CS Corrosion

By Amr Elsayed Date 02-01-2020 19:39

Dear all
I am asking about posibility of occuring corrosion between two diffrent grades of steel when welding to gether

eg: A106 grB with api 5l gr x52

Thanks in advance for your help. :smile:

By 803056

Date 02-02-2020 00:58

It depends on the environment.

I've seen cases where the HAZ looked like it was removed by a hacksaw, while the weld bead face looked like it was welded the day before yesterday.

Al

By Amr Elsayed Date 02-02-2020 08:33

Thanks for reply AL, i am asking if this is mentioned in any code or specs.

By 803056

Date 02-02-2020 14:47

Most welding standard don't address corrosion. The designer has to take that into consideration using a different reference standard. NACE provided a lot of information with regards to corrosion.

Al