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ATOM ARC 9018-CM

Atom Arc 9018-CM is an all-position low hydrogen electrode designed for welding 2.5% Cr - 1% Mo steels commonly used in pressure vessels, heat exchangers and related components.

Features

The principal application of Atom Arc 9018-CM electrodes is for welding 2.5% Cr - 1% Mo steels commonly found in pressure vessels, heat exchangers, pipings and other related components.

Atom Arc 9018-CM
  • Industry
  • Power Generation
  • Process
  • Pipeline
  • Welding Process
  • SMAW (Stick)

Classifications

  • Classifications/Approvals

    • SFA/AWS A5.5; E9018-B3H4R
    • MILITARY-MIL-E-0022200/8; MIL-9018-B3
    • A.B.S.- AWS A5.5; E9018-B3

Properties

Typical Properties
Stress Relieved 1 hr. @ 1275ºF (691ºC)  
Yield Strength 83 ksi, 570 MPa
Tensile Strength 100 ksi, 690 MPa
Elongation in 2" 23 %
Stress Relieved 8 hrs. @ 1275ºF (691ºC)  
Yield Strength 79 ksi, 545 MPa
Tensile Strength 94 ksi, 650 MPa
Elongation in 2" 23 %
Typical Undiluted Weld Metal Analysis  
C 0.07 %
Mn 0.7 %
Si 0.5 %
P 0.019 %
S 0.014 %
Cr 2.25 %
Mo 1.1 %

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

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.