This video www.RexMetals.com reports on aerospace metals Invar. The video goes through hastelloy X, Invar invented, its uses, discoveries and modern Metal. (https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjs_mXkT9LgxN50nZJFI906ZPFRh6KyIqfUdUyVGNJLEp66ULCSEbukqeM7YrYPUCuyKZpGDAXpQdk9QWiYmCedowFU-l5SwjQFVHbPIz11WEwlkH9RVRWOq9Ygg-oZUL0wXLTDDPgVDs0i/s72/Invar_steel_hastelloy_X.jpg)
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