What is the amount of material required to make a 90° bend in inches?

To determine the amount of material required to make a 90° bend, it's essential to understand the concept of bend allowance, which is used in sheet metal fabrication. Bend allowance accounts for the material that will be stretched or compressed during the bending process.

The formula to calculate the bend allowance for a 90° angle typically involves the thickness of the material and the radius of the bend. A common approach is to use the following equation:

Bend Allowance = (π/2) * (Inside Bend Radius + Material Thickness)

In many cases, the inside bend radius is often set to be equal to the material thickness, which simplifies calculations. For example, if the material thickness is 0.2500 inch, the calculation would yield a bend allowance that corresponds with the value provided.

The amount of material required specifically for a 90° bend in sheet metal usually aligns with the dependent variables of the material's thickness and the chosen bend radius. By conducting the necessary calculations, a value of 0.3436 inch emerges as the most accurate representation of bend allowance for a 90° bend when considering a standard formula and common practices in the industry.

This value, therefore, reflects the length of the material that accounts for the changes in geometry