Hss

mete

mete

Joined
Jun 10, 2003
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The HSS family , with few exceptions contain various amounts of tungsten. Looking through the list one of those exceptions is M10. That would seem more appropriate for knives than the others . M10 - .90 C, Cr 4.00, V 2.00, Mo 8.25 . Has anyone used it ?
 
no but now that you bring it up i would like to thanks mete now i have to ask about it next order
 
I am experimenting with CPM-M4. It is similar to M10 (sort of), with more vanadium and less Molybdenum. There is also a good bit more carbon and 5% tungsten. The carbides formed are very hard, and the toughness is good.The CPM grain structure makes it even better. I'll keep you posted as to my results.
Stacy
 
stacy what temps you planing on quenching from i would like ot stay under 2100 but if need be would run hotter
 
I'm leaning toward 2000F austenitization and 1050F temper. That should get a tough blade around Rc 60-61.
Stacy
 
Mete
i havent used m-10 yet but ive used a lot of m-2 /m-4 probably in excess of 100 blades worth . personally i love the stuff it is a real bitch to work but totally worth it . if you have any specific question i may be able to help with please ask .
 
mete i cant seem to find any info at all on M10 but since its just about the "cpm2v" i had asked about in the other thread. do you have any more info then the spec
 
I haven't looked for more than the spec .I asked because of comments on www.nisi.no if anyone can read Norwegian ! He states using M2 but his chemistry is closest to M10. I guess I should have asked for experiences about all HSS in making and use .Is the extra work in grinding worth improved performance etc. Many makers are not happy about grinding S30V. Which HSS steels have you used and which do you prefer ???
 
i have just dabbled in the M2 thing and have worked cpm10v (A11) 3v i thought i had a line on just about all the T1 i could handle if i wanted it (may still try some )

M2 once hardened was nice to grind compared to 10v as 10v at 63 RC is grinding nightmare ive not heard any of my 10v blades getting dull yet tho so maybe its worth it
 
Some people make knives out of full hard HSS power hack saw blades, forgoing the need for HT. There is a guy, Alvin in Arizona, that makes meat processing knifes this way. For skinning cows etc. Really fine honing angles, like around 5 deg. Did well in Cliff Stamps cutting tests. Apparently holds an edge well and cuts like the devil, when used with care.

I have made a couple of crude knifes (read: tape for handles) for use around the shop in M42 cobalt HSS. In a side by side comparison to a HRC 62 D2 blade, and a production Gerber blade, the M42 had the best abrasion resistance in my use. Not by a huge amount, but noticeable.

I was using it to slit rolls of Scotch-Brite before feeding it into a press. Abrasion was a real problem. Very hard M42 held up fairly well.
 
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