I got a nice straw color in the first 2 hour cycle, should I do a second cycle?

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Not enough information to even make an educated guess. What kind of steel? What temperature of the HT?

So do you think I should do another cycle,or wait 24 hours then 2nd cycle

1095  and 15 n 20 steel 2hours at 400 clip point knife

Anybody

I would have done two, one hour cycles at 400f. You can go another hour at 400f. Not going to make much difference. You just need to come to room temp. between cycles. Straw is what you want.

THANKYOU I got a nice dark straw color and looks great,just whasent sure about the 2nd cycle 

The color is only an indication of what temperature the surface of the steel go to. (not a very good indicator by the way)  It does not indicate anything about how complete the tempering process is.

Generally speaking, you'll want more than one temper cycle regardless of what color the steel turns.  There are numerous descriptions of the changes that happen to the structure of the steel around here that would explain it better than I can.

Edit: Oops, sorry, I just realized this is an older thread.