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Welding electrode shelf life

Welding electrode shelf life

Postby jabir » Tue Jul 02, 2013 7:35 am

We purchased many types of welding electrodes and the manufacturer only mentions the manufacturing date (on the box). Since there is no any detail about expiry date I would like to know how long we can use these electrodes.
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Re: Welding electrode shelf life

Postby Peter Johansson » Wed Jul 03, 2013 11:41 am

The shelf life of welding consumable depends on its type (solid, cored, covered), the ambient conditions (humidity, temperature) and the packing/storing method (hermetically sealed or not) that is implemented. Shelf life of welding consumables is not specified by codes and even though there are manufacturers who states that the as-packed shelf life of their consumables is almost indefinite, it is recommended the maximum as-packed storage time for all the consumables to be 3 years. After this period the product should be carefully checked before use (as a good engineering practice it is suggested that covered products older than 3 years not be used). Especially for the covered products, during the period of their storage, in case that there is any doubt whether they are dry enough, they should be re-dried according to the instructions given by the manufacturer. In this regard you could have a look at a previous topic of this forum:
http://www.weldinguide.com/viewtopic.php?f=2&t=354
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Re: Welding electrode shelf life

Postby Logosweld » Thu Mar 20, 2014 5:49 am

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:-

1. Solid Wires, GTAW/GMAW-No shelf Life.

2. Cored Wire –FCAW- No shelf life

3. 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.

4. SAW Fluxes- Shelf life 2-3 years maximum subject to the flux condition and amount of fine particles/dust generated and behavior during welding
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Re: Welding electrode shelf life

Postby Logosweld » Wed May 28, 2014 2:52 pm

defenitely,the life of welding electrodes depends on their own behaviour and structure either it is cored,covered or something else,so the functionality total depends on the life of the electrode
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Re: Welding electrode shelf life

Postby rufflivin » Sat Nov 21, 2015 9:41 am

Hi, expiry detail is not given by any codes. May be you can check with your electrode manufacturer. Wire consumables (without flux) is not issue for expiry, we can use anytime if we keep in proper storage. In stick electrodes, flux may be loosened (unbonded) due to long storage. In conclusion, I can say that I fully agree with Peter Johansson and Logosweld above.
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Re: Welding electrode shelf life

Postby Villagran » Sun Aug 27, 2017 1:23 pm

Interesting, I thought they would laster longer than 3 years.
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