whats the difference

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in cold rolled and hot rolled steel?
Reply:The temperature when rolled.Airco Ac/Dc 300 HeliwelderMillerMatic 200 (stolen)Miller Maxstar 150STLMiller AEAD200LE (welding and generating power) Hobart MIG
Reply:Here you go- https://en.wikipedia.org/wiki/Rolling_(metalworking) Airco Ac/Dc 300 HeliwelderMillerMatic 200 (stolen)Miller Maxstar 150STLMiller AEAD200LE (welding and generating power) Hobart MIG
Reply:Cold rolled is usually held to a higher tolerance dimension wise and doesn't have a coating of mill scale that needs to be removed since it's formed to final shape cold rather than hot. It also usually costs more..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:Cold rolled is to 18 year old single malt scotch. Hot rolled is to used bed frames for your next welding project.   Lincoln Power Mig 216Lincoln AC/DC-225/125Miller  625 X-Treme PlasmaMiller 211 Forney 95FI-A 301HF 91110Victor Journeyman O/PMilwaukee DaytonMakita  Baileigh NRA Life Member
Reply:Originally Posted by SuperArcCold rolled is to 18 year old single malt scotch. Hot rolled is to used bed frames for your next welding project.
Reply:Originally Posted by WookieWeldingThats funny the majority of structural steel is hot rolled
Reply:SuperArcCold Rolled  -  Hot Rolled. You are the only one that rolled on this one.Once again: you are in the borrow pit  -  upside down  -  and on fire.Fortunately, the Single Malt was thrown clear!Opus
Reply:SuperArc, I like that!!   Best  Bob
Reply:Cold rolled is clean, hot rolled has mill scale you have to clean off before welding.
Reply:Originally Posted by VPTCold rolled is clean, hot rolled has mill scale you have to clean off before welding.
Reply:Cold rolled also has more internal stresses than hot rolled, due to the work-hardening effect.
Reply:Hot rolledMill scale1$ per pound ishon flat bar - round corners  and bulging sideslarger tolerancesround bar, not that round.Cold rolledNo mill scaleclean bright steelSharp cornerstighter size tolerances$2 a pound ish.Welding ? Hot rolled is usually okI grind the scale off, I want the welds to stick.bolt together ? I use cold rolled often.Last edited by 12345678910; 05-21-2013 at 10:54 PM.
Reply:Hot rolled is when the wife gets out of bed first in the morning and you roll over to her warm spot.Cold rolled is when you get out of bed first and roll over onto a cold floor on your feet.Yeah?Lincoln Power Mig 210MP MIGLincoln Power Mig 350MP - MIG and Push-PullLincoln TIG 300-300Lincoln Hobby-Weld 110v  Thanks JLAMESCK TIG TORCH, gas diffuser, pyrex cupThermal Dynamics Cutmaster 101My brain
Reply:Originally Posted by OPUS FERROSuperArcCold Rolled  -  Hot Rolled. You are the only one that rolled on this one.Once again: you are in the borrow pit  -  upside down  -  and on fire.Fortunately, the Single Malt was thrown clear!Opus
Reply:thanks for replys guys, all info is appericated.
Reply:Ironically, Hot Rolled has better strength properties than Cold Rolled.BillLincoln v155-s with Tig Welder Ready Pack K2606-1One father's love of his autistic son www.inmyimage.com
Reply:What's ironic about it?  What do you mean by "better" strength properties?
Reply:SuperArc  -  No can do . . . .If I 'got back on my meds',  I would have to change my Avatar to Oops Ferrari  -  then everyone would know  -  what you know.Opus