A-286 is a Ni-Cr austenitic precipitation-hardened iron-based alloy and one of the original superalloys. It is widely used in applications requiring high strength and corrosion resistance up to 1,300°F (704°C), while also maintaining useful properties in cryogenic environments. Its relatively low alloy content and cost-effective formulation make it a practical choice for a wide range of high-performance applications.
In addition to its temperature capabilities, A-286 offers an excellent balance of strength, oxidation resistance, and fabrication characteristics, making it well-suited for components exposed to prolonged thermal and mechanical stress. It retains mechanical properties over a wide temperature range and performs reliably in oxidizing environments where both durability and environmental resistance are required.
A-286 is typically produced by vacuum induction melting (VIM), followed by vacuum arc remelting (VAR) or electroslag remelting (ESR), ensuring a high level of material cleanliness and consistency. It is also valued for its processing versatility, as it can be machined, formed, and welded prior to precipitation hardening. Once heat treated, it delivers consistent strength and dimensional stability, making it a dependable choice for critical components subject to cyclic loading and pressure.
Typical applications include jet engine and aerospace components such as wheels, blades, casings, afterburner and sound suppressor parts, fuel nozzles, as well as fasteners, extrusion tooling, and other high-temperature hardware. This alloy is designated Grade or Type 660 in several specifications.
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Stainless Type A-286 Chemical Composition
Chemical Composition (wt%) limits as specified in ASTM A638 and ASME SA638*
| Carbon | 0.08 | Silicon | 1.00 |
| Chromium | 13.50-16.00 | Phosphorus | 0.040 |
| Nickel | 24.00-27.00 | Sulfur | 0.030 |
| Molybdenum | 1.00-1.50 | Aluminum | 0.35 |
| Titanium | 1.90-2.35 | Vanadium | 0.10-0.50 |
| Manganese | 2.00 | Boron | 0.0010-0.010 |
*Maximum, unless range is indicated
Stainless Type A-286 Physical Properties
| Density, lb/in3 | 0.287 |
| Modulus of Elasticity, psi | 29.1 x 106 |
| Coefficient of Thermal Expansion, 68-212˚F, /˚F | 9.2 x 10-6 |
| Thermal Conductivity, Btu/ft hr ˚F | 8.7 |
| Specific Heat, Btu/lb ˚F | 0.10 |
| Electrical Resistivity, Microhm-in | 35.8 |
Stainless Type A-286 Mechanical Properties
Mechanical property requirements for heat treated product as specified in ASTM A638 and ASME SA638
| Yield Strength, min. (ksi) | 85 |
| Tensile Strength, min. (ksi) | 130 |
| Elongation, min. (%) | 40 |
Stainless Type A-286 Standards
Typical standards for Type A-286
| ASTM A543 |
| ASTM A638 |
| ASTME A638 |
| AMS 5731 |
| AMS 5732 |
| AMS 5734 |
| AMS 5737 |
Your Source for Stainless Type A-286
At Double Eagle Alloys, we supply Stainless Type A-286 in long bar engineered for these demanding services. Contact our team to learn how Stainless Type A-286 can support long-term performance and reliability.
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Data shown are typical and provided for informational purposes only. Values should not be considered minimums or maximums for specification or final design. Actual product data may vary, and information may be revised without notice.