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  • Several Regions have held meetups already, but others are being planned or are evaluating the interest. The Ontario GTA West area meetup is planned for Saturday April 26th at Greasemonkeys shop in Aylmer Ontario. If you are interested and haven’t signed up yet, click here! Arbutus has also explored interest in a Fraser Valley meetup but it seems members either missed his thread or had other plans. Let him know if you are interested in a meetup later in the year by posting here! Slowpoke is trying to pull together an Ottawa area meetup later this summer. No date has been selected yet, so let him know if you are interested here! We are not aware of any other meetups being planned this year. If you are interested in doing something in your area, let everyone know and make it happen! Meetups are a great way to make new machining friends and get hands on help in your area. Don’t be shy, sign up and come, or plan your own meetup!

Determining Steel type….

Hmm, just learned something, thanks "whydontu". Great thing is I understood it! Kinda reminds me of how chicken soup was/used to be made, "we mix it 50/50," 1 chicken, 1 whale. Sometimes it hard to find a big chicken!
 
whydontu said:
Without going down that rabbit hole, heating austenitic 300-series stainless steel will tend to increase its ferrite content, making it magnetic. 400-series ferritic and martensitic stainless steels will normally be magnetic. Think of stainless steel as stew. Not every spoonful of stew has the same ratio of potato, beef, and parsnip. Not every crystal of stainless has the same ratio of iron, chrome, and nickel. Heating stainless will alter the crystal structure, and if the chips are coming off blue then the machining process has exceeded the critical temperature and ferrite will form.
Click to expand...
Thanks for that. I never knew heat could alter an alloy.
 
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