalloy for applications requiring high strength from -320°F up to 1000°F long time, 1300-1500°F short time. Oxidation resistance is high for continuous service to 1500°F, intermittent to 1800°F. Aqueous corrosion resistance is comparable to 316/316L stainless. Heat treatment according to AMS 5525 requires a solution anneal at 1800°F, air cool. Age at 1325°F for 16 hours and then air cool.

Common Trade Names

A286 Stainless, A286 Alloy

Inventory

A-286 Sheet, A-286 Coil, A-286 Round Bar, A-286 Hex Bar

Specifications

UNS S66286, Werkstoff 1.4980, EN 1.4980
AMS: 5525, 5804, 5732, 5737
GE B50T1181, GE B50T12, GE B50T81

Chemical Composition, %

	Cr	Ni	Mo	Co	Va	Al	Ti	B	C	Fe	Mn	Si	Ph	S
MIN	13.5	24.0	1.0	-	0.1	-	1.9	0.003	-	-	-	-	-	-
MAX	16.0	27.0	1.5	1.0	0.5	0.35	2.35	0.01	0.08	Balance	2.0	1.0	0.025	0.025

Features

High strength to 1000°F
Oxidation resistant to 1500°F

Applications

Jet engine components
High temperature fasteners, springs
Non-magnetic cryogenic equipment

Physical Properties

Density: 0.303 lb/inch3
Melting Range: 2350-2460°F

Temperature, °F	200	800	1000	1200	1400
Coefficient of Thermal Expansion, in/in°F x 10-6	9.2	9.6	9.8	9.9	10.3
Thermal Conductivity Btu • ft/ft2 • hr • °F	8.0	9.8	13.0	14.1	-
Modulus of Elasticity, psi X 106	-	-	24	22	23

* 70°F to indicated temperature.

Mechanical Properties

Representative Tensile Properties, Sheet

Temperature, °F	70*	70	400	800	1000	1200	1400
Ultimate Tensile Strength, ksi	95*	145	143	138	131	103	64
0.2% Yield Strength, ksi	50*	95	93	93	87	88	62
Elongation, %	40*	24	21	18	18	13	18

* Annealed

Typical Stress-Rupture Strength 1800°F/1325°F Heat Treat

Temperature, °F	1000	1100	1200
100 Hours, ksi	99	81	61
1,000 Hours, ksi	88	71	46

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