Dear Experts,
Refer to the below ASME specification identical to ASTM std. which is to be follow up for SA333 Gr. 6 Pipe. The trace element will be present in the material. Need the expert advice for the Trace element limit or acceptance criteria.
SPECIFICATION FOR TEST METHODS, PRACTICES, AND TERMINOLOGY FOR CHEMICAL ANALYSIS OF STEEL PRODUCTS
SA-751
7. Unspecified Elements (Note 4)
7.1 Reporting analyses of unspecified elements is permitted.
NOTE 4 — All commercial metals contain small amounts of various elements in addition to those which are specified. It is neither practical nor necessary to specify limits for every unspecified element that might be present, despite the fact that the presence of many of these elements is often routinely determined by the producer.
Please refer to the below ASME Sec. VIII Div. 1 UG.10
(a) Chemical analyses are made on different pieces from the lot to establish a mean analysis that is to be accepted as representative of the lot. The pieces chosen for analysis shall be selected at random from the lot. The number of pieces selected shall be at least 10% of the number of pieces in the lot, but not less than three. For lots of three pieces or less, each piece shall be analyzed. Each individual analysis for an element shall conform to the limits for product analysis in the permitted specification, and the mean for each element shall conform to the heat analysis limits of that specification. Analyses need only be made for those elements required by the permitted specification. However, consideration should be given to making analyses for elements not specified in the specification but that would be deleterious if present in excessive amounts.
Thanks & Regards,
Mohd. Azam
Doha-Qatar
On Sun, Mar 31, 2013 at 7:34 AM, kannayeram gnanapandithan <kgpandithan@gmail.com> wrote:
Not allowed as per SA333 /5.2 for gr 1,6,10
> Email-pgoswami@sympatico.ca <blocked::mailto:Email-pgoswami@sympatico.ca> ,
On 3/31/13, pgoswami <pgoswami@quickclic.net> wrote:
> Dear Azam,
>
> I missed your email in the first place. Strictly as per Clause 5.2 of SA
> 333-2010 specification addition of these alloying elements are not
> permitted. However some of the alloying elements may come from the scrap
> used for steel melting.
>
> What's the quantity involved? and what're the design requirements ?
>
> A re-check of chemistry by OES spectroscopy would be advisable. If the
> results of OES conforms to the results of manufacture's "MTR", then
> material is to be discarded.
>
> If the OES results do not pick up any of the alloying elements as
> indicated
> below, then it would be projects' discretion (i.e Client. EPC contractor
> and fabricator joint acceptance).
>
> However talk to the mill in parallel and see if replacement is available ,
> without jeopardizing manufacturing schedule.
>
>
> Pradip Goswami,P.Eng.IWE
>
> Welding & Metallurgical Specialist
>
> Ontario, Canada.
>
>
> pgoswami@quickclic.net <blocked::mailto:pgoswami@quickclic.net>
>
> 5.2 When Grades 1, 6, or 10 are ordered under this specification (SA 333),
> supplying an alloy grade that specifically requires the addition of any
> element other than those listed for the ordered grade in Table 1 is not
> permitted. However, the addition of elements required for the deoxidation
> of
> the steel is permitted
>
>
> _____
>> From: materials-welding@googlegroups.com
> [mailto:materials-welding@googlegroups.com] On Behalf Of
> george.dilintas@gr.bureauveritas.com
> Sent: Saturday, March 30, 2013 9:05 AM
> To: materials-welding
> Subject: Re: [MW:17256] Re: ASME SA 333 Gr. 6 Chemical composition
>
>
> Sorry
> But which of the additional elements is used for deoxidazation?
> Usually for deoxidazation Al or Ca is used
> Best regards
> Dr Georgios Dilintas
> Authorized Nuclear Inspector
> Authorized Inspector Supervisor
> HBS Regional Technical Manager
>
>
> _____
>> From: sajeed zaheer [sajeed7674@gmail.com]
> Sent: 03/30/2013 11:08 AM ZE4
> To: "materials-welding@googlegroups.com"
> <materials-welding@googlegroups.com>
> Subject: Re: [MW:17254] Re: ASME SA 333 Gr. 6 Chemical composition
>
>
>
> Dear Azam,
> as per sec 8 div 1 partA pg.550 para 5 chemical composition,
>
> THE ADDITION OF ELEMENT REQUIRED FOR THE DEOXIDATION OF THE STEEL IS
> PERMITTED. AND YOU CAN ACCEPT THE ABOVE MENTION MTC AS PER THIS PARAGRAPH.
>
>
> On Wed, Mar 27, 2013 at 1:53 PM, Azam Mohd <azam1976@gmail.com> wrote:
>
>
> Dear All Experts,
>
> Please provide your feedback for below query with some technical
> justification or code reference.
>
>
>
> Thanks & Regards,
>
> Mohd. Azam
>
>
>
>
> On Tue, Mar 19, 2013 at 5:09 PM, Azam Mohd <azam1976@gmail.com> wrote:
>
>
> Dear Experts,
>
> ASME Section II Part A Edition 2010
>
> ASME SA 333/SA 333M
>
>
>
> The Pipe material is ASME SA 333 Gr.6, as per clause 5.2 and Table-1 the
> allowable chemical element is C, Mn, P, S, Si only
>
> As per material MTC chemical element is C (0.17%), Mn (093%), P (0.010), S
> (0.0010), Si (0.24), Cu(0.050%), Cr (0.12%), Ni (0.060%), Mo(0.020%),
> V(less
> than 0.004%).
>
>
>
> Our query is weather above chemical element (MTC) can be accepted for ASME
> SA333 Gr.6.
>
>
>
> Looking forward to see the comment from Mr.Pradip Goswami on above matter.
>
>
>
> Thanks & Regards,
>
> Mohd. Azam
>
> Doha-Qatar
>
>
>
> On Wed, Mar 13, 2013 at 3:35 PM, Azam Mohd <azam1976@gmail.com> wrote:
>
>
> Dear Experts,
>
> The below material chemical composition for ASME SA 333 Gr. 6 as per MTC
>
>
>
>
>
>
>> But as per ASME SA 333 Gr.6, Allowable chemical element C, Mn, P, S, Si> <mailto:materials-welding%2Bunsubscribe@googlegroups.com>
> only. Please refer ASME Section II Part A Edition 2010 clause 5.2.
>
>
>
> Need your comment weather this chemical composition can be accepted. Please
> provide the technical clarification or code reference.
>
>
>
> Thanks & Regards,
>
> Mohd. Azam
>
>
>
>
>
>
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