A-286

A-286

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.

Chemistry

 CrNiMoCoVaAlTiBCFeMnSiPS
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

Specifications

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

Inventory

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

Common Trade Names

A286 Stainless, A286 Alloy

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