BS ISO 4992-1:2020,Steel castings – Ultrasonic testing – Part1:Steel castings for general purposes.
BS ISO 4992-1:2020 specifies the requirements for the ultrasonic testing of steel castings (with ferritic structure) for general purposes, and the methods for determining internal discontinuities by the pulseecho technique.
BS ISO 4992-1:2020 applies to the ultrasonic testing of steel castings which have usually received a grainrefining heat treatment and which have wall thicknesses up to and including 600 mm.For greater wall thicknesses, special agreements apply with respect to the test procedure and the acceptance levels.
This document does not apply to austenitic steels and to joint welds.
This second edition cancels and replaces the first edition (ISO 4992-1: 2006),which has been technically revised. The main changes compared to the previous edition are as follows:
—New definition added for “rim zone”(3.6 ) and”non-measurable dimension (3.8)；
—New subclause 4.3.1;
—Figure2 was redrawn;
—Subtitles added to Figures 2, 3, 4 and Figures in Annexes A and B
Figure A1 Key 8 was corrected;
—Table in Figure A 1 numbered as Table A 1.
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