Steel Sheet Squareness Tolerance

Squareness is achieved by trimming the sides and or ends.

Steel sheet squareness tolerance. Tolerances to bs en 10259 for cold rolled wide stainless steel strip thickness tolerance. A square sheet has perfect 90 angles in each of the four corners. 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. Tolerances for sheets and plates cut from coil thickness.

In addition to achieving a certain length and width tolerance shearing is used to make a sheet square. The table below gives the basic tolerances for a category a steel. Out of squareness is defined in fig 2 below. Width governs the tolerances both width and thickness for rectangle bars.

The tolerances quoted are effective at the time of. Hot rolled plate floorplate sheet and strip rolled on a hot strip mill thickness tolerances as nzs 1365 1996. Option 1 the out of squareness of sheets plates and cut lengths shall not exceed 0 5 of the width of the product. Flatness tolerances tolerances for flatness vary with the nominal thickness of the product.

To check the squareness of a sheet without measuring the angles measurements divided by two. 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. Tolerances in a convenient form to users of bluescope steel products. 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.

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. Category c 30. Squareness tolerances technical resources perforated metal standards the length and width of a sheet may measure correctly but sometimes the sheet is not square. The standard then states that these basic tolerances are increased by a based on the category.

Tolerances for xlerplate lite steel. Category b 15. 0 125 to 0 3125 excl 0 002 stainless steel. Of course this approach gives rise to rounding errors.

Details are provided in as nzs1365 and shown over the page.