High-tensile steel

[hoezap]

the body cutter of any indexable cutter

[komatias]

I would say they are engineering steels. No need for high tensile properties.

[magicniner]

the body cutter of any indexable cutter

Cutter Body means "the body of a cutter"
Body Cutter means "a cutter for use on a body"

I asked the question because even the context in which the question was asked left the meaning ambiguous and I wondered if you might be referring to the kind of sheet metal cutters used by panel beaters and body workers.