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Issues regarding over-inspection of steel plates

2010-09-09View Original

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Why does the tolerance specification only require ultrasonic testing for carbon steel and low-alloy steel that meet the specified criteria? Why not perform ultrasonic testing on stainless steel as well?
Reply #22010-09-09
The stainless steel has coarse grains, resulting in slow reflection at the grain boundaries; the echoes are chaotic, making it difficult to detect defects.
Reply #32010-09-10
Ultrasonic testing of austenitic steel plates, nickel and nickel alloy plates, as well as duplex stainless steel plates can also refer to JB/T4730.3-2005

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Translated at 2026-07-27 01:43:23

Original: https://bbs.hcbbs.com/thread-729804-1-1.html

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