Steel Sheet Squareness Tolerance

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.

Steel sheet squareness tolerance.

Category d 40. A square sheet has perfect 90 angles in each of the four corners. Squareness is achieved by trimming the sides and or ends. Tolerances in a convenient form to users of bluescope steel products.

To check the squareness of a sheet without measuring the angles measurements divided by two. Out of squareness is defined in fig 2 below. Out of square tolerance as nzs 1365 1996 and as 1548 1995 for all sizes the cut lengths shall be such. The tolerances quoted are effective at the time of.

In addition to achieving a certain length and width tolerance shearing is used to make a sheet square. 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. 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 to bs en 10259 for cold rolled wide stainless steel strip thickness tolerance.

Squareness tolerances technical resources perforated metal standards the length and width of a sheet may measure correctly but sometimes the sheet is not square. Tolerances for sheets and plates cut from coil thickness. Category b 15. Option 1 the out of squareness of sheets plates and cut lengths shall not exceed 0 5 of the width of the product.

The standard then states that these basic tolerances are increased by a based on the category. 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. The table below gives the basic tolerances for a category a steel. Details are provided in as nzs1365 and shown over the page.

Hot rolled plate floorplate sheet and strip rolled on a hot strip mill thickness tolerances as nzs 1365 1996. 0 125 to 0 3125 excl 0 002 stainless steel. Width governs the tolerances both width and thickness for rectangle bars. Flatness tolerances tolerances for flatness vary with the nominal thickness of the product.

Category c 30.