Problem
1. Find out the standard gauges of sheet metal for different materials and their corresponding thicknesses. For example, Gauge 10 for Aluminum is 3 mm.
2. Find typical values for K-Factor, bend allowance (BA), and bend deduction (BD) for sheet metal materials.
3. Calculate the flat length of the sheet metal. Use the following parameters: material is aluminum, L1 = L2 = 100 mm, T = 5 mm, R = 10 mm, A = 90°, and the K-Factor for aluminum = 0.485.