Custom Knives | Other Knives | General Items
New Posts | New PhotosAll Photos

Go Back   The Knife Network Forums : Knife Making Discussions > Custom Knife Discussion Boards > Knife Making Discussions > Heat Treating and Metallurgy

Heat Treating and Metallurgy Discussion of heat treatment and metallurgy in knife making.

Thread Tools Display Modes
Old 04-20-2005, 01:06 PM
Rocket_Jason Rocket_Jason is offline
Steel Addict
Join Date: Feb 2004
Location: East Tawas, MI
Posts: 275
Tempering 6150

Hi Y'all-

I will be heat treating a bowie of 6150 tonight. I figured that I would heat the steel up to non-magnetic and then soak in the heat for 20 seconds or so before quenching. This is pretty standard for most steels in my understanding.

But what I don't know is the time/temp figures for tempering the blade. Could someone point me in the right direction?

Reply With Quote
Old 04-20-2005, 01:39 PM
Jamey Saunders's Avatar
Jamey Saunders Jamey Saunders is offline
Join Date: Jul 2002
Location: Portal, GA - If you know where it is, you probably got a speeding ticket.
Posts: 1,951
Send a message via AIM to Jamey Saunders Send a message via MSN to Jamey Saunders Send a message via Yahoo to Jamey Saunders
From Anvilfire, posted by Quenchcrack:


Anneal at 1525?F then cool rapidly to 1300?F and cool to 1200?F at no more than 20?F/h for 5 hours.

To harden heat to 1525?F and quench in oil. Temper as needed (minimum of 350?F).

Austempering at 1550?F and quench in a salt bath at 600?F and hold for 1 hr. Cool in air, no further tempering is needed.

According to the Bethlehem book "Modern Steels - Handbook 3310" the following are APPROXIMATE Rockwell C hardnesses of oil quenched 5160 for various tempering temperatures:

SAE 5160
Temperature Hardness Temperature Hardness
400?F 59 Rc 900?F 42 Rc
500?F 57 Rc 1000?F 37 Rc
600?F 54 Rc 1100?F 32 Rc
700?F 52 Rc 1200?F 28 Rc
800?F 49 Rc 1300?F 20 Rc

Jamey Saunders -- Charter Member, GCKG
(Got a question? Have you tried to for the answer?)

"I won't be wronged, I won't be insulted, and I won't be laid a hand on. I don't do these things to other people, and I require the same of them." --John Wayne, in The Shootist
Reply With Quote
Old 04-20-2005, 01:41 PM
mete's Avatar
mete mete is offline
Join Date: Sep 2004
Location: NY State
Posts: 777
Jamie, he asked for 6150 not 5160 Easy mistake ,I've done it too !!.Curie temperature [nonmagnetic point] is 1414F. Typical hardening temperature of 6150 is 1550F. I would soak for 2-5 minutes. Temper 400F ,2 hours. .....They are comparable steels .. IIRC our bayonets were at one time made from 6150.

Last edited by mete; 04-20-2005 at 06:33 PM.
Reply With Quote
Old 04-20-2005, 07:37 PM
Rocket_Jason Rocket_Jason is offline
Steel Addict
Join Date: Feb 2004
Location: East Tawas, MI
Posts: 275
Thanks for the reply guys. I'll give it a whirl!
Reply With Quote

blade, knife

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -5. The time now is 01:13 AM.

Copyright © 2000
? CKK Industries, Inc. ? All Rights Reserved
Powered by ...

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
The Knife Network : All Rights Reserved