## What is Y factor?

The Y-factor represents the constant used in the formula to calculate the unfolded length of a sheet metal part when it is bent with a specific radius and angle in the design.

The Y-factor is determined by the position of the neutral bending line in relation to the thickness of the sheet metal part. This position depends on the type of material used in the part.

The Y-factor has a numerical reference range of 0 to 1. A negative numerical reference for the Y-factor means that the material is softer, with smaller values indicating a softer material.

The length of the neutral bending line is equal to the unfolded length of the sheet metal part.

The Y-factor is calculated by multiplying the K-factor by (Π/2).

The default value for the Y-factor is 0.50.

## Y Factor Calculator

**Further reading:**