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ATOM ARC 7018-SR

Atom Arc 7018-SR is an E7018 all-position low hydrogen electrode designed to maintain 70 ksi (483 MPa) when used in stress relieving applications.

Features

Atom Arc 7018-SR is an all-position low hydrogen electrode. The moisture resistance and welder appeal is similar to other Atom Arc electrodes. Atom Arc 7018-SR was developed to maintain 70 ksi (483 MPa) tensile strength after 16 hours stress relieving.

Atom Arc 7018-SR
  • Industry
  • Power Generation
  • Civil Construction
  • General Fabrication
  • Mobile Machinery
  • Welding Process
  • SMAW (Stick)

Classifications

  • Classifications/Approvals

    • ASME SFA 5.1

Properties

Typical Properties
As Welded  
Yield Strength 68 ksi, 475 MPa
Tensile Strength 83 ksi, 575 MPa
Elongation in 2" 32 %
Reduction in Area 76 %
Stress Relieved 8 hrs. @ 1150ºF (621ºC)  
Yield Strength 61 ksi, 420 MPa
Tensile Strength 76 ksi, 520 MPa
Reduction in Area 76 %
Elongation in 2" 35 %
Stress Relieved 16 hrs. @ 1150ºF (621ºC)  
Yield Strength 59 ksi, 405 MPa
Tensile Strength 74 ksi, 510 MPa
Reduction in Area 77 %
Elongation in 2" 35 %
Typical Charpy V-Notch Impact Properties  
Testing Temperature -20ºF (-29ºC)  
As Welded 114 ft.-lbs., 195 J
Stress Relieved 8 hrs. @ 1150ºF (621ºC) 133 ft.-lbs., 180 J
Stress Relieved 16 hrs. @ 1150ºF (621ºC) 185 ft.-lbs., 250 J
Typical Undiluted Weld Metal Analysis  
C 0.06 %
Mn 1.3 %
Si 0.3 %
P 0.014 %
S 0.014 %
Mo 0.1 %

SAW

Accessories

Depositions

Deposition Table
Diameter Optimal Amperage Range Amperage Deposition Rate Efficiency
3/32 in, 2.4 mm 90 A 70 - 100 1.7 lbs./hr., 0.8 kg./hr. 66.3 %
1/8 in, 3.2 mm 120 A 90 - 160 2.6 lbs./hr., 1.2 kg./hr. 71.6 %
140 A 90 - 160 2.7 lbs./hr., 1.2 kg./hr. 70.9 %
5/32 in, 4.0 mm 140 A 130 - 220 3.1 lbs./hr., 1.4 kg./hr. 75 %
170 A 130 - 220 3.8 lbs./hr., 1.7 kg./hr. 73.5 %
3/16 in, 4.8 mm 200 A 200 - 300 4.9 lbs./hr., 2.2 kg./hr. 76.4 %
250 A 200 - 300 5.4 lbs./hr., 2.4 kg./hr. 74.6 %
7/32 in, 5.6 mm 250 A 250 - 350 6.5 lbs./hr., 2.9 kg./hr. 75 %
300 A 250 - 350 7.2 lbs./hr., 3.3 kg./hr. 74 %
1/4 in, 6.4 mm 300 A 300 - 400 7.7 lbs./hr., 3.5 kg./hr. 78 %
350 A 300 - 400 8.7 lbs./hr., 3.9 kg./hr. 77 %

Extra Info