Bellota Rasps

Joined
Aug 24, 2014
Messages
765
Anyone used them and what could the steel possibly be? I do not think they are case-hardened.
I just got a bunch. Any feedback greatly appreciated!
 
Joined
Jan 31, 2018
Messages
2,333
I've seen this posted for 1045:
austenitizing temperature of 1475-1550ºF (800-845ºC) and oil or water quenching

Flame and induction hardening may be carried out by heating quickly to the desired case depth and quenching in water or oil. This should be followed by a tempering treatment at 300-400ºF (150-200ºC) to reduce stresses in the case without affecting its hardness. A surface hardness of Rc 58 may be obtained by this treatment.
 
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