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USGI Imperial non-magnetic..

Bwana John

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What is the blade made of?
made in 1961 by the Imperial Knife Company under contract to the US Navy specifically for Divers working with or around magnetically detonated underwater mines like the MK56. This knife is made of Haynes Alloy no. 25 which is a copper-chromium-tungsten-nickel alloy similar to Stellite. It is non-magnetic, non-sparking and non-rusting even in seawater, yet unlike many other non-ferrous metals like the titanium used in Mission Knives it has the ability to be hardened to allow it to hold a cutting edge with a Rockwell C scale value of 53 to 54 which is per the final Naval specification.
 

1911Ron

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made in 1961 by the Imperial Knife Company under contract to the US Navy specifically for Divers working with or around magnetically detonated underwater mines like the MK56. This knife is made of Haynes Alloy no. 25 which is a copper-chromium-tungsten-nickel alloy similar to Stellite. It is non-magnetic, non-sparking and non-rusting even in seawater, yet unlike many other non-ferrous metals like the titanium used in Mission Knives it has the ability to be hardened to allow it to hold a cutting edge with a Rockwell C scale value of 53 to 54 which is per the final Naval specification.
Very interesting thank you.
 

yovinny

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Im not sure why the second 2 pics turned upside-down when posted here ??
Teir the correct orientation as taken on my phone... ?
 
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