A 286 Alloys
Specs: AMS 5732, AMS 5737, ASTM-A-453 GRADE 660 CLASS A, ASTM-A-638 GRADE 660 TYPE 1, ASTM-A-453 GRADE 660 CLASS B, ASTM-A-638 GRADE 660 TYPE 2
Alloy A286 features high strength, oxidation resistance, and corrosion resistance at continuously high temperatures. A286 alloys are heat treatable to achieve a wide variety of grain structures and tensile properties. This grade of A286 is annealed and aged. Applications for Alloy A286 include jet engine components, superchargers, turbine wheels and blades, fasteners, springs, and general high-stress components in petrochemical, aerospace, and oil patch industries.
A286 is an iron-nickel-chromium alloy with additions of molybdenum and titanium. A286 is one of the most popular high-temperature alloys. As one of the austenitic alloys, it maintains good strength and oxidation resistance at temperatures up to 1300ºF (700ºC).
It also contains niobium for stabilization against sensitization and resultant intergranular corrosion. A286 has excellent resistance to general corrosion, pitting, and crevice corrosion in chemicals containing chlorides and sulphuric, phosphoric, and nitric acids. Used for tanks, piping, heat exchangers, pumps, valves, and other process equipment.
Due to its high strength and excellent fabrication characteristics, A286 is used in various components of aircraft and industrial gas turbines. The alloy is also widely used in the offshore oil and gas industry where the components are subject to high levels of heat and stress.
Cold forming can also be conducted in the solution heat-treated condition to aid the properties after age hardening.
A286 bar can be solution treated at the temperatures detailed below, rapid cooled and then age hardened at 1325ºF (720ºC) for 16 hours and air cooling. The 1800ºF (980ºC) solution treatment produces the highest creep-rupture strength in age-hardened material whereas the 1650ºF (900ºC) treatment results in improved ductility and room temperature strength.
5737 is Solution Heat treated (annealed) at 1650 deg F +/- 25 degrees, then precipitation Heat treated (aged) between 1300-1400 degrees F for at least 16 hours, then air-cooled, achieve a min tensile of 140 KSI, min yield of 95 KSI, Min elongation of 12% and a min Reduction of area of 15%.
5732 is Solution Heat treated (annealed) at 1800 deg F +/- 25 degrees, then precipitation Heat treated (aged) between 1300-1400 degrees F for at least 16 hours, then air-cooled to achieve a min tensile of 130 KSI, min yield of 85 KSI, Min elongation of 15% and a min Reduction of area of 20%.
Available shapes – round
- Jet Engine Components
- Super Chargers
- Turbine Wheels
- Gas turbine, disks, blades, and shafts
- After burner parts
- High temperature fasteners and springs
- Non-magnetic cryogenic equipment down to -423º F
- Manifold Components in the oil and gas industry
- Heat exchange, tanks, pumps, piping, valves
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Specifications of A286
|Tube & Pipe
|Rod & Bar||Wire||Forgings|
|ASTM A 453 Grade 660 Class A and B
ASTM 1 638 Grade 660 Type 1 and 2
|AECMA Pr EN 2175
AECMA Pr EN 2417
|AECMA Pr EN 2171
AECMA Pr EN 2119
AECMA Pr EN 2173
|AECMA Pr EN 2172
AECMA Pr EN 2399
|BS HR 51
BS HR 52
BS HR 560
Mechanical Properties of A286
Tests on 7/8″(22.2mm) diameter bar stock solution treated to 1800°F (982°C), 1 hour, oil quenched and aged at 1325°F (719°C), for 16 hours and then air-cooled.
|Ultimate Tensile Strength
|0.2% Yield Strength
|Elong in 2″
|Reduction of Area
|70 21||145 1000||95 655||24||43||64 86.8|
|400 204||143 986||93.5 645||21||53||59 80|
|800 427||138 951||93 641||18||35||51 69|
|1000 538||131 903||87 603||18||31||45 33|
|1200 649||103.5 714||88 607||13||14||35 47.5|
|1400 760||64 441||62 427||18||23||52 70.5|
Physical Properties of Aluminum Bronze A286
|Physical Properties||Imperial Units||Metric Units|
|Density||0.287 lb/in³||7.94 g/cm³|
|Hot Working Range||1900-2050ºF||1038-1121ºc|
Max Service Temp (Air)
|Mean Liner Expansion 0-200ºc||16.5μm/m.ºc|
|Mean Liner Expansion 0-400 ºF||0.00916 in/in/ ºF x10³|
|Specific Heat||0.101Btu/lb/ ºF @68ºF||420J/kg ºc|
|Curie Temperature||70-120 ºF||21-49 ºc|
|Solution Heat Treated||1.01||1.010|
|Thermal Conductivity||88Btu-in/hr/ft²/ ºF||12.7W/m. ºc|
|Modulus of Elasticity 10³|
While the data is believed to be accurate, Wieland Diversified makes no representation or warranty of any kind (expressed or implied) and assumes no responsibility with respect to the accuracy and values shown above; this information should only be used as a guide.
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