Chinese Standard: GB/T 31967.2-2015

Test method for physical property of rare earth permanent magnetic materials—Part 2:Determination of bending strength and fracture toughness

全国稀土标准化技术委员会(SAC/TC 229)

本部分规定了稀土永磁材料抗弯强度（σbb）和断裂韧度（KⅠC）的测定方法。

本部分适用于脆性断裂稀土永磁材料的抗弯强度和断裂韧度（KⅠC）的测定。抗弯强度的测定范围：20 MPa~2 000 MPa，断裂韧度（KⅠC）的测定范围：0.5 MPa·m1/2~50 MPa·m1/2。

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