Steel Sheet Wih High Flatness

Hot rolled steel sheet and plate provides a rougher surface than cold rolled steel and plate.

Steel sheet wih high flatness. Flat bars are generally used as support braces flat bars are generally used as support braces ladder hangers and gate latches. Applications for punched flats include. Common types of bars include. Specifications a 480 and ams 2242 cover many of the stainless steel flat products.

Available in various sizes and materials. Note 2 if the longer dimension is under 36 in. Note 3 for plates with specified minimum yield strengths of 35 ksi 240 mpa or more the permitted variations are increased to 1. The steel will be placed in the press brake where a bend or bow is the top press is lowered just enough to bend the steel beyond the yield point.

It is important to remember that these tolerances apply to the mill produced product where they have specialized equipment to perform flattening operations. The press brake uses a v shaped die to do this to give enough room to bend the steel. Flat punched whole and slotted hole. 1 1 this specification covers the general requirements for steel sheet in coils and cut lengths.

For example 72 inch wide material with a 100 000 psi yield strength can have a crossbow of 2 to 12 in wavy edges and excessive crown. These shape imperfections must be removed to produce a high quality steel sheet that is not only flat but will remain flat during such subsequent manufacturing operations as laser plasma and punch cutting. When galvanized it is also regularly used in applications where corrosion resistance is a necessity. Flatness tolerances for sheet are published only for full size sheets.

914mm of longer lengths in the plane of the plate measured while the plate rests on a flat surface with the concavity of the. Measured while the plate rests on a flat surface with the concavity of the curvature upward. Up thru 3 over 3 allowable difference in length of diagonals inches maximum difference between aa and bb up thru 12 over 12 3 32 x width ft 2 9 64 x width ft 2 5 64 x width ft 2 7 64 x width ft 2 specified thickness in. High strength and highly formable hr steel sheet and plate is also easy to drill form and weld.

If it was a flat surface the steel would just bounce back to the bend. 914 mm the tolerance is not greater than in. 914mm and to any 36 in. Specified width ft.

Shop our warehouse for structural steel get prices check stock. It applies to the following specifications that describe carbon steel structural steel and high strength low alloy steel hsla furnished as hot rolled sheet and cold rolled sheet. Table a2 20 permitted variations in flatness of plate mill plate quarto plate note 1 tolerances in this table apply to any length not necessarily the rolling direction up to 36 in. Squareness tolerances flat sheet and plate specified length ft.