This part of GB/T 13465 specifies the sampling and sample processing methods for mechanical performance tests of impermeable graphite materials, as well as the basic requirements for equipment, data processing, and test reports. This part is applicable to the determination of mechanical properties such as tensile strength, compressive strength, flexural strength, impact strength and hydraulic burst strength of impermeable graphite materials (lumps, pipes, castings). Determination of mechanical properties such as tensile strength, compressive strength, flexural strength, and shear strength of adhesive materials.