The impact notch should be perpendicular to the weld; one face of the specimen should be within 1.5 mm of the material surface. What does that mean?
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ASME VIII-1, UG-84 states that when taking a weld impact test specimen, one face of the specimen should be within 1.5 mm of the material surface. How should this be understood? 1.5mm？
Reply to 1# haidianguolu: The impact test specimen should be taken from near the surface of the weld, and the machining allowance on the upper surface of the specimen should be kept within 1.5 mm.
The axis of the impact notch should be perpendicular to the surface of the base material, with the upper surface of the specimen being at a distance of approximately 0.5~1.5 mm from the surface of the base material