Consumeables Catalog - Lincoln Electric

APPENDIX
AWS Classification System
Flux-Cored (FCAW)
Mild & Low Alloy Steel per AWS A5.20/A5.20M: 2005 and AWS A5.29/A5.29M: 2005
EXXT-XX-JXHX
374 ı THE LINCOLN ELECTRIC COMPANY
Classification Designators per AWS A5.20 & A5.29
Designates an electrode.
Designates the minimum tensile strength in ksi when multiplied by 10 of the
weld metal when produced with the test assembly preparation procedure of
this specification.
Designates the position in which the electrode is usable: “0” for flat and
horizontal positions only, or “1” for all positions.
Designates the electrode as tubular.
Designates the usability of the electrode with some number from 1 through
14 or the letter “G” (or “GS”). An “S” is used after the “G” to indicate that
the electrode is suitable only for single pass welding.
Designates the type of shielding gas used for classification: “C” indicates
100% CO 2 . “M” indicates 75-80% Argon/balance CO 2 shielding gas. When
no designator appears in this position, it indicates that the electrode being
classified is self-shielded and that no external shielding gas was used.
Optional supplemental diffusible hydrogen designator (H4, H8, H16) in
mL of diffusible hydrogen per 100 grams of weld metal.
The letter “D” or “Q” in this position indicates that the weld metal meets
supplemental mechanical property requirements when welding with low
heat input, fast cooling rate procedures or using high heat input, slow
cooling rate procedures.
The letter “J” in this position designates that the electrode meets the
requirements for improved toughness and will deposit weld metal with
Charpy V-Notch properties on up to 27 J (20 ft•lbs) at -40°C (-40°F).