参数
31A Density:32± 7kg/m3 Compressive Strength:0.4MPa Tensile Strength:1.0MPa Tensile Modulus:36MPa Elongation at Break:3% Shear Strength:0.4MPa Shear Modulus:1.3MPa Coefficient of Thermal Expansion:3.7 1/K*10E-5