Nimonic 90 (UNS N07090)

Nimonic 90 (UNS N07090) 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

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

Product Forms

Wire, Bar, Strip, Sheet, Plate, Tube, Pipe, Pipe Fittings, Forgings

Chemical Composition,%

C	P	S	Mn	Si	Cr	Ni	Co	Al	Ti	Cu	Fe
≤0.13	≤0.02	≤0.015	≤1.00	≤1.00	18.00~21.00	Bal	15.00~20.00	1.00~2.00	2.00~3.00	≤0.20	≤1.50

Typical Physical & Mechanical Properties (RT, Precipitation Hardened)

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

Specifications

Rod, Bar, Wire, Forgings	BS HR2, HR501, HR502, HR503, SAE AMS 5829
Plate, Sheet, Strip	BS HR 202
Pipe, Tube	BS HR 402

Features

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

Applications

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