GB/T 42160-2022
Grain boundary diffusion neodymium iron boron permanent magnet materials (English Version)

Standard No.

GB/T 42160-2022

Language

Chinese, Available in English version

Release Date

2022

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 42160-2022

Scope

This document specifies the classification and designation, technical requirements, test methods, inspection rules, packaging, marking, transportation, storage and accompanying documents of grain boundary diffused NdFeB permanent magnet materials. This document is applicable to sintered NdFeB permanent magnet materials treated by grain boundary diffusion process.

GB/T 42160-2022 Referenced Document

• GB 39176 Rare earth products packing, marking, transport and storage
• GB/T 13560 Sintered neodymium iron boron permanent magnets
• GB/T 22315-2008 Metallic materials.Determination of modulus of elasticity and Poisson's ratio
• GB/T 22588 Determination of thermal diffusivity or thermal conductivity by the flash method
• 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 31967.2 Test method for physical property of rare earth permanent magnetic materials.Part 2:Determination of bending strength and fracture toughness
• GB/T 3217 Permanent magnet(magnetically hard)materials.Methods of measurement of magnetic properties
• GB/T 34491 Coatings for sintered neodymium iron boron permanent magnets
• GB/T 38437 Methods of measurement of the magnetic dipole moment of a ferromagnetic material specimen by the withdrawal or rotation method
• GB/T 3850 Impermeable sintered metal materials and hardmetals.Determination of density
• GB/T 40792 Test method of weight loss of sintered neodymium iron boron permanent magnets
• GB/T 40793 Nonmetallic coatings for sintered neodymium iron boron permanent magnets
• GB/T 40794 Measurement method of irreversible magnetic flux loss due to high temperature of rare earth permanent magnet
• GB/T 4339 Test methods for thermal expansion characteristic parameters of metallic materials
• GB/T 5167 Sintered metal materials and hardmetals—Determination of electrical resistivity
• GB/T 7314 Metallic materials—Compression test method at room temperature
• GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
• GB/T 9097 Sintered metal materials, excluding hardmetals.Determination of apparent hardness and mincrohardness
• GB/T 9637 Electrotechnical terminology Magnetic materials and components
• NB/SH/T 0632 Standard test method for determining specific heat capacity by differential scanning calorimetry

GB/T 42160-2022 history

• 2022 GB/T 42160-2022 Grain boundary diffusion neodymium iron boron permanent magnet materials