{ "C24": { "strength": 24.0, "density": 2400.0, "elastic_modulus": 43111.01947298393, "poissons_ratio": 0.18 }, "C30": { "strength": 30.0, "density": 2400.0, "elastic_modulus": 48199.58506045462, "poissons_ratio": 0.18 }, "C35": { "strength": 35.0, "density": 2400.0, "elastic_modulus": 52061.50209127662, "poissons_ratio": 0.18 }, "C40": { "strength": 40.0, "density": 2400.0, "elastic_modulus": 55656.08681896348, "poissons_ratio": 0.18 } }