Low Alloy High Tensile

JACKSUN ULTRA 18M

AWS A5.5: E7018 A1
  • Premium low-alloy, high-tensile, iron-powder type electrode designed for structural applications requiring high strength and crack resistance.
  • Suitable for high-strength steels (up to 550–600 MPa) and low-temperature service.
  • Produces smooth, uniform weld beads with excellent slag detachability.
  • Operates on AC and DC+ polarity.
  • Ideal for bridges, heavy structures, pressure vessels, pipelines, and general fabrication.
Technical Data

Product Specifications

1. Typical Chemical Composition

CMnSiSNiCrPMo
≤ 0.12≤0.90≤ 0.80≤ 0.030≤ 0.0350.40-0.65

2. Typical Mechanical Properties

PropertyUTS (MPa)Yield Strength (MPa)Elongation (%)Impact Toughness (J @ 0 °C)
Requirement≥ 550≥ 450≥ 22≥ 47
Typical Values560 – 610470 – 51024 – 2855 – 75

3. Dimension, Current Condition & Packing Data (SMAW Welding)

Size (mm)Size (inch)Current Range (A)PolarityVoltage (V)Packing (5 kg)Packing (20 kg)
2.53/3260 – 100AC / DC+20 – 22
3.21/890 – 140AC / DC+22 – 24
4.05/32130 – 190AC / DC+24 – 26
5.03/16180 – 250AC / DC+26 – 28
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