440 stainless

Topics include, Machine Tools & Tooling, Precision Measuring, Materials and their Properties, Electrical discussions related to machine tools, setups, fixtures and jigs and other general discussion related to amateur machining.

Moderators: GlennW, Harold_V

Post Reply
Randall Va
Posts: 122
Joined: Sat Feb 20, 2010 9:42 pm

440 stainless

Post by Randall Va »

Happy 4th everone! does anyone know if stainless 440 can be drilled with high speed drill bits?
Thanks
www.chaski.com
Top
User avatar
GlennW
Posts: 7288
Joined: Sun Apr 15, 2007 9:23 am
Location: Florida

Re: 440 stainless

Post by GlennW »

Never had a problem if the speed is right. (440C)
Glenn

Operating machines is perfectly safe......until you forget how dangerous it really is!
Top
Randall Va
Posts: 122
Joined: Sat Feb 20, 2010 9:42 pm

Re: 440 stainless

Post by Randall Va »

Thanks Glen,I need to drill and thread a 5/8 hole
www.chaski.com
Top
User avatar
GlennW
Posts: 7288
Joined: Sun Apr 15, 2007 9:23 am
Location: Florida

Re: 440 stainless

Post by GlennW »

Just run nice ans low and use cutting oil or you'll get a quick lesson in work hardening!
Glenn

Operating machines is perfectly safe......until you forget how dangerous it really is!
Top
Lonnie
Posts: 14
Joined: Sun Apr 10, 2016 6:20 pm
Location: Halstead Kansas

Re: 440 stainless

Post by Lonnie »

300 RPM is what I would do with some kind of coolant.
Lonnie
Top
Glenn Brooks
Posts: 2930
Joined: Mon Nov 10, 2014 1:39 pm
Location: Woodinville, Washington

Re: 440 stainless

Post by Glenn Brooks »

Also, don't let the bit rub the surface, or stall in the hole - it will turn the stainless into urban imperviouso faster than you can blink. Then you'll need a supply of finely ground diamonds to finish the hole.
Moderator - Grand Scale Forum

Motive power : 1902 A.S.Campbell 4-4-0 American - 12 5/8" gauge, 1955 Ottaway 4-4-0 American 12" gauge

Ahaha, Retirement: the good life - drifting endlessly on a Sea of projects....
Top
Post Reply

Return to “General Discussion”