since 6013 having higher hydrogen level say >15 to 30ml, when this is used in multilayer weld(higher thick), lot hydrogen will get into weldmetal till haz, in later it will be subjected to HICC. so low hydrogen electrode are better compared with 6010,6013 etc.
THANKS & BEST REGARDS,
KG.PANDITHAN, IWE, AWS-CWI, CSWIP 3.1,
CONSULTANT-WELDING & QUALITY
Mobile no: +919940739349
On Wed, May 25, 2016 at 11:10 PM, Varun Ur <urvarun@gmail.com> wrote:
Dear amit
6013 can be used for higher thickness for structural weld but was D1.1 calls for pre heat for thickness above 20 MM , if you are using low hydrogen coated electrode you can skip this pre heat requirement up to certain thickness.
Also you get higher deposition rate for 7018.
And of course you can get good radiographic quality weld with 6013 also.
So weigh your pros and cons based on application limitations.Cheers
Varun----Dear ExpertIt has been observed that practically that E6013 electrode generally used for low thickness material i.e less than 20mm thickness however E7018 become mandatory for high thickness on the same material in structural work.
Kindly give your opinion refer to standard.RegardsAmit Vishwakarma
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