Consumeables Catalog - Lincoln Electric

ERXXX-X HZ
R EXXX-X HZ
APPENDIX
AWS Classification System
MIG (GMAW), TIG (GTAW) & Metal-Cored (GMAW-C)
Mild & Low Alloy Steel per AWS A5.18 /A5.18M: 2005 and AWS A5.28/A5.28M: 2005
Classification Designators per AWS A5.18 & A5.28
Designates an electrode (E) or rod (ER).
Designates the minimum tensile strength in ksi of the weld metal when
produced with the test assembly preparation procedure of this specification.
Indicates whether the filler metal is solid (S) or composite (C).
Indicates the chemical composition of a solid electrode or the chemical
composition of the weld metal produced by a composite electrode. The
use of the “GS” suffix designates filler metals intended for single pass
applications only.
Diffusible hydrogen designator (H4, H8, H16) in mL of diffusible hydrogen
per 100 grams of weld metal.
Additional Classifications
Aluminum – Per AWS A5.10/A5.10M
ERXXXX The first digit following “E” or “ER” indicates the principle alloying element or elements
(4 – Silicon, 5 – Magnesium). If the second digit following “E” or “ER” is different from zero, it
denotes a modification to the original alloy. The last two digits are used to identify the specific alloy.
Stainless – Per AWS A5.9/A5.9M
ERXXXLSi The three digits following “E” or “ER” specify the chemical composition of the filler metal with a
series of numbers. In some cases, chemical symbols for the letter L (low carbon), Si (high silicon),
or H (high carbon) will follow to designate modifications of basic alloy types.
Nickel Alloy – Per AWS A5.14/A5.14M
ERXXXX-X The chemical symbol “Ni” appears in the designations immediately after “E” or “ER” to identify
the filler metal as a nickel-based alloy. Other symbols such as Cr and Mo in the designation are
intended to group the filler metals according to their principal alloying elements. The number at
the end of the designation separates one composition from another within a group.
WELDING CONSUMABLES CATALOG ı 373