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ATOM ARC 9018

Atom Arc 9018 is an all-position low hydrogen electrode designed for use on high-tensile quenched and tempered steels.

Features

Atom Arc 9018 electrodes are used for attachment welds on T-1, HY-80 and HY-90 steels and other high tensile, quenched and tempered steels.

Atom Arc 9018
  • Industry
  • Bridge Construction
  • Shipbuilding
  • Mobile Machinery
  • General Fabrication
  • Rail Road Car
  • Civil Construction
  • Welding Process
  • SMAW (Stick)

Classifications

  • Classifications/Approvals

    • ASME SFA 5.5
    • QPL-22200/1; MIL-9018-M
    • A.B.S.- 3Y
    • L.R.- 3Ym(H15)

Properties

Typical Properties
As Welded  
Yield Strength 84 ksi, 580 MPa
Tensile Strength 95 ksi, 655 MPa
Reduction in Area 69 %
Elongation in 2" 28 %
Stress Relieved 24 hrs. @ 1100ºF (593ºC)  
Yield Strength 68 ksi, 470 MPa
Tensile Strength 92 ksi, 635 MPa
Reduction in Area 72 %
Elongation in 2" 27 %
Typical Charpy V-Notch Impact Properties  
Testing Temperature -60ºF (-51ºC)  
As Welded 60 ft.-lbs., 81 J
Stress Relieved 24 hrs. @ 1100ºF (593ºC) 66 ft.-lbs., 92 J
Typical Undiluted Weld Metal Analysis  
C .043 %
Mn 1.00 %
Si .26 %
P .012 %
S .010 %
Ni 1.60 %
Mo .29 %

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

Preheat should be used on hardenable steels to prevent the formation of a hard heat-affected zone. Preheat may also be required in welding heavy sections.