本SAE推荐规程规定了一种测量摩擦材料和盘式制动片总成挠度的方法，该方法与经典材料压缩应变测试更为一致。该SAE试验方法与SAE J2468的不同之处在于，当测量挠度时，施加在试样上的预载荷和最大载荷。它采用ISO 6310（0.5至8.0 MPa）中使用25 mm直径平柱塞的材料施加应力水平。

This SAE Recommend Practice specifies a method for measuring the deflection of friction materials and disc brake pad assemblies in a manner more consistent with classical material compressive strain testing.This SAE test method differs from SAE J2468 in the preload and maximum load applied to the test sample when deflection is measured. It adopts the material applied stress levels found in ISO 6310 (0.5 to 8.0 MPa) using a 25 mm diameter flat plunger.