Estimate the force (in Newton) required for punching a 30mm diameter hole through 4mm thick high brass sheet at room temperature. Material High Brass Alloy G Brass Nickel silver Phosphor Bronze Everdur Hardened brass 33 Hardened brass 34 Hardened brass 35 Heat treatment 600C, Annealed 600C, Annealed "Spring temper Quenched 800 C, aged 1 hour at 500C Quenched 850C. aged 1 hour at 500C Quenched 800C. aged 1 hour at 400C Tensile strength 321 319 461 411 551 620 591 588 Elongation,% Lo=51 mm 56 61 42 67 22 14 21.5 28 Endurance limit 82.7 82.6 96.5 144.7 165.4 96.5 86.1 110