CEMP-E
TI 809-26
1 March 2000
Table C-2. AWS A5.5 Classification System for Low-Alloy Steel Electrodes for SMAW
Table
E XX YY M - X# HZ R
E
Electrode
XX
Minimum tensile strength in units of 1 ksi (7 MPa)
70 = 70 ksi (480 MPa)
80 = 80 ksi (550 MPa)
90 = 90 ksi (620 MPa)
100 = 100 ksi (690 MPa)
110 = 110 ksi (760 MPa)
120 = 120 ksi (830 MPa)
Y
Generally, welding positions permitted for use, but may be additionally limited by
electrode diameter and class
1 = all positions (F, H, V, OH)
2 = F, H-fillets
Y
Type of covering
0 = high cellulose sodium (except E7020)
0 = high iron oxide (E7020)
1 = high cellulose potassium
2 = high titania sodium
3 = high titania potassium
4 = iron powder, titania
5 = low hydrogen sodium
6 = low hydrogen potassium
7 = high iron oxide, iron powder
8 = low hydrogen potassium, iron powder (except EXX18M)
9 = iron oxide titania potassium
M
If present, meets special Military specifications, and covering is low hydrogen, iron
powder
-
X#
Alloy
type
A
carbon-molybdenum steel
B
chromium-molybdenum steel
C
nickel steel
D
manganese-molybdenum steel
G
general low-alloy steel
P
for pipeline use
W
weathering steel
HZ
Optional supplemental diffusible hydrogen designator
H16 = maximum 16 mL / 100 g deposited weld metal
H8 = maximum 8 mL / 100 g deposited weld metal
H4 = maximum 4 mL / 100 g deposited weld metal
(note: EXX18M meets H4 requirements, but the H4 designation is not used)
R
If present, indicates electrode has lower moisture content and meets absorbed
moisture test requirements
C-5
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