Material data sheet 1.4980
International Standards:
AISI 660 / ASTM A453 Grade 660 | UNS S66286 | Alloy A-286
Applications:
Iron-nickel-chromium alloy for use at elevated and/or low temperatures. Components for gas turbines and engines, such as rotors, discs, shafts, bolts, screws, spacers, fittings, housings, and pump blocks. Also used in the fracking industry, oil and gas components. Parts with high mechanical requirements up to 700°C, as well as non-magnetic components for low-temperature applications.
Field of application:
| - Mechanical Engineering |
| - Aerospace |
| - Energy Technology |
| - Petrochemical Industry |
Characteristics:
| Polishability | |
| Weldability | |
| Machinability | |
| Forgeability | |
| Corrosion resistance | very good up to 700°C |
| Corrosion class |
Physical properties:
| Density | 8 |
Mechanical properties:
| Hardness HBW | 248-341 |
| 0,2 % proof strength | |
| Tensile strength max. (at H950 condition) | 900-1150 N/mm² |
| Elongation at break | |
| Notched bar impact energy |
Special properties:
| Best heat resistance and ductility at low temperatures | |
| Good creep strength | |
| ESR variant with further enhanced corrosion resistance |
Processing:
| Cold forming | |
| Cold heading | |
| Open-die and drop forging | |
| Machining / Chip-removing processing |
Heat treatment:
| Forging | 950 - 1.100°C |
| Welding | WIG |
| Annealing | 970℃ - 990℃, Wasser / Öl |
| Aging | Stufe I 700 - 735°C / Stufe II 710 - 730°C |
| Hardening | 885 - 915 °C Wasser / Öl |
Chemical analysis:
| 1.4980 | C | Si | Mn | P | S | Cr | Mo | Ni | Al | Ti |
|---|---|---|---|---|---|---|---|---|---|---|
| min. | 0,03 | 1,00 | 13,50 | 1,00 | 24,00 | 1,9 | ||||
| max. | 0,08 | 1,00 | 2,00 | 0,025 | 0,015 | 16,00 | 1,50 | 27,00 | 0,35 | 2,3 |
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