PMI Help

Materials Science, Metallurgy, Welding, NDTs, Reliability Assessment, Failure Analysis, etc.
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sakib321
Posts: 64
Joined: 02 Aug 2010, 04:06
Area of interest: Metallurgy Engineering

PMI Help

Post by sakib321 »

we have X-Met 5100 for PMI
i need one help regarding to identification of low alloy steel

that is it possible to check the
c-Mo (PI) & Cr- Mo(P11 & P22) via it if yes then how(other than by checking composition of Mo and Cr in it)??
Sakib Jalal
ashfaqanwer
Site Admin
Posts: 443
Joined: 16 Mar 2010, 03:36

Re: PMI Help

Post by ashfaqanwer »

Composition of Cr & Mo check is enough and the only main difference.
Ashfaq Anwer
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qaisarabbas
Core Member
Posts: 134
Joined: 23 Mar 2010, 15:21
Area of interest: Metallurgy Engineering

Re: PMI Help

Post by qaisarabbas »

Sakib,

I would second ashfaq in answering your query. You must notice that there is no significant difference in % carbon of these materials, therefore it would be of no much significance if you would have a better PMI equipment capable of detecting even carbon. The only differentiating elements are Cr & Mo. So you have to trust your PMI results in this reference. You should also compare your PMI results with those mentioned in MTC

Moreover, hardness check can also be looked into if specified by the governing standard.

Regards - Qaisar
Q. Abbas
arcpro
Posts: 356
Joined: 16 Apr 2010, 18:46
Area of interest: Manufacturing Engineering

Re: PMI Help

Post by arcpro »

Piping must have been procured with original MTCs also. Check the chemical composition with PMI and if OK, keep the original MTCs and PMI report in your records and accept the pipes.
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