Nitronic 90
Nitronic 90



Features：

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)

 

 

Nominal composition，%

Alloy 

designation

C

Ni

Cr

Co

Pb

Fe

Al

B

Ti

S

Mn

Cu

Zr

Si

Alloy 90

Nimonic 90

0.2

Bal

18~21

15~21

0.002max

1.5

1~2

0.02

2~3

0.015

1

0.2

0.15

1

 

 

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

-

-

-

295max

Nimonic 90 bar

Precipition Treated (BS HR2)

RT

695MIN

1080MIN

20MIN

310min

Nimonic 90 Bar

Precipitation Treated (BS HR2)

500

672(typical)

1038(typical)

31

-

 

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

 


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