Description

C286 high-strength austenitic non-magnetic stainless steel offers ultra-low permeability (μᵣ ≤ 1.003), high tensile strength (≥750 MPa), and crack-free forging. Ideal for motor shaft sleeves and non-magnetic structural components.

A286 Stainless Steel (UNS S66286)

High-Strength, Non-Magnetic Precipitation-Hardening Alloy for Aerospace, Motor, Cryogenic and Industrial Applications

Hefei Ke Ningman New Energy Materials Technology Co., Ltd. supplies A286 stainless steel, also known as A-286, Alloy A286, UNS S66286 and 1.4980, for engineering applications requiring a combination of high strength, corrosion resistance, oxidation resistance and non-magnetic performance.

A286 is an iron-based, nickel-chromium precipitation-hardening alloy that can be strengthened through controlled heat treatment. It is widely considered for demanding applications where mechanical strength, dimensional stability and corrosion resistance must be maintained across a wide temperature range.

Typical applications include aerospace components, high-temperature fasteners, springs, motor components, shaft sleeves, turbine equipment and non-magnetic cryogenic components.

Custom dimensions, product forms, technical documentation and bulk supply can be discussed according to project requirements.

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What Is A286 Stainless Steel?

A286 stainless steel is an age-hardenable, austenitic iron-based alloy with high nickel and chromium content.

It is commonly identified by:

• A286

• A-286

• UNS S66286

• W.Nr. 1.4980

• Alloy 660

• Iron Alloy 660

A286 is selected when engineers require a combination of:

• High mechanical strength

• Corrosion resistance

• Oxidation resistance

• Non-magnetic performance

• Good low-temperature ductility

• High-temperature strength

• Precipitation-hardening capability

The final properties depend on the product form, heat-treatment condition, processing history and applicable specification.

A286 Stainless Steel Key Properties

High Strength

A286 can achieve high mechanical strength through solution treatment and age-hardening processes.

This makes it suitable for components subjected to significant mechanical loads where conventional austenitic stainless steel may not provide sufficient strength.

Potential applications include:

• Shafts

• Shaft sleeves

• Fasteners

• Springs

• Turbine components

• Aerospace components

• Precision mechanical parts

The required tensile strength, yield strength and hardness should be specified together with the required heat-treatment condition.

Non-Magnetic Performance

A286 is an austenitic alloy and is widely used for applications requiring non-magnetic or low-magnetic-response material.

This characteristic can be important in:

• Cryogenic equipment

• Precision instruments

• Motor components

• Magnetic-sensitive assemblies

• Aerospace systems

• Specialized industrial equipment

Actual magnetic permeability can depend on material condition, cold work, processing and testing conditions.

For applications with a strict permeability limit, the buyer should specify the required maximum permeability and test method.

Corrosion Resistance

A286 provides useful corrosion resistance for many industrial environments.

Its corrosion performance makes it suitable for applications where both mechanical strength and environmental resistance are required.

However, corrosion resistance depends on:

• Temperature

• Chemical environment

• Surface condition

• Heat treatment

• Stress state

• Exposure duration

For aggressive chemical environments, material selection should be based on the actual service conditions and applicable engineering specification.

High-Temperature Performance

A286 is commonly selected for applications requiring strength and oxidation resistance at elevated temperatures.

Published material references describe A286 as suitable for high-strength service up to approximately 700°C / 1300°F, depending on the application, stress level, product form and specification.

It is therefore used in selected:

• Jet engine components

• Gas turbine hardware

• High-temperature fasteners

• Springs

• Motor components

• Turbocharger components

• Power-generation equipment

Actual allowable operating temperature should always be determined from the engineering specification rather than using a single generic temperature limit.

A286 Stainless Steel Specifications

The applicable specification should be confirmed according to product form and end-use requirements.

A286 Chemical Composition

The exact chemical composition should be controlled according to the applicable specification.

For reference, published A286 specifications commonly control elements including:

• Chromium

• Nickel

• Molybdenum

• Titanium

• Vanadium

• Aluminum

• Boron

• Carbon

• Manganese

• Silicon

• Phosphorus

• Sulfur

For example, published AMS 5737 data specifies nickel at 24.0–27.0%, chromium at 13.5–16.0%, molybdenum at 1.00–1.50%, titanium at 1.90–2.35%, vanadium at 0.10–0.50% and boron at 0.003–0.010%.

Important: Use the exact chemical-composition limits from the standard specified for your supplied product rather than combining limits from different specifications.

