Re: [MW:33328] WELDING CONSUMABLE EXPIRY DATE

Dear Sujith

 Eletrode self life:

 1. SMAW electrodes shall not used more than 3 years  

2. Solid Wires, GTAW/GMAW/SAW-No shelf Life.  

3. Cored Wire –FCAW- No shelf life

4. SAW Fluxes- Shelf life 2-3 years depends on the flux condition. 

International Welding codes does not specify the expiry dates of welding electrodes.  example, The shelf-life depends on electrode manufacturing methods, quality control followed and how electrodes are handledThe shelf-life depends on the coating type, type of packing, storing conditions and at a temperature, humidity electrodes are stored. Based on all the these  points electrodes manufacturer decides shelf life

However following rules shall be followed about usage

1.      SMAW electrodes should be FIFO

2.       If electrode coating damaged and shows sign of peeling, rusting & cracks those shall be discarded

3.      Some of the manufacturer recommendations Electrodes older than 3years shall not be used or some manufacturer says 5years if electode stores at dry conditions and with proper packing.

some of the code manufacturer specifies Appropriate storage and handling of electrodes/ fluxes, other consumables and how Electrodes shall be shall be maintained, & most of the manufacturer's recommendations and as a good engineering practices electrode can be used 3 years Max. this time period of 3-5 years is arrived by manufacturers based on deterioration of properties due to Moisture absorption by electrodes packing, normal packing will not give required protection against moisture for longer time. Vacuum packed / hermetically sealed packed Electrodes are not affected and electrodes can be stored more time provided the vacuum/seal is not damaged. if Electrodes/ flux, are stored in a dry environment with around RH< 40-50%, deterioration effect can be minimized. So in such situations electrodes can utilized for more than 3years say up to 5years

Thanks & regards,

Srinivas Rao

welding Engineer 

 

On Friday, July 29, 2022 at 9:17:43 AM UTC+4 kannayeram gnanapandithan wrote:

Check with manufacturer

THANKS & BEST REGARDS,

KG.PANDITHAN, BE, IWE,  CSWIP 3.1,

ISO 9712 Level 2 in VT,

ASNT-Level II in PT,MT,RT & UT,

LA ISO 9001-2015,

International Welding Engineer. 

CONSULTANT-WELDING & QUALITY

Mobile no: +919940739349

On Fri, Jul 29, 2022 at 10:20 AM sujit kumar <sujitku...@gmail.com> wrote:

Dear expert,

What are the welding consumable expiry date acceptance criteria.....is there is mention anywhere in the code for the expiry of electrode and filler wire..???

Best regards.

Sujit Kumar

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