T/CSBM 0005-2021 Active

Main Technical Content: **Technical Requirements**: - **Product Classification**: - Grade, state, and specifications: The grades, supply states, and specifications of the degradable magnesium alloy hot-extruded rods shall comply with Table 1. - Orders exceeding the specifications in Table 1 shall be resolved through negotiation between the supplier and purchaser and noted in the order form (or contract). - **Marking and Example**: - The product marking shall be in the order of product name, standard number, alloy grade, usage code, and specifications (diameter and length). - Example 1: - EK30 grade rod with a diameter of 6.00 mm and a fixed length of 400.00 m: - Marking: - T/CSBM-FEK30-Φ6×400 - Example 2: - ZE21B grade rod with a diameter of 6.00 mm and a fixed length of 400.00 m: - Marking: - T/CSBM-ZE21B-Φ6×400 - **Chemical Composition**: - The chemical composition shall comply with Table 2. - **Dimensional Tolerances**: - (1) Diameter and length: The allowable deviations for the diameter and length of the degradable magnesium alloy hot-extruded rods shall comply with Table 3. - (2) Straightness: The straightness of the degradable magnesium alloy hot-extruded rods shall not exceed 0.3 mm/m over the entire length in the longitudinal direction. - (3) Appearance quality: The surface of the degradable magnesium alloy hot-extruded rods shall be clean, free from cracks, and oxide inclusions. - Other unspecified requirements shall comply with GB/T 5155. - **Other Requirements**: - Other requirements shall comply with ISO 7773. - **Room Temperature Mechanical Properties**: - The room temperature mechanical properties of the degradable magnesium alloy hot-extruded rods shall comply with Table 4. - **Corrosion Degradation Rate and Degradation Mode**: - The corrosion degradation rate and degradation mode of the degradable magnesium alloy hot-extruded rods shall