Home / Standards / GB/T 40809-2021 GB/T 40809-2021 Active Casting aluminum alloys—Process specification for semisolid rheo-diecasting forming 铸造铝合金 半固态流变压铸成形工艺规范 Standard Type GBT ICS 77.120.10 CCS J31 Status 现行 Issue Date 2021-10-11 Implementation 2022-05-01 Responsible Dept 国家标准委 Drafting Unit N/A