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Nb521

Nb521 alloy (Nb-5W-2Mo-1Zr) has a melting point close to about 2600°C, and its tensile strength ranges from 420MPa to 480MPa in the M state and 650Mpa to 760Mpa in the Y state. Mainly used for aerospace engine nozzles.

Chemical composition of Nb521 (mass fraction)

Grade	Chemical Composition / %
Grade	Nb	W	Mo	Zr
Nb521	Balance	4.7~5.5	1.7~2.5	0.7~1.2