Steel Sheet Squareness Tolerance

Out of square tolerances for all sizes the cut lengths shall be such that xlerplate steel conforming to the ordered nominal dimensions can be obtained.

Steel sheet squareness tolerance.

Flatness tolerance thickness width length maximum deviation in in in from a horizontal inches inches inches flat surface in inches 3 16 48 96 1 8 3 16 48 96 1 4 3 16 48. Width governs the tolerances both width and thickness for rectangle bars. In addition to achieving a certain length and width tolerance shearing is used to make a sheet square. 0 125 to 0 3125 excl 0 002 stainless steel.

Tolerances for sheets and plates cut from coil thickness. A square sheet has perfect 90 angles in each of the four corners. Out of squareness is defined in fig 2 below. Sheets specified to stretcher leveled standard of flatness exclusive of 1 4 2 3 4 and full hard tem pers of 200 and 300 series grades.

To check the squareness of a sheet without measuring the angles measurements divided by two. The table below gives the basic tolerances for a category a steel. Checked for by measuring the distance between diagonally opposing corners the amount a sheet is out of square is determined by taking 1 2 the difference of the measurements. Hot rolled plate floorplate sheet and strip rolled on a hot strip mill thickness tolerances as nzs 1365 1996.

Category d 40. Tolerances in a convenient form to users of bluescope steel products. If the bar is 1 5 thick x 3 5 wide the width tolerance of 0 006 will be the tolerance for the thickness as well which is 0 006. Option 1 the out of squareness of sheets plates and cut lengths shall not exceed 0 5 of the width of the product.

Category c 30. The tolerances quoted are effective at the time of. Category b 15. Of course this approach gives rise to rounding errors.

Squareness is achieved by trimming the sides and or ends. Details are provided in as nzs1365 and shown over the page. Tolerances for xlerplate lite steel. The standard then states that these basic tolerances are increased by a based on the category.

Out of square tolerance as nzs 1365 1996 and as 1548 1995 for all sizes the cut lengths shall be such.