4from cymsim import Material, Thermal 6STEEL = Material(200e9, 0.3, 7850) 7STEEL_LOSSY = Material(200e9, 0.3, 7850, 3e-4, Thermal(12e-6, 460, 50)) 8BRONZE = Material(110e9, 0.34, 8800, 2e-4, Thermal(18e-6, 370, 40)) 13 return np.random.default_rng(7)