Alloy A286 Specifications and Standards – UNS S66286, ASTM A638 and AMS
Alloy A286 Specifications and Standards – UNS S66286, ASTM A638 and AMS
H1: Alloy A286 Specifications and Material Standards – UNS S66286
Primary Focus Keyword: Alloy A286 Specifications
Secondary Keywords:
- UNS S66286 specifications
- ASTM A638 A286
- A286 AMS specifications
- Alloy 286 material standards
- A286 chemical composition
- A286 mechanical properties
- EN 1.4980 material
- A286 material test certificate
- A286 round bar specifications
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Meta Description: Learn about Alloy A286 specifications, UNS S66286, ASTM A638/A638M and applicable AMS standards, including material certification and procurement requirements.
Introduction
When purchasing Alloy A286 for industrial engineering, high-temperature equipment or critical components, confirming the alloy designation alone is not enough. Buyers must also identify the correct product specification, material condition, mechanical requirements, dimensions and inspection documentation.
Alloy A286, identified by UNS S66286 and commonly called Alloy 286, is a precipitation-hardening iron-nickel-chromium alloy. It is used in selected applications requiring a combination of elevated-temperature strength and oxidation resistance.
Different standards can apply depending on whether the material is supplied as bar, forging stock, forgings, sheet, strip, wire or a finished component. Understanding these distinctions helps procurement teams avoid ordering material that does not meet the engineering drawing or end-user requirements.
Manan Steel & Metals supports industrial material enquiries. Buyers should confirm the exact specification, product form, required condition and availability before placing an order.
Table of Contents
- Alloy A286 Identification and Designations
- ASTM A638/A638M and Its Scope
- AMS Specifications for A286
- Chemical Composition Requirements
- Mechanical Properties and Heat Treatment
- Material Test Certificates and Inspection
- A286 Procurement Checklist
- Frequently Asked Questions
- Enquire About Alloy A286
1. Alloy A286 Identification and Designations
Alloy A286 is available under several commonly used names and identification systems.
| Designation | Description |
|---|---|
| A286 | Common alloy designation |
| Alloy 286 | Alternative alloy name |
| UNS S66286 | Unified Numbering System designation |
| EN 1.4980 | European material number associated with A286 |
| Precipitation-hardening alloy | Describes the strengthening approach |
These designations help identify the alloy family, but they do not independently establish compliance with a particular product specification.
For example, a purchase order for A286 round bar may require a particular ASTM or AMS specification, specified heat-treatment condition, dimensional tolerance and testing documentation. A different product form may require a different standard.
Reference: ATI A286 Alloy Technical Information.
2. ASTM A638/A638M and Its Scope
ASTM A638/A638M is titled Standard Specification for Precipitation-Hardening Iron Base Superalloy Bars, Forgings, and Forging Stock for High-Temperature Service.
It is an important specification to consider when the required A286 product form and application fall within its scope.
Official reference: ASTM A638/A638M.
What should buyers verify?
Before specifying ASTM A638/A638M, confirm:
- The material grade required by the drawing or purchase specification
- Whether the required product form is covered
- The required heat-treatment condition
- Mechanical testing and acceptance criteria
- Dimensional and surface-quality requirements
- Certification, traceability and inspection documentation
Important: ASTM A638/A638M should not automatically be applied to every A286 product. The governing standard must match the required product form and engineering application. Buyers should also verify the current edition and any contractual amendments.
3. AMS Specifications for A286
Aerospace Material Specifications (AMS) published by SAE International cover defined material forms, processing conditions and quality requirements. Specific AMS documents may be relevant to A286 bars, forgings, sheet, strip or other product forms.
The applicable specification depends on the component design, material form and required condition.
How to identify the correct AMS specification
- Check the engineering drawing or bill of materials.
- Confirm whether the requirement covers raw material or a finished component.
- Verify the exact AMS number and revision.
- Confirm the required solution-treatment and precipitation-hardening condition, where specified.
- Check mechanical test requirements, inspection criteria and certification requirements.
Official reference: SAE International Standards.
Do not assume that all AMS specifications for A286 are interchangeable. A material supplied to one specification may not satisfy the requirements of another, even when the alloy designation is the same.
4. Alloy A286 Chemical Composition Requirements
A286 contains iron, nickel, chromium, molybdenum and titanium, along with controlled additions of other elements. Its chemical composition is designed to support its mechanical performance and precipitation-hardening response.
The following table describes the principal alloying elements and their general functions. It is not a substitute for the numerical composition limits in the applicable specification.
| Element | General role |
|---|---|
| Iron | Base metal of the alloy |
| Nickel | Supports the austenitic structure and high-temperature performance |
| Chromium | Contributes to oxidation resistance |
| Molybdenum | Contributes to strength and other alloy properties |
| Titanium | Plays an important role in precipitation hardening |
| Carbon and other controlled elements | Affect properties and must remain within specification limits |
Why chemical composition verification matters
Chemical composition helps establish whether a material meets the specified alloy requirements. However, chemistry alone does not prove that the material meets the required mechanical properties or heat-treatment condition.
For critical applications, buyers should verify the chemical analysis reported on the material test certificate against the actual governing specification.
5. Mechanical Properties and Heat Treatment
A286 is a precipitation-hardening alloy. Its mechanical properties depend on the product form, manufacturing route, heat-treatment condition and applicable standard.
