Ron Hicks Posted June 12, 2006 Share Posted June 12, 2006 (edited) I have tempered this blade at 400 deg. for 1 hour 3 times It was forge from a Big Truck spring and from what I have read about 6150 sounds just like 6150. I have made a few knives from 5160 that I bought and it is very different harder to forge it anealed softer the hardened steel was a gray blue ( the veg. oil was heated to 150 deg.the same as with the 5160) it shows a temper line I did notice after tempering there was hardly a staw color very light. It is very hard after tempering - i checked the oven temp. and was on the money. Any one know what temp. to temper 6150 ? Should I just bump the temp 25 deg. and check for a color? Ron Edited June 12, 2006 by Ron Hicks Link to comment Share on other sites More sharing options...
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