.png){kind=small}
|
Grade |
Code |
UNS |
Nickel Alloys |
|
A286 |
Alloy A-286 (1.4980) |
S66286 |
A286 is a precipitation-hardenable, iron-nickel-chromium based superalloy designed for heat and corrosion resistance while achieving high strength levels. With titanium, molybdenum and vanadium additions, it provides high-temperature strength, creep-rupture resistance and good oxidation resistance after aging. Thanks to its ability to be used in applications requiring high strength up to approximately 704°C, it is widely preferred for aircraft engine fasteners, gas turbine parts, afterburner components and high-temperature structural equipment.
|
C % |
Si % |
Mn % |
S % |
Cr % |
Mo % |
Ni % |
Ti % |
V % |
Fe % |
|
0.08 max. |
1.00 max. |
2.00 max. |
0.015 max. |
13.50 – 16.00 |
1.00 – 1.50 |
24.00 – 27.00 |
1.90 – 2.35 |
0.10 – 0.50 |
Balance |
|
Product Form |
Condition |
Rp0.2, MPa |
Rm, MPa |
Elongation [%] |
Hardness |
Density [g/cm3] |
|
Bar |
Solution treated / solution annealed, typical |
~275 |
~620 |
~40 |
140–180 HB |
7.94–7.98 |
|
Plate |
Solution annealed, ATI plate specification value |
— |
max. 724 |
min. 25 |
max. 90 HRB |
7.98 |
|
Sector |
Products |
|
Aerospace and Jet Engines |
Aircraft engine fasteners, afterburner parts, turbine/compressor components |
|
Industrial Gas Turbines / Energy |
Turbine fasteners, shafts, turbine disk/rotor-related components |
|
Automotive / High-Performance Engine Systems |
Exhaust manifold fasteners, turbo/supercharger parts, high-temperature bolts and nuts |
|
Offshore / Oil & Gas |
Flange fasteners, stud/bolt-nut assemblies, springs and special connecting parts |
|
Cryogenic / Non-Magnetic Equipment |
Non-magnetic fasteners, cryogenic shaft/part assemblies, special springs |
A286 is a precipitation-hardenable superalloy whose performance is largely determined by the correct heat-treatment condition. The aging treatment applied after solution annealing increases A286’s yield and tensile strength while improving creep-rupture resistance and dimensional stability at elevated temperatures. Although its formability is better in the solution-treated condition, it tends to work-harden during machining; therefore, proper tool selection, rigid fixturing and controlled cutting parameters are required.
A286, Alloy A286, 1.4980, S66286,
|
Product Form |
AMS |
ASTM |
Short Description |
|
Round Bar / Bar |
AMS 5731 |
ASTM A638 Grade 660 Type 2 |
1800°F / 982°C solution-treated condition; used for bar, forging, tube/tubing and ring forms. |
|
Round Bar / Bar |
AMS 5732 |
ASTM A638 Grade 660 Type 2 |
1800°F / 982°C solution-treated + aged condition; preferred for applications requiring high creep-rupture resistance. |
|
Round Bar / Bar |
AMS 5734 |
ASTM A638 Grade 660 Type 1 |
1650°F / 899°C solution-treated condition; used when better ductility and room-temperature strength are targeted. |
|
Round Bar / Bar |
AMS 5737 |
ASTM A638 Grade 660 Type 1 |
1650°F / 899°C solution-treated + aged condition; used to obtain a combination of high room-temperature strength and good ductility. |
|
Round Bar / Bar for Fastener Applications |
May be ordered depending on AMS 5732 / AMS 5737 |
ASTM A453 Grade 660 Class A / Class B |
ASTM standard used for bolts, studs, nuts and high-temperature fasteners; it is a bolting standard, not a general-purpose bar standard. |
|
Plate / Plate |
AMS 5525 |
— |
One of the most common AMS specifications for A286 sheet, strip and plate. Generally used for the solution heat-treated condition. |
|
Plate / Plate |
AMS 5858 |
— |
A286 specification for sheet, strip and plate, particularly requiring weldability / welding-grade controlled analysis. |
Carpenter Technology — CarTech® A-286 Alloy
Special Metals — INCOLOY® alloy A-286
