Founding. Ultrasonic testing - Spheroidal graphite cast iron castings Ingestion-build-264231 BS EN IEC 61977:2020 includes

BS EN IEC 61977:2020 includes some technical changes with respect to BS EN 61977:2015

a thin layer rich in Ca and P forms on its surface

Detail of grooves to be machined

such that product failures

Founding. Ultrasonic testing - Spheroidal graphite cast iron castings Ingestion-build-264231 BS EN IEC 61977:2020 includes1 Scope This European Standard specifies the requirements for the ultrasonic testing of spheroidal graphite cast iron castings and the techniques for determining internal discontinuities by the pulse echo technique. This European Standard does not apply to ultrasonic testing of the nodularity of spheroidal graphite cast irons. This European Standard does not apply to transmission technique. NOTE The transmission technique has insufficient sensitivity