GB/T 40790-2021
Sintered cerium-based and cerium-rich permanent magnet materials (English Version)
- Standard No.
- GB/T 40790-2021
- Language
- Chinese, Available in English version
- Release Date
- 2021
- Published By
- 国家市场监督管理总局、中国国家标准化管理委员会
- Latest
- GB/T 40790-2021
- Scope
- This document specifies the classification and designation, technical requirements, test methods, inspection rules, packaging, marking, transportation, storage and accompanying documents of sintered cerium and cerium-rich permanent magnet materials. This document applies to sintered cerium and cerium-rich permanent magnets produced by powder metallurgy technology and mainly used in the fields of electronics, electric power, machinery, and medical equipment.
GB/T 40790-2021 Referenced Document
- GB 39176-2020 Rare earth products packing, marking, transport and storage
- GB/T 13560 Sintered neodymium iron boron permanent magnets
- GB/T 24270 Method of measurement of temperature coefficient of magnetic properties of permanent magnetic materials
- GB/T 2828.1-2012 Inspection procedure by count sampling part 1: Lot by lot inspection sampling plan retrieved by acceptance quality limit (AQL)
- GB/T 29628 Guides for methods of measurement of the magnetic properties of permanent (magnetically hard)materials by pulsed field magnetometry
- GB/T 3217 Permanent magnet(magnetically hard)materials.Methods of measurement of magnetic properties
- GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
GB/T 40790-2021 history
- 2021 GB/T 40790-2021 Sintered cerium-based and cerium-rich permanent magnet materials
