Incoloy A-286* Specification
*Trade name of Special Metals Group of Companies
- W.NR 1.4944
- W.NR 1.4980
- UNS S66286
- AWS 023
Applicable Standards:
- AMS 5731
- AMS 5734
- AMS 5737
- AMS 5853
- BS HR 650
- BS HR 52
- NACE MR0175 / ISO 15156-3
This age hardenable, Iron-Nickel-Chromium alloy is designed for applications requiring high strength and good corrosion resistance at temperatures up to 700oC (1290oF).
| Good Mechanical Properties at Elevated Temperatures | Yes |
| Corrosion Resistant at Ambient Temperatures | No |
| Corrosion Resistant & Good Mechanical Properties at Elevated Temperatures | Yes |
| Oxidation Resistant | Yes |
| Precipitation Hardenable | Yes |
Applications include:
- Jet Engines
- Super Chargers
- After Burner Parts
- Fasteners
| Approximate Chemical Composition | |
| Fe | 56.5% |
| Ni | 25.5% |
| Cr | 15% |
| Ti | 2.1% |
| Mo | 1.25% |
| Properties | ||
| DENSITY | 7.94 g/cm3 | 0.287 lb/in3 |
| MELTING POINT | 1430oC | 2600oF |
| COEFFICIENT OF EXPANSION | 16.4 µm/m °C (20 - 100°C) |
9.1 x 10-6 in/in
°F (70 - 212°F) |
| MODULUS OF RIGIDITY | 71.5 kN/mm2 | 10370 ksi |
| MODULUS OF ELASTICITY | 205 kN/mm2 | 29733 ksi |
| CONDITION OF SUPPLY | HEAT TREATMENT (AFTER FORMING) |
| Annealed/Spring Temper | Age harden at 705 - 760oC (1300 - 1400oF) for 16 hours and air cool. |
| CONDITION | APPROX TENSILE STRENGTH | APPROX SERVICE TEMPERATURE | ||
| Annealed | 600 - 750 N/mm2 | 87 - 109 ksi | -200 to +400oC | -330 to +750oF |
| Annealed + Aged | 1100 - 1300 N/mm2 | 159 - 188 ksi | -200 to +400oC | -330 to +750oF |
| Spring Temper | 1050 - 1250 N/mm2 | 152 - 181 ksi | -200 to +400oC | -330 to +750oF |
| Spring Temper + Aged | 1300 - 1500 N/mm2 | 188 - 218 ksi | -200 to +400oC | -330 to +750oF |
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