What kind of steel used in Busse Basic 7?

From BadMojo.tv

The Basic Line is made of Modified INFI (Mod-INFI) and has Respirene C Handles. The Combat line is made of INFI and has Canvas Micarta Handles. The Basic line has been retired in 2001.

INFI and Modified INFI are high Carbon Proprietary steels of Busse Combat Knives. These steels were developed specifically for Busse Combat so the manufacturing process is a closely guarded secret. However it is known that they undergo multiple heat/cryo treatments and that INFI has more cobalt in it than Mod-INFI. It is also cheaper to manufacture Mod-INFI and this savings is passed on to the customer in lower prices in the Basic Line. While Mod-INFI is not as durable as INFI it is still superior to other steels used in knife making.
 
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