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ATOM ARC 7018-B2L

Atom Arc 7018-B2L is an all-position low hydrogen electrode with an extra low carbon analysis and a 1% Cr - 0.5% Mo weld metal analysis for reduced cracking. These are excellent for power piping, boiler work, castings and forgings.

Features

Atom Arc 7018-B2L is a 1 1/4 Cr - 1/2 Mo electrode with sensitivity extra low carbon content. The low carbon content in the weld metal is beneficial in reducing cracking of weldments. Atom Arc 7018-B2L is carefully engineered to produce a stable arc and good slag release when welding low-alloy steels in the categories of 0.5% Cr - 0.5% Mo, 1% Cr - 0.5% Mo, 1.25% Cr - 0.5% Mo steels. Most grades of these steels are used in power piping, boiler work, castings and forgings

Atom Arc 7018-B2L
  • Industry
  • Pipeline
  • Power Generation
  • Process
  • Welding Process
  • SMAW (Stick)

Classifications

  • Classifications/Approvals

    • SFA/AWS A5.5; E7018-B2LH4R

Properties

Typical Properties
Stress Relieved 1 hr. @ 1275ºF (691ºC)  
Yield Strength 74 ksi, 510 MPa
Tensile Strength 88 ksi, 607 MPa
Elongation in 2" 29 % %
Typical Undiluted Weld Metal Analysis  
C 0.03 %
Mn 0.7 %
Si 0.4 %
P 0.015 %
S 0.016 %
Cr 1.2 %
Mo 0.6 %

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