Two packages from SubsTech have been released: Ceramic Matrix Composites and Thermoplastics. They contain properties data sheets on these materials and are released under a Creative Commons Attribution Non-Commercial Share-Alike license. The properties include: density, modulus of elasticity, tensile strength, compressive strength, shear strength, thermal expansion (at 20 °C), thermal conductivity, glass transition temperature, maximum work temperature, electric resistivity and dielectric constant.
SubsTech (Substances & Technologies) is a free and open knowledge source in Materials Engineering. The site contains a wide range of illustrated articles on metals, ceramics, polymers, composites and fluids including fundamentals of materials engineering, materials properties, applications and manufacturing technologies.