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
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
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
|