Metric Sheet Metal Bend Radius Chart

You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k.

Metric sheet metal bend radius chart.

Sheet metal bend radii if these guidelines are not followed more research and or some form of analysis may be requried. Maybe you are a sheet metal processing factory and now you need to buy a press brake. When the sheet metal is put through the process of bending the metal around the bend is deformed and stretched. Many software packages like solid works inventor and solid edge will let you incorporate a bend deduction chart into its calculations when developing flat patterns.

The following illustration shows the equation calculation for determining the bend allowance when forming sheet metal. Unfortunately sheet metal bending is not always going to be the same in every shop. By using the press brake tonnage calculator we have made for this purpose you only need to enter the sheet metal thickness the bending length and our recommended vee opening width the. Creating a chart with your standard values is a key component of speeding up this process.

Aluminum where necessary 5052 h32 may be bent to 1t and 6061 t6 to 1 1 2t. Bend radii minimum bend sizes. As this happens you gain a small amount of total length in your part. Table 1 preferred recommended 90 degree bend radii for various sheet metals.

Specifing a bend radius from here will help prevent hair line cracks. The tables below show bend radii and minimum bend sizes for materials and tooling combinations stocked by protocase. This page also includes a link to a on line sheet metal bend allowance calculator. The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance.

Most sheet metal materials will conform to the calculations. Open sheet metal bend allowance calculator sheet metal bend allowance equations. The bend radius of a sheet metal design will be based on the wall thickness of the part and the tooling that is available in house. This tool allows you to determine tonnage internal radius v die opening and minimum flange you just have to insert the characteristics of the sheet metal to be bent.

Understanding the bend allowance and consequently the bend deduction of a part is a crucial first step to understanding how sheet metal parts are fabricated. We go beyond the general rules of sheet metal bending as our customers want tight bend radii for sheet metal parts. The second important number when creating sheet metal designs is the bend radius value. It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii.

The tool can calculate the required bending force for bending aluminum stainless steel mild steel and weldox or strenx high strength steels. It is possible to choose other bends if you require but additional lead time and tooling charges may apply. The material thickness will be measured in decimal form not by the gauge number. A section view of a typical punch and die set used to create sheet metal bends.

Sheet metal bend radius.