Instructions / Assembly

36
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GMAW
TABLE 3 — Mechanical Properties Requirements for AWS A5.18 GMAW Carbon Solid and Composite Steel Electrodes
NOTE: Mechanical properties as determined from an all-weld metal specimen. Single values are minimum levels.
AWS Tensile Strength Yield Strength Elongation Charpy V-Notch, ft-lbs (J)
Classification ksi (MPa) ksi (MPa) (%) @ 0°F (-18°C) @-20°F (-29°C)
ER70S-2 70 (480) 58 (400) 22 Not Required 20 (27)
ER70S-3 70 (480) 58 (400) 22 20 (27) Not Required
ER70S-4 70 (480) 58 (400) 22 Not Required Not Required
ER70S-6 70 (480) 58 (400) 22 Not Required 20 (27)
ER70S-7 70 (480) 58 (400) 22 Not Required 20 (27)
ER70S-G 70 (480) 58 (400) 22 Not Required Not Required
E70C-3X 70 (480)
58 (400)
22
20 (27)
Not Required
E70C-6X 70 (480) 58 (400) 22 Not Required 20 (27)
MECHANICAL PROPERTIES REQUIREMENTS
TABLE 4 — Mechanical Properties Requirements for AWS A5.28 GMAW Low Alloy Solid and Composite Steel Electrodes
NOTE: Mechanical properties as determined from an all-weld metal specimen. Single values are minimum levels.
AWS Tensile Strength Yield Strength Elongation Charpy V-Notch, ft-lbs (J)
Classification ksi (MPa) ksi (MPa) (%) @-20°F (-29°C) @-50°F (-46°C) @-60°F (-51°C)
ER80S-Ni1
80 (550) 68 (470) 24 Not Required 20 (27) Not Required
ER80S-D2 80 (550) 68 (470) 17 20 (27) Not Required Not Required
ER100S-1 100 (690) 88 (610) 16 Not Required Not Required 50 (68)
ER90S-D2 90 (620)
78 (540) 17 20 (27) Not Required Not Required
E90C-G 90 (620) Not Specified Not Specified Not Required Not Required Not Required
E110C-G 110 (760)
Not Specified
Not Specified Not Required Not Required Not Required
MECHANICAL PROPERTIES REQUIREMENTS
A
WS A5.28 GMAW Low Alloy Solid Steel Wires
ER80S-Ni1 (SuperArc
®
LA-75)
T
he ER80S-Ni1 AWS classification is a high silicon, high
manganese low alloy steel GMAW electrode containing 1% nickel.
This wire also contains small levels of chromium, molybdenum,
and vanadium. These elements combine to provide higher
strength levels, higher impact properties, and the 1% nickel
p
rovides corrosion resistance for ASTM A588 weathering steels.
ER80S-Ni1 welds must exhibit a CVN value of 20 ft-lbs @ -50°F
(27J @ -29°C). Lincoln Electric’s premium ER80S-Ni1 GMAW
low alloy electrode is
SuperArc LA-75.
ER80S-D2 (SuperArc
®
LA-90)
An ER80S-D2 GMAW wire electrode is higher silicon, higher
manganese low alloy product containing a 0.50% level of
molybdenum. Molybdenum strengthens the weld metal and
improves toughness. Lincoln Electric’s premium ER80S-D2
product is
SuperArc LA-90 and also satisfies requirements for
classification as an ER90S-D2 and an ER90S-G, providing an
as-welded tensile strength in excess of 90 ksi.
ER100S-1 and ER100S-G (SuperArc
®
LA-100)
As the "G" suffix indicates, the ER100S-G AWS classification of
GMAW wire electrode is used for single and multiple pass
welding, and it is a general classification. There are no AWS
c
hemical compositions or mechanical property requirements.
L
incoln Electric’s
S
uperArc LA-100
p
remium GMAW wire
electrode meets the ER100S-G, ER110S-G, and the Military
Specification MIL-100S-1 classification requirements. This
electrode meets a minimum tensile strength of 100 ksi and
m
inimum yield strengths of 82 ksi. It contains 0.5%
molybdenum and 1-2% nickel, making it an excellent choice
for welding HY-80 and ASTM A514 steels.
AWS A5.28 GMAW-C Low Alloy Composite Electrodes
E
90C-G (Metalshield
®
M
C-900)
E90C-G electrodes are high silicon, high manganese electrodes
well suited to weld over high levels of mill scale on base materials.
The high alloy in this wire is suited to weld on HSLA, HY80,
ASTM A710 and other high strength steels. Expect high
deposition rates with little slag and spatter from these electrodes.
E110C-G (Metalshield
®
MC-1100)
E110C-G electrodes are high silicon, high manganese electrodes
well suited to weld over high levels of mill scale on base materials.
The alloy balance and high strength of these electrodes are
designed to weld on many HSLA steels such as ASTM A514, HY-
100 and “T-1” steels as well as other high alloy steels. High depo-
sition rates with little slag and spatter can be expected.