What is 1.4562 Stainless Steel?

1.4562 stainless steel, more commonly known as A-286 or UNS S66286, is an iron-based, austenitic precipitation-hardening superalloy. It is designed for high-temperature applications, offering excellent strength, creep resistance, and oxidation resistance up to about 700°C. This makes it a preferred material for aerospace, gas turbine, and high-stress fastener applications.

 

This high-temperature superalloy is standardized under key international systems.

Standard	Equivalent Grade
EN (Europe)	1.4562
ASTM/AISI (USA)	A-286, UNS S66286
Common Name	A-286

Its composition includes titanium and aluminum for age-hardening, along with nickel and chromium for stability at high temperatures.

Element	C	Si	Mn	Cr	Ni	Mo	Ti	Al
Content (%)	≤ 0.08	≤ 1.0	≤ 2.0	13.5 - 16.0	24.0 - 27.0	1.0 - 1.5	1.9 - 2.3	≤ 0.35

It offers high strength and good ductility, especially after aging.

Condition	Yield Strength (Rp0.2)	Tensile Strength (Rm)	Elongation (A)	Hardness (HRC)
Solution Treated	~ 690 MPa	~ 1035 MPa	~ 20%	~ 30 HRC
Aged	~ 965 MPa	~ 1240 MPa	~ 15%	~ 38 HRC

 

Key Characteristics and Applications of 1.4562 / A-286

Excellent High-Temperature Strength: Maintains high tensile and creep strength up to 700°C, outperforming many stainless steels at elevated temperatures.

Good Oxidation and Corrosion Resistance: Resists scaling and oxidation in air up to about 815°C and offers moderate corrosion resistance in various environments.

Precipitation Hardening: Can be solution treated and aged to achieve a combination of high strength and good ductility.

 

Primary Applications:

Aerospace: Turbine blades, afterburner components, fasteners, and jet engine parts.

Gas Turbines: Bolts, studs, and high-temperature structural components.

Automotive: Turbocharger components and high-performance exhaust systems.

Industrial: High-stress fasteners and components for high-temperature service.

 

What is the difference between A-286 (1.4562) and 17-4PH (1.4542)?
A-286 is an austenitic superalloy designed primarily for high-temperature strength and creep resistance, while 17-4PH is a martensitic precipitation-hardening stainless steel focused on high room-temperature strength and moderate corrosion resistance. A-286 retains its strength and oxidation resistance at temperatures up to 700°C, whereas 17-4PH is generally limited to lower temperatures (around 300°C). A-286 is also non-magnetic, while 17-4PH is magnetic.

 

What heat treatment is recommended for A-286 stainless steel?
The standard heat treatment involves solution treating at 980°C followed by rapid cooling (usually oil quenching). It is then aged at 720°C for 16 hours, followed by air cooling. This aging treatment precipitates the gamma prime phase (Ni3(Al,Ti)), which provides the high-temperature strength. Care must be taken to avoid over-aging or exposure to temperatures that could cause detrimental phase formation.

 

Looking for a Reliable Supplier of 1.4562 / A-286 Stainless Steel?
GNEE Steel supplies high-performance A-286 (1.4562) superalloy in bar, wire, and forging forms for demanding aerospace and high-temperature applications. We provide full material certification and processing support. If you have any requirements, please feel free to contact us.