铁、不锈钢、铝的折弯系数表料厚0.60.811.21.41.51.622.32.52.933.244.5688.511.21.51.62槽宽46648886812121616121616R1/V16R1/V25R1/V25R1/V32R1/V60R1/V60铁料（SPCC/SECC）折弯系数45°90°135°R1=1.2/R0.2=1.00.351.60.250.61.80.41.950.752.2/2.02.40.92.52.552.653.4/3.33.844.5/4.24.64.655.26.77.39.714.2515.2热镀锌板1.82.553.35V12V163.8（R3）5.3（R3）6.4（R3）7.9（R3）V25铜板V32V60不锈钢90°40°铝料（AL）折弯系数90°R1=1.2/R0.2=1.01.82/1.92.3135°1.852.252.750.60.750.250.50.53.553.1/3.1514.21.54.75/4.81.55覆铝锌板1.752.22.452.83.35234568101515.48.19.1（R4）12.5（R3）16.222.423.6
