Re: [MW:9613] Expiry period for SMAW consumable-reg

Hi,

There is no code specify the shelf life of electrode, its depends on
the manufacturer recommendation.

I had also faced the problem with Lincoln electrodes certificates, as
they mention in the lot certificates in 1 year. So raised the quarry
in Lincoln Company about the shelf life of electrode; accordingly they
send the warranty/validity certificate (Here I attached the attached
warranty/validity certificates & lot certificates -for your
information)

So when ever you face the shelf life problem with electrode kindly
contact the manufacturer and get the validity confirmation from the
company. its the only record or proof of electrode shelf life and
solution.

Rgs,
Sambath Kumar

On 1/31/11, Ilangkumaran Kumarasamy <ilangkumaran.kumarasamy@borouge.com> wrote:
> Dear Mr Pradip,
>
> Yes your statement is perfectly correct.
>
> Thank you,
> Ilangkumaran
>
> From: materials-welding@googlegroups.com
> [mailto:materials-welding@googlegroups.com] On Behalf Of PREM SHANKARDUTT
> NAUTIYAL
> Sent: Monday, January 31, 2011 1:48 PM
> To: materials-welding@googlegroups.com
> Subject: Re: [MW:9589] Expiry period for SMAW consumable-reg
>
> Hi
>
> Pl. browse the reply already given in earlier thread - MW:4205 :
>
> It's true that boiler or pressure vessel codes or structural welding codes
> do not specify the shelf-life or expiry dates of welding electrodes.
> For example, ASME Nuclear Codes Sec-III, Clause & NB, NC-2440 specifies
> that:- Suitable storage and handling of electrodes, flux, and other welding
> materials shall be maintained. Precautions shall be taken to minimize
> absorption of moisture by fluxes and cored, fabricated, and coated
> electrodes.
>
> The shelf-life of welding electrodes to a great extent depends on electrode
> manufacturer's methods, quality control procedure and how electrodes are
> handled. Depending on the coating type, packing (hermetically sealed or
> not), storing methods and ambient conditions, humidity etc, electrodes may
> last long or less. However as a good practice and based on electrode
> manufacturer's guidelines it may be worth considering:-
>
> * Solid Wires, GTAW/GMAW-No shelf Life.
>
> * Cored Wire -FCAW- No shelf life
>
> * SMAW - The rule should be FIFO (First in First Out). Electrodes where the
> coating shows sign of flaking, cracks etc certainly should be discarded
> without much thoughts. Electrodes not older than 2-3 years but in good
> condition may be used. If required the diffusible hydrogen test could be
> repeated. Electrodes older than 3 years generally should not be used as a
> good engineering rule.
>
> * SAW Fluxes- Shelf life 2-3 years maximum subject to the flux condition and
> amount of fine particles/dust generated and behavior during welding.
> Thanks.
> Pradip Goswami, P.Eng
>
>
>
> Regards
>
> Prem Nautiyal
>
>
>
>
>
> On Mon, 31 Jan 2011 09:48:41 +0530 wrote
>>Dear Experts,
>
> generally what is expiry period for SMAw consumables (Flux coated) dose ASME
> Sec II-C refers regarding this, if so please refer which class.in the
> consumable wraper only manufactured date is given but not the expiry date.
>
>
>
> Thanks & Regards,
>
>
>
> K.Pandiarajan.
>
>
>
>
>
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