Home / Standards / GB/T 46774-2025 GB/T 46774-2025 Upcoming Metallic materials—Test method of dynamic fracture toughness at high strain rates 金属材料 高应变速率动态断裂韧度试验方法 Standard Type GBT ICS 77.040.10 CCS H22 Status 即将实施 Issue Date 2025-12-02 Implementation 2026-07-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A