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COATED ELECTRODES

Guide to Approvals

This page shows the grading which the electrode has under its relevant classification society approvals. The full grading code consists of a digit and one or more letters. The digit indicates the tensil and notch toughness grade (see table). Letters indicate higher tensile steels.

Approvals may be carried out by the following classifications societies: American Bureau of Shipping (ABS)

Bureau Veritas (BV)

Det Norske Veritas (DNV) Germanisher Lloyd (GL) Lloyds Register of Shipping (LR)

Lettering Code:

Y

= approved for higher tensile steels. H or H15 = hydrogen level in weld metal of <10 ml H2/100g or <15 ml H2/100g. HH or H10 = hydrogen level in weld metal of <5 ml H2/100g or <10 ml H2/100g.

H5

= hydrogen level in weld metal of <5 ml H2/100g.

Hydrogen diffusion equipment through vacuum extraction or carrier gas extraction is used to determine the level of hydrogen in weld deposit.

3.01

Grade Tensile properties

Yield strength

MPa

(min) 1 2 3 2Y 3Y 4Y 2Y40 3Y40 3Y42 3Y46 4Y40 4Y42 4Y46 5Y40 5Y42 5Y46

305 305 305 375 375 375 400 400 420 460 400 420 460 400 420 460

Impact properties

Tensile strength MPa

Elongation %

min. 47 J at °C

400-560 400-560 400-560 460-660 460-660 460-660 510-690 510-690 520 550 510-690 520 550 510-690 520 550

22 22 22 22 22 22 22 22 20 19 22 20 19 22 20 19

+20 +/-0 -20 +/-0 -20 -40 +/-0 -20 -20 -20 -40 -40 -40 -60 -60 -60

Note: ABS deviates slightly on yield and tensile strength limits for grades 2Y and 3Y and also on impact test values in all grades. 142