Announcement

Collapse
No announcement yet.

Steel Plate : Rounded Factory Edge

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • MMW
    replied
    Here is the mill edge of a 1/2in plate I bought and the sheared edge. A typical 48in wide x 96in long sheet would have the milled edge 96in and the seared edge 48in. First pic milled, second pic sheared. This is not the only way it comes but one example. As it is being rolled out. 48in wide it gets sheared to length, typically 96/120 or 144 long.
    Click image for larger version  Name:	20210320_114804.jpg Views:	1 Size:	1.30 MB ID:	614140
    Click image for larger version  Name:	20210320_114827.jpg Views:	1 Size:	1.09 MB ID:	614141
    Last edited by MMW; 03-20-2021, 10:01 AM.

    Leave a comment:


  • MAC702
    replied
    Originally posted by AlexCaffe View Post
    ...I often buy metal from different people and I need to know its composition...
    If you NEED to know, then you need to buy only from a trusted source that is reliable at telling you what it is.

    It also depends on why you need to know. If you are making rifle targets, you can take a sample and shoot it. From experience, you'll know how AR400, AR500, or common A36 will react.
    Last edited by MAC702; 03-12-2021, 07:04 AM.

    Leave a comment:


  • tarry99
    replied
    Ask them for test reports on what there selling.........and if they can't supply them go to a different supplier..........otherwise what your buying is just scrap remnants.

    Leave a comment:


  • AlexCaffe
    replied
    I weighed the pros and cons and decided to buy a new portable analyzer. This thing will be very useful to me both at home and at work. I supply metal, sometimes I take metal for the forge, and so on. A portable analyzer speeds up the analysis of metal by grade, sometimes it turned out that the metals were confused with each other and it took time to figure out what and where. I liked my old model of the portable analyzer, but I accidentally broke it. I went to https://elvatech.com/applications/pmi/ and bought a newer and better model from the same company.
    Last edited by AlexCaffe; 03-17-2021, 12:27 PM.

    Leave a comment:


  • AlexCaffe
    replied
    You are experienced people, please tell me how, apart from a portable analyzer, to determine the steel grade? I often buy metal from different people and I need to know its composition. Tell me there is some other option?
    Last edited by AlexCaffe; 03-12-2021, 12:34 AM.

    Leave a comment:


  • tarry99
    replied
    Originally posted by aametalmaster View Post
    The rounded edge is the factory. Most sheets are cut from bigger sheets so the square edge is the recut edge.
    Well I'm sure factory rounded edge plate exists somewhere.........but of all I've ever seen , handled and hauled when the Western US still had plate mills from US Steel in Provo , to Kaiser Fontana & Bethlehem and many in between I've never seen a rounded factory edge........"Not to say it doesn't exist"..but I've only seen square either via the manufacturing process or final gas burning.....these plates well vary in size from 96"x 240" and up to 480" in length for thickness's 1/2" +/- and down and are also available in 120" widths........3/4" up to 1" can still be had in 96" widths up to 240" length but the weight of each and handling all requires the right equipment...all the heavy plates over 1" are downsized from the above measurements , although anything in quantity can be special ordered. Mills do not cut anything to a finish size only the Service Centers engage in that...Likewise I've also hauled thousands of tons of Import plate off the docks and there standards are much the same... Click image for larger version

Name:	plate1.jpg
Views:	212
Size:	955.0 KB
ID:	613343 Click image for larger version

Name:	plate2.jpg
Views:	176
Size:	1.27 MB
ID:	613344

    Leave a comment:


  • aametalmaster
    replied
    The rounded edge is the factory. Most sheets are cut from bigger sheets so the square edge is the recut edge.

    Leave a comment:


  • tarry99
    replied
    That picture almost gives the impression of two 45's ground and a flat in the middle which could be the prep for welding it together , prior to rolling or forming it.?

    Been inside many rolling mill's all over the West and the only time you see and end unfinished and rounded off would just be the scrap lead or finish end after the rolling process on a large ingot is finished, which would then either be sheared off if it was thin enough......or on heavy plate would be gas burned off on the ends......... the sides of the plate as it comes through the rolling mill hot is constantly mechanically messaged for size on both sides while it travels through the process.

    Leave a comment:


  • Bushytails
    replied
    I'd always assumed the rounded edge was just the result of rolling out the hot plate, and square edges were where it was cut.

    Leave a comment:


  • Bushytails
    replied
    And today's award for "this is why cell phones are not replacements for cameras" goes to...

    Leave a comment:


  • stickermigtigger
    replied

    Leave a comment:


  • tarry99
    replied
    PICTURES would be great...........

    Leave a comment:


  • ryanjones2150
    replied
    As I recall the heavy sheets I’ve purchased have never had square cut ends, more of a curve-ish punched through looking edge.

    Leave a comment:


  • G-ManBart
    replied
    Is the rounding just on the top of the 4' ends? Is it just a slight bit of rounding? If so, that could simply be from the shearing process.

    Leave a comment:


  • MMW
    replied
    Probably came out of the mill 96" wide and then was cut into 48" sheets. Side edges come rounded from the mill to keep a uniform shape. Usually very high carbon content right on the edge. Congrats on the find.

    What material is it, who knows. A sheared edge usually is A36 mild steel. A burned edge can be anything. Is the "squared" edge burned or sheared?
    Last edited by MMW; 01-27-2021, 05:12 AM.

    Leave a comment:

Working...
X