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Alloy A286 (AMS 5731/ AMS 5732 / AMS 5737 / AMS 5525)

Alloy A-286 is a precipitation hardening alloy with high strength and good corrosion resistance at temperatures up to 704 °C. It is used extensively in the petro-chemical, aerospace and oil field industries,especially for fasteners,stud-bolts

Product description：

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 stres

Chemical Composition：

Weight%

A286

0.08 max

2 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

specification：

Grade	UNS	W.Nr
Incoloy A-286	S66286	1.498

Mechanical property：

抗拉强度 Tensile Strength	屈服强度 Yied Strength	延伸率 Elongation
610	270	30

Executive standard：

棒材 Bar	锻件 Foring
ASTM B638	ASTM B638

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%