A286 Heat Treatment

Heat treatment is an important part of A286 material selection because its mechanical properties depend strongly on the specified condition.

A typical material-processing sequence may include:

Solution Treatment → Cooling → Age Hardening → Mechanical Property Verification

The actual heat-treatment cycle depends on:

• Product form

• Applicable standard

• Required strength

• Required hardness

• Dimensional requirements

• Service temperature

• Customer specification

Published information for A286 includes solution treatment and age-hardening conditions specified under different AMS standards. For example, one commonly referenced condition uses solution annealing around 980°C followed by aging, but the exact cycle must follow the applicable specification.

A286 vs Conventional Stainless Steel

A286 is not simply a general-purpose stainless steel substitute.

Its main advantage is the combination of high strength, corrosion resistance and precipitation-hardening capability, together with useful non-magnetic performance.

The correct grade should be selected according to the actual combination of corrosion, temperature, strength, magnetic and fabrication requirements.

A286 for Motor Shaft Sleeves

A286 can be considered for motor shaft sleeves and other rotating components where high strength, corrosion resistance and non-magnetic performance are important.

For motor shaft sleeve applications, buyers should evaluate:

• Shaft diameter

• Sleeve wall thickness

• Rotational speed

• Operating temperature

• Radial load

• Friction conditions

• Surface finish

• Dimensional tolerance

• Magnetic requirements

• Heat-treatment condition

For rotating components, dimensional accuracy and surface condition can be as important as the nominal alloy grade.

A286 for Aerospace Applications

A286 is widely used in aerospace and aircraft-related applications where high strength, corrosion resistance and temperature capability are required.

Typical applications can include:

• Jet engine components

• High-temperature fasteners

• Springs

• Retaining components

• Turbine-related hardware

• Structural hardware

• Precision aerospace components

Published industry sources identify A286 as a material for jet-engine components, high-temperature fasteners and springs.

For aerospace procurement, the applicable AMS specification, product form, heat-treatment condition and inspection requirements should be confirmed before production.

A286 for High-Temperature Fasteners

A286 is commonly selected for high-temperature fasteners because it can combine high strength with corrosion and oxidation resistance.

Potential applications include:

• Bolts

• Nuts

• Studs

• Washers

• High-temperature fastening systems

• Turbine fasteners

• Engine hardware

Fastener selection should consider preload, temperature, creep, oxidation, thread geometry and applicable aerospace or industrial specifications.

A286 for Cryogenic Applications

A286 can also be used for selected low-temperature applications where high strength and non-magnetic performance are important.

Potential applications include:

• Cryogenic equipment

• Low-temperature mechanical components

• Magnetic-sensitive assemblies

• Specialized valves

• Precision equipment

The suitability of A286 at cryogenic temperatures should be evaluated according to the required toughness, strength, magnetic properties and applicable specification.

A286 Product Forms

Depending on the applicable specification, A286 can be supplied in multiple product forms.

A286 Stainless Steel Bar

Suitable for:

Shafts

Shaft sleeves

Fasteners

Machined components

Precision mechanical parts

A286 Stainless Steel Sheet

Suitable for fabricated components, aerospace parts and industrial applications.

A286 Stainless Steel Plate

Used for heavier fabricated components and industrial equipment.

A286 Stainless Steel Wire

Suitable for selected springs, fasteners and precision applications.

A286 Tube

Available for selected applications according to specification and manufacturing capability.

A286 Forgings

Suitable for demanding aerospace and industrial components requiring controlled mechanical properties.

Published A286 suppliers list forms including bar, wire, sheet, plate, tubing, forgings and rings, although actual availability depends on the required specification and supplier capability.

A286 Stainless Steel Standards

A286 can be specified under different standards depending on the product form and application.

Commonly referenced specifications include:

• ASTM A453 Grade 660

• ASTM A638 Grade 660

• ASTM B637

• AMS 5525

• AMS 5731

• AMS 5732

• AMS 5734

• AMS 5737

• AMS 5805

• AMS 5853

• AMS 5895

The correct specification must be selected according to the required product form and application. Published A286 references list multiple AMS and ASTM specifications rather than one universal specification.

A286 Quality Control

A286 requires control of both alloy composition and heat-treatment condition.

