GB/T 17951-2022 in English
VALIDGeneral technical conditions of hard magnetic materials
- Issued on:2022-03-09
- Implemented on:2022-10-01
- File Format:PDF
- Delivery:Via email within 5 business days
Price(USD)：
$520.00
$505.00
$505.00
《GB/T 17951-2022硬磁材料一般技术条件》由TC228（全国电工合金标准化技术委员会）归口，主管部门为中国电器工业协会。
Introduction
Analysis of the core content of the standard
| Material type | Typical grade | (BH)max(kJ/m³) | HcJ(kA/m) | Main application areas |
|---|---|---|---|---|
| Aluminum nickel cobalt | AlNiCo60/11 | 60 | 1100 | Precision instruments |
| NdFeB342/111 | 342 | 1110 | New energy vehicle motor | |
| Hard ferrite | Hard ferrite35/25 | 35 | 250 | Speaker |
Key Technology Updates
Main changes compared to the 2005 version of the standard:
- Newly added RE FeN bonded magnet grade (U5 category)
- Added high magnetic energy product La/Co to replace ferrite
- Refine the mathematical definition of demagnetization field intensity HD
- The magnetic property test method is synchronized with GB/T3217-2013
Implementation suggestions
Manufacturers should pay special attention to:
- Anisotropic materials must indicate the magnetization direction
- The dimensional tolerance of sintered NdFeB is differentiated by processing method (flat grinding/wire cutting)
- New grades need to re-establish the quality control system
Sample only — not a preview of GB/T 17951-2022
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
