Does 16MnR belong to materials with a tendency for delayed cracking?
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Is 16MnR a material prone to delayed cracking? Since the specifications state that for materials with such a tendency, the non-destructive testing timing should be postponed by 24 hours, we have not followed this practice for the non-destructive testing of many of our products. Should we do so? How do you do it?
Generally speaking, 16MnR does not belong to materials prone to delayed cracking, but a specific analysis is still required in certain special environmental conditions
When 16MnR is subjected to non-destructive testing and similar procedures, it is not considered as a material prone to delayed cracking; the mention of such a tendency is likely only intended to serve as a consideration when analyzing the causes of accidents. Don’t end up in an accident with no way of finding out the cause
16MnR does not exhibit a tendency for delayed cracking. Low-alloy high-strength steels such as Cr, Mo, V, Nb, Ti, etc. have a tendency to develop reheat cracks, and these materials themselves have a tendency to develop delayed cracks. Such as 15CrMo, 12CrMo, BHW35, etc
Delayed cracks: Cracks that occur after a period of time following welding are known as delayed cracks. Delayed cracking is a common defect of cold cracking; it does not occur immediately after welding, but appears several hours, days, or even longer after welding. Some sources state that 16MnR is a material prone to delayed cracking, but after consulting personnel from the equipment manufacturer, they said that 16MnR is not a material prone to delayed cracking. I am confused now and hope someone with more knowledge can offer guidance.
Here, we encountered someone from the boiler inspection department who stated that 16MNR is a material prone to delayed cracking.
In practical applications, 16MnR should indeed be classified as a material prone to delayed cracking