Transcription of MECHANICAL TESTS - Rodacciai
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MECHANICAL TESTS - Rodacciai
TESTM agnitudeSymbolMeasurement unitDescriptionTensile strengthRmMPa (N/mm2)it is the ratio between the maximum applied force and the original cross-sectional area of the specimenUpper yield strengthRsMPa (N/mm2)it is detectable only when the material has the yield phenomenon (it doesn t exist for the cold drawn and the stainless steels)Yield pointRpMPa (N/mm2)it is detectable on cold drawn and stainless steel, in place of R5Rp(0,2)MPa (N/mm2)load corresponding to a no proportional charge equal to a 0,2% of length L0Rp(1,0)MPa (N/mm2)load corresponding to a no proportional charge equal to a 1% of length L0 ElongationA%permanent elongation of length L0, expressed in per cent of length L0A5%permanent elongation for proportional specimens with l
wwwodacciaico CHARPY IMPACT TEST SYMBOL Name Specimen geometry L (mm) (mm) T (mm) H B C R D KV Charpy V 55 10 10 8 45° R0,25 55 10 10 8 0,8 0,25 45 KCU Charpy U 55 10 5 10 R1 55 10 10 5 0,5 1 - IZOD Izod V 10 10 22 2 45° 45° 28 130 min 28 28 8 R 0,258 10 75 (1 notch) 100 (2 notches) 130
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