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Nickel Alloy 90/ Nimonic 90®
Technical Data Sheet
Nimonic alloy 90 is a precipitation hardenable nickel-chromium-cobalt alloy strengthened by the addition of Titanium and Aluminium. Alloy 90 has a high stress rupture strength and creep-resistant at temperatures to 920°C. Nimonic Alloy 90 is typically used in extreme stress applications such as turbine blades, hot working tools, exhaust reheaters, disc and high-temperature springs.
The recommended heat treatments for Nimonic 90 are as follows:
Nimonic 90 Bar
Solution Treatment - 1080 °C (1975 °F) for 8 hours + air cool or oil/ water quench
Precipitation Heat Treatment (As per BS HR2) - 700 °C (1290 °F) for 16 hours + air cool
Nimonic 90 Sheet
Solution Treatment - 1100-1150 °C for 1-10 minutes + air cool or oil /water quench
Stabilization Heat Treatment - 925 °C for 1 hour + air cool
Precipitation Heat Treatment - 750 °C for 4 hours and air cool
(BS HR202/ MSRR 7016 / Siemens TLV 85252100 do not require the Stabilization Treatment stage)
| Chemical Composition Limits | ||||||||||||||
| Weight % | Ni | Cr | Co | Ti | Al | C | Si | Cu | Fe | Mn | B | S | Zr | Pb |
| Alloy 90 | Bal | 18-21 | 15-21 | 2-3 | 1-2 | 0.2 max | 1.0 max | 0.2 max | 1.5 max | 1.0 max | 0.02 max | 0.015 max | 0.15 max | 0.0020 max |
Typical Mechanical Properties
| Material Extruded Bar | Temperature °C | Yield Strength 0.2 % (MPa) | Tensile Strength (MPa) | Elongation (%) | Hardness HV |
| Nimonic 90 bar Solution Treated (BS HR2) | RT | - | - | - | 295 max |
| Nimonic 90 bar Precipition Treated (BS HR2) | RT | 695 min | 1080 min | 20 min | 310 min |
| Nimonic 90 Bar Precipitation Treated (BS HR2) | 500 | 672 (typical) | 1038 (typical) | 31 | - |
| Material Sheet | Temperature °C | Yield Strength 0.2 % (MPa) | Tensile Strength (MPa) | Elongation (%) | Hardness HV |
| Nimonic 90 sheet Solution Treated (BS HR202) | RT | - | - | - | 250 max |
| Nimonic 90 sheet Precipitation Treated (BS HR202) | RT | 695 min | 1080 min | 25 min (0.45mm-3.0mm) | 280 min |
| Nimonic 90 sheet Precipitation Treated (BS HR 202) | 500 | 740 (typical) | 995 (typical) | 30 | - |
| Alloy 90 Cold Rolled Sheet (Heat Treated) |
Availability
Nimonic Alloy 90 (Nimonic 90) is available in sheet, strip, plate, bar, round bar, flat bar, wire, forging stock, tube, welding wire and extruded section. For all stock availability contact Sales.
Specifications
UNS N07090
Werkstoff Nr. 2.4632
Werkstoff Br. 2.4969
NiCr20Co18Ti
NCK20TA (AIR 9165)
BS HR2
AMS 5829
MSRR 7137, MSRR 7017
| Nimonic 90 bar/wire | Nimonic 90 sheet/plate/strip | Nimonic 90 Tube |
| BS HR2 Nimonic 90 bars, billet, forgings | BS HR202 Nimonic 90 sheet and strip | BS HR 402 |
| BS HR501 Nimonic 90 cold drawn wire for springs | MSRR 7087 | AECMA PrEN 2299 |
| BS HR502 Nimonic 90 cold drawn and solution treated wire for springs | AECMA PrEN 2298 | |
| BS HR503 Nimonic 90 wire for thread inserts | Siemens TLV8525 2100 | |
| AMS 5829 | Siemens TLV8525 31001 | |
| AECMA PrEN 2295 | ||
| AECMA PrEN 2296 | ||
| AECMA PrEN 2297 | ||
| AECMA PrEN 2400 | ||
| AECMA PrEN 2401 | ||
| AECMA PrEN 2669 | ||
| AECMA PrEN 2670 | ||
| MSRR 7016 | ||
| MSRR 7137 | ||
| Siemens DL 1641-1 | ||
| ABB Stal 63 73 01 |
