2.2 & 3.1 MTC

[Kumar]

Dear Experts,

Greetings.

Requesting the views on MTCs (EN 10204 ) for electrode ( SFA/AWS A
5.1 E 7018-1 H 4 R, 4.00mm). In fact according to project spec. it
should be 3.1. but the contractor could only provide 3.1 for chemical
& mechanical 2.2 in a single MTC.

Since its a deviation from the spec., how far this will affect the
quality of the product when mechanical according to 2.2 & chemical
according to 3.1? how this could be convinced to the end user.

Your valuable feedbacks are appreciated.

thanking in advance,
Kumar.

[anthony chundal]

Dear Kumar,

If it is E7018-1 & if impact testing is there  then the cert has to be 3.1 which will give you the tested values ,as 2.2 will only give you values as per code.

Thanks & Regards

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[Prakash Gotimukul]

Thats the way industry is giving. There is no problem in quality. Quality depends on the co.Thats why mosy clients give list of brands which are acceptable.

Aleternative is to qualify electrode by taking all weld sample which is very expensive and not worth the effort

Rgds

Prakash Gotimukul

AIS, Consultant ASME/ISO/PED/IBR

 gpraka...@gmail.com.

 Mob:+97152 979 5678

[anthony chundal]

Attached please find the 3.1 cert from air liquide which we purchased recently,please check with them.

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[pgoswami]

Hello Anthony,

 

Please see my notes on the attached MTR (Product Certificate). I do not think there is any issue in reporting of the data as per ASME Sec-II, Pt-C, SFA,5.1.

 

Thanks.

 

 

Pradip Goswami, P.Eng,IWE
Welding & Metallurgical Engineering Specialist ,

Ontario,Canada.
ca.linkedin.com/pub/pradip-goswami/5/985/299

pgos...@quickclic.net

pradip....@gmail.com

 

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[dilintas]

You may say to your client that in the frame of PED for welding consumables 2.2 certificate is acceptable. 

Further more in the frame of BPVC ASME welding consumables are accepted on the basement of marking and no material test report is required 

Sent from my Samsung Galaxy smartphone.

-------- Original message --------

From: Kumar <sk79...@gmail.com>

Date: 21/10/2016 13:30 (GMT+02:00)

To: material...@googlegroups.com

Subject: [MW:25581] 2.2 & 3.1 MTC

Dear Experts,

Greetings.

Requesting the views on MTCs (EN 10204 ) for electrode  ( SFA/AWS A
5.1 E 7018-1 H 4 R, 4.00mm). In fact according to project spec. it
should be 3.1. but the contractor could only provide 3.1 for chemical
& mechanical 2.2 in a single MTC.

Since its a deviation from the spec., how far this will affect the
quality of the product when mechanical according to 2.2 & chemical
according to 3.1? how this could be convinced to the end user.

Your valuable feedbacks are appreciated.

thanking in advance,
Kumar.

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
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[Abhishek Vyas]

Dear Kumar,

All the welding consumable manufacturers follow the same criteria in providing 3.1 MTCs which is in line with the requirements of EN 10204.

Further, if the purchaser asks for certain test results to be included in the 3.1 TC, the same needs to be mentioned in the welding consumable specification (WCS) at the time of making the purchase order. In only such case, the MTC will consists of the actual values for that particular batch which is tested for tests mentioned in the WCS. This is mutually agreed in between the manufacturer and purchaser.

As mentioned by others also, the general practice is to give actual chemical test results in 3.1 TC and typical guaranteed values of mechanical test.

Also, providing the typical values for mechanical does not imply that the product quality is inferior, since it is controlled by the internal quality management system of every consumable manufacturer.

Hope this helps.

Regards,

Abhishek Vyas

voestalpine Bohler Welding India