carbide
I bought a bunch of endmills from a machine shop going out of
business. The seller told me some of them were carbide. I saw some of them that were dull grey instead of shiny steel but they were all magnetic. Is tungsten carbide magnetic? Engineman |
carbide
On Jun 15, 4:04*pm, " wrote:
I bought a bunch of endmills from a machine shop going out of business. The seller told me some of them were carbide. I saw some of them that were dull grey instead of shiny steel but they were all magnetic. Is tungsten carbide magnetic? Engineman Yep, the binder is cobalt which is magnetic. |
carbide
wrote in message ... I bought a bunch of endmills from a machine shop going out of business. The seller told me some of them were carbide. I saw some of them that were dull grey instead of shiny steel but they were all magnetic. Is tungsten carbide magnetic? Engineman Tungsten carbide itself isn't, but the cobalt binder is. The endmills also will be noticeably heavier than HSS. -- Ed Huntress |
carbide
On Jun 15, 4:04*pm, " wrote:
I bought a bunch of endmills from a machine shop going out of business. The seller told me some of them were carbide. I saw some of them that were dull grey instead of shiny steel but they were all magnetic. Is tungsten carbide magnetic? Engineman Magnetic, but more weakly than steel would be. The density is the real giveaway - they will be far heavier than a steel cutter of the same size. Enough so that you shouldn't have to find a steel one to compare - it will be much heavier than experience tells you it should be. John Martin |
carbide
" wrote:
I bought a bunch of endmills from a machine shop going out of business. The seller told me some of them were carbide. I saw some of them that were dull grey instead of shiny steel but they were all magnetic. Is tungsten carbide magnetic? Engineman Yup, spin them 400 fpm or so, do not over feed them. Do not used them in non-rigid setups. Wes |
carbide
Ed Huntress writes:
The endmills also will be noticeably heavier than HSS. Ed of course means to say, *denser* than HSS, not necessarily heavier. |
carbide
"Richard J Kinch" wrote in message . .. Ed Huntress writes: The endmills also will be noticeably heavier than HSS. Ed of course means to say, *denser* than HSS, not necessarily heavier. I suspect they'll be both. d8-) -- Ed Huntress |
carbide
On 2008-06-15, Ed Huntress wrote:
wrote in message ... I bought a bunch of endmills from a machine shop going out of business. The seller told me some of them were carbide. I saw some of them that were dull grey instead of shiny steel but they were all magnetic. Is tungsten carbide magnetic? Engineman Tungsten carbide itself isn't, but the cobalt binder is. The endmills also will be noticeably heavier than HSS. Usually you can tell whether they are carbide, just by holding in your hand, that's how much denser they are. Also, carbide can be very mildly magnetic, unlike HSS which is strongly magnetic. Very big difference. Also, carbide can scratch HSS, but not vise versa. Carbide and steel may look alike, esp. if they are coated with something like TiN. -- Due to extreme spam originating from Google Groups, and their inattention to spammers, I and many others block all articles originating from Google Groups. If you want your postings to be seen by more readers you will need to find a different means of posting on Usenet. http://improve-usenet.org/ |
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