Home / Standards / GB/T 5028-2025 GB/T 5028-2025 Active Metallic materials—Sheet and strip—Determination of tensile strain hardening exponent(n) 金属材料 薄板和薄带 拉伸应变硬化指数(n值)的测定 Standard Type GBT ICS 77.040.10 CCS H23 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