Consumeables Catalog - Lincoln Electric

APPENDIX
AWS Classification System
Stick (SMAW)
Mild & Low Alloy Steel per AWS A5.1/A5.1M: 2004 and AWS A5.5/A5.5M: 2006
EXXXX
EXXXXM
EXXXX-1 HZ R
AWS A5.1
EXXXX-XX HZ R
AWS A5.5
Additional Classifications
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Classification Designators per AWS A5.1 & A5.5
Designates an electrode.
Designates the minimum tensile strength in ksi of the weld metal when
produced with the test assembly preparation procedure of
this specification.
Designates the welding position in which electrodes are usable, the type of
coating, and the polarity to operate.
Military requirements such as: greater toughness, lower moisture content
and mandatory diffusible hydrogen limits for weld metal.
Designates that the electrode meets the requirements of the absorbed
moisture test.
Diffusible hydrogen designator (H4, H8, H16) in mL of diffusible hydrogen
per 100 grams of weld metal.
Designates that the electrode meets the requirements for improved
toughness – ductility.
Classification Designators per AWS A5.5 Only
Designates the chemical composition of the undiluted weld metal
produced by the electrode using shielded metal arc welding.
Stainless Steel - Per AWS A5.4
EXXX-15 The three digits that follow the “E” indicate the American Iron and Steel Institute type of stainless steel.
The last two digits indicate the current and the welding position in which it is used:
-15 fast freezing slag for out-of-position welding
-16 stable arc and out-of-position welding capability
-17 smooth arc transfer in the flat and horizontal welding positions.