Two materials identified as A286 may not have identical mechanical properties if they were supplied under different product specifications or in different conditions.
Mechanical properties to verify
Depending on the specification, the required mechanical test results may include:
- Tensile strength
- Yield strength
- Elongation
- Hardness
- Other specified tests relevant to the product form or application
Heat-treatment condition
A286 commonly undergoes solution treatment followed by precipitation hardening when required by the applicable specification. The actual temperature, holding time, cooling method and aging cycle must be taken from the governing material specification or an approved processing procedure.
Do not apply a heat-treatment schedule from a different product form or specification without confirming its suitability.
For manufacturer information, refer to ATI A286 technical data.
Why the final condition matters
A purchase order should clearly state the required condition rather than simply saying “A286.” Where the application is critical, confirm that the supplied condition and reported test results satisfy the drawing, applicable specification and end-user requirements.
6. A286 Material Test Certificates and Inspection
Material certification provides evidence that the supplied material has been tested or verified against specified requirements. The exact documents required depend on the purchase order and applicable standard.
What should an A286 material test certificate include?
Where applicable, review the certificate for:
| Certificate detail | What to check |
|---|---|
| Material designation | A286 / UNS S66286 as specified |
| Governing specification | Correct ASTM, AMS or customer specification and revision |
| Heat or lot number | Traceability between the material and documentation |
| Chemical analysis | Reported values against specified composition limits |
| Mechanical test results | Required values and acceptance criteria |
| Heat-treatment condition | Condition matches the purchase requirement |
| Product form and dimensions | Consistent with the order |
| Inspection details | Additional tests or checks required by the specification |
A certificate should be reviewed against the actual purchase order. Not every document contains the same information, and the exact certification level must be agreed upon before ordering.
When additional inspection may be necessary
Critical turbine, power-generation and aerospace-related applications may require additional inspection, testing, traceability or customer approval. These requirements should be stated clearly in the enquiry and purchase order.
7. A286 Procurement Checklist
Use the following checklist when sourcing A286 material for an industrial project.
- Confirm the alloy designation: A286 / UNS S66286.
- Specify the product form: bar, forging, sheet, strip, wire or another form.
- State the required dimensions and tolerances.
- Identify the exact ASTM, AMS or customer specification.
- Specify the required heat-treatment condition.
- Confirm the mechanical testing and acceptance criteria.
- State material certification and traceability requirements.
- Identify any additional inspection or testing requirements.
- Confirm quantity, delivery destination and required delivery schedule.
- Obtain confirmation that the offered material meets the specified requirements.
A complete enquiry reduces the risk of delays caused by unclear product descriptions or missing technical details.
8. Frequently Asked Questions
What is the UNS number for Alloy A286?
The UNS designation for Alloy A286 is S66286. It is also commonly known as Alloy 286 and is associated with European material number 1.4980.
What is ASTM A638/A638M used for?
ASTM A638/A638M covers precipitation-hardening iron-base superalloy bars, forgings and forging stock for high-temperature service. Buyers should verify that the required A286 product form and application fall within the specification’s scope.
Are ASTM A638 and AMS specifications interchangeable?
No. Different standards may cover different product forms, processing conditions and acceptance criteria. The specification named on the engineering drawing or purchase order should govern.
Does A286 have one fixed set of mechanical properties?
No. Mechanical properties depend on the product form, heat-treatment condition and applicable specification. Buyers should use the values required by the governing standard rather than assuming one set of values applies to every A286 product.
What should buyers check on an A286 material test certificate?
Check the material designation, specification and revision, heat or lot traceability, chemical analysis, required mechanical test results, heat-treatment condition and any additional inspection requirements specified in the purchase order.
Is A286 suitable for every high-temperature application?
No. A286 is used in selected high-temperature applications, but suitability depends on temperature, stress, exposure duration, environment, fatigue and creep requirements, and component design.
Where can I enquire about A286 material in India?
Industrial buyers can contact Manan Steel & Metals in Mumbai with the required product form, dimensions, specification and certification requirements. Availability should be confirmed for the specific enquiry.
9. Enquire About Alloy A286 with Manan Steel & Metals
Manan Steel & Metals supports industrial buyers seeking specialty metals and engineering materials. If your requirement involves Alloy A286 / UNS S66286, share the exact technical specification so the required product form and documentation can be reviewed.
When sending an enquiry, include:
- Alloy: A286 / UNS S66286
- Product form and dimensions
- Applicable ASTM, AMS or customer specification
- Required heat-treatment condition
- Quantity and delivery location
- Material test certificate and inspection requirements
Contact Manan Steel & Metals
- Phone: +91 7977369869
- Email: manansteel@gmail.com
- Location: Girgaon, Mumbai, Maharashtra, India
- Website: Manan Steel & Metals
Contact the team to discuss your industrial material requirements and confirm the applicable supply options.
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- Link Blog 1: Alloy A286 Heat Treatment and Mechanical Properties – UNS S66286.
- Link Blog 2: Alloy A286 Fasteners for High-Temperature Engineering – UNS S66286.
- Link Blog 3: Alloy A286 Applications in Gas Turbines and Power Generation – UNS S66286.
- Add a link to Blog 5, the A286 price and buying guide, after publication.
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