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Incoloy ® A-286 is age-hardenable, iron-nickel-chromium superalloy appropriate for applications that require high tensile strength, oxidation resistance and corrosion resistance. Incoloy A-286 has high strength and corrosion resistance for temperatures up to 1300 °F (704 °C) and oxidation resistance up to 1800 °F (982 °C). Additionally, A-286 alloy is a austenitic stainless steel making it ideal for fastener applications, manifold components in the oil & has industry and also superchargers, jet engines and turbine components including:
- Blades
- Wheels
- Casings
- Frames
- Fasteners
- Sockets
- Flange nuts
- Screws
- Afterburner parts
A286 is an iron-nickel-chromium alloy with additions of molybdenum and titanium. A 286 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. Due to it’s high strength and excellent fabrication characteristics A286 is used in various components of aircraft and industrial gas turbines. A286 is also widely used in the offshore oil and gas industry where the components are subject to high levels of heat and stress.
Alloy 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. If you require further information regarding A286 contact Sales.
A286 Solution Treated
A286 Solution Treated is covered by specification AMS 5731 (AMS 5732 Capable) and BS HR52
Solution Heat Treatment: 1800ºF ± 25 (982 ± 14ºC) 1 hour, water/oil quench (AMS)
Hardness: ≥ 217HB or 220 HB (BS), ≥201HB (AMS)
A286 Solution Treated and Aged (1800ºF)
A286 Solution Treated and Aged is covered by specifications AMS 5732, BS HR51, ASTM A638 660 Type 2, ASTM A453 660 Class B
Solution Heat Treatment:
980ºC ± 10 for > 1 hour, followed by air cool (BS)
1800ºF ± 25 (982 ± 14ºC) 1 hour, water/oil quench (AMS)
Precipitation Heat Treatment:
720ºC ± 10 > 16 hours, followed by air cool (BS)
1300-1400 ºF (704-760ºC) hold not less 16 hours, air cool (AMS)
Hardness:
248 – 341 HB or 260 – 360 HV (BS)
248-341 HB (AMS)
Typical Mechanical Properties
| Alloy | 0.2 Proof Stress (min) | Tensile Strength (min) | Elongation (min) |
| Alloy A286 Solution Treated and Aged (BS) | 590 N/mm² | 900 N/mm² | 13% |
| Alloy A286 Solution Treated and Aged (AMS) | 85 ksi (586 mpa) | 130 ksi (896 mpa) | 15% |
A286 Solution Treated and Aged (1650ºF)
A286 Solution Treated and Aged is covered by specifications AMS 5737, ASTM A638 660 Type 1, ASTM A453 660 Class A and EN-2303 (under 4″ Bar)
Solution Heat Treatment:
1650ºF ± 25 (899 ± 14ºC) 1 hour, water/oil quench (AMS)
Precipitation Heat Treatment
1300-1400 ºF (704-760ºC) hold not less 16 hours, air cool (AMS)
Hardness
277-363 HB (AMS)
Typical Mechanical Properties
| Alloy | 0.2 Proof Stress (min) | Tensile Strength (min) | Elongation (min) |
| Alloy A286 Solution Treated and Aged (AMS) | 95 ksi ( 655mpa) | 140 ksi (965 mpa) | 12% |
A286 Other
AMS 5853 – 15% cold reduced (160 ksi/ 1103 Mpa tensile strength)
AMS 5726 – 40-50% cold reduced (200 ksi/ 1379 Mpa tensile strength)
Availability
Alloy A 286 is available in Sheet, Strip, Plate, Round Bar, Flat Bar, Square Bar , Hexagon Bar, Forging stock.
Specifications
- AMS 5723
- AMS 5726 Bar Work Str 200ksi min
- AMS 5731 Bar 1800°F Sol Trtd
- AMS 5732 Bar 1800°F Sol Trtd /Aged
- AMS 5734 Bar 1650°F Sol Trtd
- AMS 5737 Bar 1650°F Sol Trtd /Aged
- AMS 5853 Bar Cold Red 160ksi min
- AMS 5858 Sheet / Strip (welding gr)
- AMS 5895 Bar
- ASTM A638 660 Type 1
- ASTM A638 660 Type 2
- ASTM A453 660 Class A
- ASTM A453 660 Class B
- BS HR51 Bar 1800°F Sol Trtd /Aged
- BS HR52 Bar 1800°F Sol Trtd
- BS HR650
- AECMA PrEN 2171
- AECMA PrEN 2119
- AECMA PrEN 2172
- AECMA PrEN 2173
- AECMA PrEN 2303
- AECMA PrEN 2304
- AECMA PrEN 2398
- AECMA PrEN 2399
- AECMA PrEN 3510
- AECMA PrEN 2175
- AECMA PrEN 2417
- ws 1.4980
- UNS S66286
Chemical Composition
| Weight% | C | Mn | P | S | Si | Cr | Ni | Mo | Ti | V | Al | B | Co | Cu |
| A286 | 0.08 max | 2 max | 0.025 max | 0.025 max | 1 max | 13.5-16 | 24-27 | 1-1.5 | 1.9-2.35 | 0.10-0.50 | 0.35 max | 0.0003-0.010 | 1 max | 0.50 max |