Mick,
The Elga electrode P83Cr is classified as E8018-B2. With carbon (C) spec'd as 0.05-0.10% this would be correct. To be E8018-B2L, the C would be spec'd at less than 0.03 or 0.04%.
The E CrMo1 B42H5 is a classification in accordance with European Norm (EN) ISO3580-A. The P83Cr can have different classifications, but the E8015 would be a different coating (and therefore a different classification) than the E8018. I didn't see a dual AWS classification in the Elga website, only the single AWS and EN ones.
Hope this helps.
Mick,
The WPS / PQR are acceptable to use but there is something strange and I see why your client is a bit concerned.
E CrMo1 B 42 is the EN (European) classification for E 8018 B2
8018 is Low Hydrogen, Potassium, Iron Powder flux type recommended for use with AC / DCEP
8015 is Low Hydrogen, Sodium flux type recommended for use with DCEP
Something doesn't add up.
It may simply be a stuff up by the electrode manufacturer.
Regards,
Shane