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ASTM A503/A503M-15
- Standard Specification for Ultrasonic Examination of Forged Crankshafts
- standard by ASTM International, 05/01/2015
- Publisher: ASTM
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1.1 This is an acceptance specification for the ultrasonic inspection of forged steel crankshafts having main bearing journals or crankpins 4 in. [100 mm] or larger in diameter.