Nimonic 90 (UNS N07090 / W.Nr. 2.4632)

Nimonic 90 (UNS N07090 / W.Nr. 2.4632) 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.

Equivalent Grades

Trademark	GB	GOST	ASTM	UNS	DIN	W.Nr.	NF	BS	JIS	SS
Nimonic 90	GH4090	–	Nimonic 90	N07090	NiCr20Co18Ti	2.4632	NC20T	NiCr20Ti HR 5	–	–

Chemical Composition, %

Alloy

Nimonic 90

≤0.13

≤1.00

≤0.020

≤0.015

18.0-21.0

Bal

15.0-20.0

1.0-2.0

2.0-3.0

≤0.20

Bal

Typical Physical and Mechanical Properties (RT, Annealed)

Density, g/cm3	Melting Point, ℃	Tensile Strength, MPa	Yield Strength, MPa	ELongation, %	Hardness, HRB
8.18	1310-1370	≥1080	≥690	≥20	/

Available Products and Specifications

Rod, Bar, Wire and Forgings	BS HR2, HR501, HR503, AMS 5829
Plate, Sheet and Strip	BS HR 202
Pipe and Tube	BS HR 402
Welding Product	–
Others	–

Features

Nimonic 90 has a high stress rupture strength and creep-resistant at temperatures to 920°C.

Applications

Nimonic 90 is typically used in extreme stress applications such as turbine blades, hot working tools, exhaust reheaters, disc and high-temperature springs.