Home / Standards / GB/T 33820-2025 GB/T 33820-2025 Active Metallic materials—Ductility testing—High speed compression test for porous and cellular metals 金属材料 延性试验 多孔状和蜂窝状金属高速压缩试验方法 Standard Type GBT ICS 77.040.10 CCS H22 Status 现行 Issue Date 2025-06-30 Implementation 2026-01-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A