A typical quality-control workflow can include:

Raw Material Inspection → Chemical Composition Verification → Dimensional Inspection → Heat-Treatment Verification → Mechanical Testing → Surface Inspection → Magnetic Property Verification → Final Inspection → Documentation

Depending on project requirements, quality documentation may include:

• Material Test Report

• Chemical composition report

• Tensile strength

• Yield strength

• Elongation

• Hardness

• Heat-treatment condition

• Dimensional inspection

• Surface inspection

• Magnetic permeability test

• Quality certificate

• Third-party inspection

For aerospace and critical rotating applications, customers should provide the complete inspection specification before production.

How to Choose A286 Stainless Steel

When sourcing A286, do not specify only:

A286 stainless steel

A better procurement specification should include:

1. Alloy Designation

A286 / UNS S66286

2. Product Form

For example:

• Bar

• Sheet

• Plate

• Wire

• Tube

• Forging

3. Dimensions

Specify:

• Diameter

• Thickness

• Width

• Length

• Tolerance

4. Heat-Treatment Condition

Specify the required solution-treated or age-hardened condition according to the applicable standard.

5. Mechanical Properties

Specify:

• Tensile strength

• Yield strength

• Elongation

• Hardness

6. Magnetic Requirement

If the component is magnetic-sensitive, specify the required permeability limit and test method.

7. Surface Finish

Specify the required surface condition and roughness where applicable.

8. Certification

Confirm whether you require:

• MTR

• Mill certificate

• Heat-treatment record

• Mechanical test report

• Chemical composition

• Magnetic test

• Third-party inspection

• A286 Stainless Steel Supplier

Hefei Ke Ningman New Energy Materials Technology Co., Ltd. supplies A286 stainless steel / UNS S66286 for industrial and engineering applications requiring high strength, corrosion resistance and non-magnetic performance.

Our supply and processing services can include:

• A286 stainless steel material supply

• A286 bar and wire

• A286 sheet and plate

• Custom dimensions

• Precision machining

• Heat-treatment requirements

• Bulk orders

• OEM material sourcing

• Quality inspection

• Material documentation

Whether you are sourcing A286 for motor shaft sleeves, aerospace components, high-temperature fasteners, springs, turbine components or cryogenic equipment, provide your grade, product form, dimensions, quantity, specification and required properties for a quotation.

Request an A286 Stainless Steel Quote →

Frequently Asked Questions

What is A286 stainless steel?

A286 is an iron-based, nickel-chromium precipitation-hardening alloy commonly identified as UNS S66286 and W.Nr. 1.4980. It is used where high strength, corrosion resistance, temperature capability and non-magnetic performance are required.

Is A286 stainless steel non-magnetic?

A286 is an austenitic alloy and is widely used for non-magnetic applications. Actual magnetic permeability depends on material condition, processing and test conditions.

What is the UNS number for A286?

The UNS designation for A286 is S66286. It is also commonly identified as W.Nr. 1.4980 and Alloy 660.

What is A286 used for?

Common applications include aerospace components, high-temperature fasteners, springs, turbine hardware, motor components and selected cryogenic or magnetic-sensitive equipment.

Is A286 precipitation hardenable?

Yes. A286 is an age-hardenable precipitation-hardening alloy. Controlled heat treatment is used to develop the required mechanical properties.

Can A286 be used at high temperatures?

A286 is used for high-temperature applications and can provide useful strength and oxidation resistance at elevated temperatures. The applicable operating limit depends on stress, exposure time, product condition and specification.

Is A286 suitable for motor shaft sleeves?

A286 can be considered for motor shaft sleeves where high strength, dimensional stability, corrosion resistance and non-magnetic performance are required. Final selection should be based on the shaft design, temperature, load, speed and surface requirements.

What is the difference between A286 and 17-4PH stainless steel?

A286 is an austenitic precipitation-hardening alloy with high nickel content and non-magnetic characteristics, while 17-4PH is a martensitic precipitation-hardening stainless steel with different magnetic and mechanical behavior. The appropriate grade depends on the application.

Can you supply custom A286 stainless steel?

Yes. Custom dimensions, product forms and processing requirements can be discussed according to engineering drawings and applicable specifications.

Can you provide A286 material certificates?

Material certificates and inspection documentation can be supplied according to the applicable specification and order requirements.

Request an A286 Stainless Steel Quote

Looking for high-strength, non-magnetic A286 stainless steel?

Send us:

• A286 / UNS S66286

• Product form

• Dimensions

• Quantity

• Heat-treatment condition

• Applicable ASTM / AMS specification

• Mechanical requirements

• Magnetic requirements

• Surface finish

• Inspection requirements

Our technical team can review your requirements and provide a suitable A286 stainless steel material solution.

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