Does anyone have actual results for mcmaster carr oil on 1095?

Kentucky

Kentucky

Joined
Dec 13, 2008
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I wouldent ask but Ive researched and researched and cant seem to find any hard evidence on the as quenched numbers for 1095 in mcmaster carr fast oil...
Ive read umpteen million posts that say something like "works for me" but nothing else :confused: Not that Im hung up on RC numbers but I would like to know where Id be starting.Our general HT for 1095 is a 7 or so minute soak at 1475 then a double temper @450* in case anyones curious.
Thanks
 
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Kentucky, the McMaster Carr oil works just fine for 1095. Several months ago I HT'd
three thicknesses of 1095 in MC 11 sec oil and sent them to a fellow forumite for RC testing.
I did double quench each piece to get the following results. As you can see, each piece
was tested in 4 spots to get an accurate measure. The rc tester was properly calibrated
just prior to this test. I heated to slightly higher than critical, short soak and quenched FAST!
I DID NOT heat the oil prior to quench.

1095HRCTEST.jpg


Hope this helps.
 
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I also tested some 5/32" 1095. Brought it to 1475 soaked for 8-10 minutes and quenched in 125-130 degree 11 sec. oil. As quenched hardness readings were from 66-67. Double tempered at 450 they tested at 59-60. Although I dont have any results to prove it I believe anything under 1/4" in thickness should harden fine with this oil. Hope this helps.
 
nice information, from what i've read in this forum its necessary to "soak" 1095, correct? also, where does everyone get their 1095?
 
I've heard of some people not soaking 1095. I always soak mine for 5 minutes.

I've bought 1095 from Admiral, but I'm switching to Aldo from now on.
 
Chris G said:
nice information, from what i've read in this forum its necessary to "soak" 1095, correct? also, where does everyone get their 1095?
Click to expand...

You are correct. The soak time is to make sure that all the available carbon goes into solution before the quench. You can get 1095 just about anywhere. If you are doing stock removal I suggest you pay the extra money for CRA (cold rolled and annealed). It makes drilling and grinding much easier. Aldo Bruno and Kelly Cupples are good guys to buy steel from.
 
I just don’t understand how you folks can be getting such high hardnesses using such a slow quench oil of 11 seconds on 1095?

If you look at my posting I started here I am having trouble getting a hardness of 60 using Houghto-Quench® K which is a 7 to 9 second oil?
http://www.bladeforums.com/forums/s...-test-results-Brine-Houghto-Quench-k-Apco-K-9

It has been suggested to me on that thread that perhaps I haven’t ground off enough decarb layer so tomorrow I am going to try going deeper and see if that is my problem. In your photo D. Crawford I noticed that your sample piece that is labeled as 1/8 of an inch thick is conveniently laying right beside a ruler and it looks much thinner than that closer to a 16th of an inch. May I ask how much material you removed before you tested it? It looks like quite a bit and that might be my problem?

Nevermind!!!

This morning I ground off .020" and got readings of 65 so I didn't grind off enough decarb. Problem solved.
 
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