ASTM A672 Gr. C60, 30" WT 9.53mm EFW Pipes
ASTM A672 Gr. C60, 30" WT 9.53mm EFW Pipes
(OP)
We have received ASTM A672 Gr. C60, 30" WT 9.53mm EFW Pipes and during inspection it is found that yield strength, Elongation(%), Reduction area(%), Charpy impact value and heat treatment details are not mentioned in MTC and heat no. is not stencilled rather it is hand written.
Can we accept this material? And, also please let me know other requirement for MTC.
Regards
Can we accept this material? And, also please let me know other requirement for MTC.
Regards





RE: ASTM A672 Gr. C60, 30" WT 9.53mm EFW Pipes
Aaron Tanzer
www.lehightesting.com
RE: ASTM A672 Gr. C60, 30" WT 9.53mm EFW Pipes
It depends on your PO requirements, but I would not accept it. Second, why did you not request material test reports of the plate, in lieu of a test certificate?
RE: ASTM A672 Gr. C60, 30" WT 9.53mm EFW Pipes
You are right!! Unfortunately we didn't incorporate supplementary requirements for product analysis of plate. Therefore, manufacturer submitted weld metal analysis (tensile only) report alone. I think as per A 672, tensile test result for weld metal is suffice to be mentioned in MTC and hence it can be accepted.
Regarding my second question, please can somebody tell me hand written marking is acceptable for traceability?
RE: ASTM A672 Gr. C60, 30" WT 9.53mm EFW Pipes
Yes.
RE: ASTM A672 Gr. C60, 30" WT 9.53mm EFW Pipes
.
It is your call to accept or reject as a Purchaser based on a tensile test of a seam weld. In today's supplier market, I would not accept the pipe unless I had all required MTR's related to the manufacture of the plate used to form the pipe. ASTM requirements are minimum requirements and a buyer should be aware. In this case, I would pay for the added information just to have piece of mind. If the plate MTR information is unavailable from a traceability standpoint, I would definitely reject it.
RE: ASTM A672 Gr. C60, 30" WT 9.53mm EFW Pipes
Steve Jones
Materials & Corrosion Engineer
http://www.linkedin.com/pub/8/83b/b04
RE: ASTM A672 Gr. C60, 30" WT 9.53mm EFW Pipes
As I understand the specifications, you do not have to tell your supplier to provide the original plate properties as a supplemental requirement. They may have purchased the plate and welded it, but they are obligated to then include the certs they received for the A516 Grade 60 plate.
I do not think the weld tensile test properties would suffice as a properly performed weld can be stronger than the base metal. You additionally need original plate tensile properties.
This is specified in ASTM A672:
"5.1 Materials - The steel plate material shall conform to the requirements of the applicable plate specification for pipe as listed in Table 1"
Aaron Tanzer
www.lehightesting.com
RE: ASTM A672 Gr. C60, 30" WT 9.53mm EFW Pipes
Not by A672 they are not. 'Conform' does not equal 'Please provide documentation'! It requires explicit application of Clause 22 of ASTM A530.
Steve Jones
Materials & Corrosion Engineer
http://www.linkedin.com/pub/8/83b/b04
RE: ASTM A672 Gr. C60, 30" WT 9.53mm EFW Pipes
Aaron Tanzer
www.lehightesting.com
RE: ASTM A672 Gr. C60, 30" WT 9.53mm EFW Pipes
We have requested the manufacturer to provide CMTR for base material plate ASTM A 516 Gr.60.
As I get feedback from the manufacturer, i will keep you updated.
Regards