35 Typical
Charpy V-Notch Impact Properties Stress
Relieved 8 hrs.
As Welded @1150°F
(621°C) Testing
Temp. ft.-lbs.
(J) ft.-lbs. (J)
-20°F (-29°C)
168 (228)
193 (262)
Typical Undiluted Weld Metal Analysis
(%) C
Mn Si
P S
0.045 1.10
0.40 0.015
0.014 Preheat:
Preheat is generally not required with
Atom Arc 7018 to prevent underbead cracking. Preheat should be
used with hardenable steels to prevent
the formation of hard heat-affected zones and eliminate tendencies
toward quench cracking on cooling.
Preheat may also be required in welding heavy sections. Standard
Diameters 3/32"
(2.4 mm), 1/8" (3.2 mm), 5/32" (4.0 mm), 3/16" (4.8 mm), 7/32" (5.6 mm), 1/4"
(6.4 mm) Packaged
in Tear Strip Cans Recommended
Welding Parameters page 80
