If the material is based on ASTM specification, there is no major requirement for NACE MR 0103, except for hardness while 0175 would have some more stringent requirements for each material that we should not ignore with environmental limit. I would recommend you to check the hardness requirement of NACE MR 0103.

Lee Sihyoung,
Certified user of NAVE MR 0175 -CS
Certified user of NAVE MR 0175 -CRA


Lee SiHyoung,

So which level of service severity did you specify for MR 0175?
There is no such thing as global conformance, the purchaser must specify which level of service he is after.

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P.E. Metallurgy, Plymouth Tube

MR0175 is not a certification document, i.e. it isn't possible to certify compliance. It is a question of the purchaser having knowledge of the exposure environment, reviewing the inspection data, and determining compliance. So, having NACE MR0175 on the inspection document is worthless anyway. MR0103 is a little more straightforward to get on the inspection document, if it had been requested. Why not simply get a copy of MR0103, look at the requirements, review the inspection data and determine compliance for yourself?

Steve Jones
Corrosion Management Consultant

www.linkedin.com/in/drstevejones

All answers are personal opinions only and are in no way connected with any employer.

Just a FYI. If you become a member of NACE, the documents are free. Membership is less than 2 documents.