Difficulty Of Bending Stock By Grade

[Martin Gaisser]

Hey guys I just ordered a bunch of bending stock from a metal supply shop and was wondering if you guys could help me in finding out where these fall in difficulty.

Steel

1215 Cold Finished

1018 Cold Finished

Stressproof Cold Finished

1045 Turned, Ground & Polished

Stainless

440C

304

316

Thanks,

Martin

[mightyjoe]

Be CAREFUL with that "stressproof cold" it will snap

and could potentially cut or stab yourself. It's very

tough to bend.

[tselegala]

When comparing one material to another engineers often use this site (at least we do at my present company):

http://www.matweb.com/

and by selecting the appropriate material you get this:

http://www.matweb.com/search/DataSheet.aspx?MatGUID=3a9cc570fbb24d119f08db22a53e2421

what you do is compare the (Tensile Strength, Yield)value of your different stock. just remember to compare the same cross section areas (or diameters if round stock) if they are not the same you need to factor...but this is a really good way to compare materials...this site has data on almost all materials.

for example, a quick search showed that 1018 has a 370Mpa yield and 1045 has a 405Mpa yield, so for the same length and diameter a piece of 1045 will be roughly 9.5% harder to bend...it gives you a good idea of what to expect short of actual calibration.

Edited June 12, 2010 by alexis

[jpmmkrahling]

Very tough to tell because every pc of steel varies. I have calibrated stainless that was easier then CRs and they were both 5/16". Any of those pcs can vary by over 100 lbs.

Just figure it out yourself by bending a pcs from each length. it is not worth getting upset thinking one is supposed to be easier then another. Bend it if you can, if you can't try another type and come back to the first type.

Make sure you keep track of what is what too, otherwise it can be frustrating, have fun

[Tim71]

The turned ground an polished should be easier than 1045 cold rolled. Doesn't have the drawing that adds strength.

Tim