T/CSBM 0041-2023 Medical high purity magnesium extruded round bars
T/CSBM 0041-2023 Medical high purity magnesium extruded round bars
Basic Information
Scope
Main Technical Content: 5.1 Chemical Composition: The chemical composition of the rod material shall comply with the requirements of ISO Mg99.99, ISO Mg99.995A, ISO Mg99.995B, and ISO Mg99.995C specified in ISO 8287:2021. The chemical composition of other materials shall be agreed upon by the supplier and the buyer and specified in the order form (or contract). 5.2 Dimensional Tolerances: 5.2.1 Diameter Tolerance: The diameter tolerance of the rod material shall comply with the provisions in Table 1. Table 1: Diameter Tolerance of Rod Material 5.2.2 Bending: The bending of the rod material shall comply with the requirements of GB/T 5155. 5.2.3 Chamfer: The ends of the rod material shall be cut square, and the chamfer shall not exceed 3°. 5.3 Room Temperature Tensile Mechanical Properties: The room temperature tensile mechanical properties of the rod material shall comply with the provisions in Table 2. Table 2: Room Temperature Tensile Mechanical Properties of Rod Material 5.4 Low Magnification Microstructure: The low magnification microstructure of the rod material shall not have defects such as cracks, fissures, pores, tailings, or inclusions that disrupt the continuity of the metal. 5.5 Microstructure: The microstructure of the rod material shall be uniform, with an average grain size no coarser than Grade 4 in GB/T 4296-2022. 5.6 Appearance Quality: The surface of the rod material shall be smooth, free from cracks, scratches, wrinkles, or indentations. 5.7 Ultrasonic Testing: The rod material shall undergo ultrasonic testing at the AAA grade level as specified in GB/T 6519-2013. 5.8 In Vitro Degradation Testing: The rod material shall undergo in vitro degradation testing in accordance with specific application requirements. 5.9 Biological Evaluation: The biological evaluation of the rod material shall comply with the provisions of GB/T 16886 (all parts). 6. Test Methods 6.1 Chemical Composition: The chemical compos