Home / Standards / GB/T 46602-2025 GB/T 46602-2025 Active Vitreous and porcelain enamels—Determination of surface scratch hardness according to the Mohs scale 搪瓷制品和瓷釉 莫氏硬度法测定表面耐刻划硬度 Standard Type GBT ICS 25.220.50 CCS Y 26 Status 现行 Issue Date 2025-10-31 Implementation 2026-05-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A