# bend allowance

## Summary

Bend allowance is the length of the neutral axis of a bent part 1 2 3 and is calculated as BA = angle × (radius + K-factor × thickness). 1 2 3 The K-factor or stretch factor of the material 1 2 3 and the angle 1 2 3 can be in radians or degrees, depending on the formula. The bend allowance is the amount of metal to be added to the total layout 4 and is equal to the difference between the unfolded length (L) and the sum of the flange lengths (L1 and L2). 5

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## Summaries from the best pages on the web

Summary The Bend Allowance is defined as the material you will add to the actual leg lengths of the part in order to develop a flat pattern. The leg lengths are the part of the flange which is outside of the bend radius. In our example below a part with flange lengths of 2” and 3” with an inside radius of .
Bend Allowance – SheetMetal.Me sheetmetal.me

Summary The bend allowance describes the length of the neutral axis between the bend lines, or in other words, the arc length of the bend. Therefore, the bend allowance added to the flange lengths is equal to the total flat length.
Bend Allowance Calculator - CustomPart.Net custompartnet.com

Calculating Bend Allowance, Bend Deduction, and K-Factor 90 Degrees Bend Angle. Figure 2 illustrates the sheet that is bent with the bend angle of 90 degrees. We will start by...
Calculating Bend Allowance, Bend Deduction, and K-Factor - The Javelin Blog javelin-tech.com

Summary It is known that the sum of L1 and L2 is greater than the unfolded length (L), and the difference between the two is known as the bending allowance (K). Hence, the unfolded length of a bend can be calculated as L = L1 + L2 – K.
Bend Allowance Formula: Calculator & Charts for Steel, Aluminum and ... machinemfg.com

To calculate this bend allowance, following formula can be used: This formula takes into account the different geometries of the part you are forming and its properties. The most important…
What is bend allowance? - goodfabs goodfabs.com

To calculate bend allowance: Obtain the properties of the bend (bend radius, angle, and method used). Obtain the characteristics of your material (thickness and K-factor for this specific bend). Input…
Bend Allowance Calculator omnicalculator.com

The Bend Allowance (BA) is the arc length of bending measured along the neutral axis of the metal plate since the length of the neutral axis does not change after…
What Are the K Factor, Bend Allowance, and Bend Deduction?  