Low Hydrogen

JACKSUN ULTRA 28

AWS A5.1: E7028
  • Heavy-coated, low hydrogen, iron-powder type electrode.
  • Provides very high deposition efficiency (≈ 160%) for faster welding.
  • Ideal for fillet and flat position welding on heavy structures, tanks, shipbuilding, and fabrication work.
  • Produces welds with excellent mechanical properties and low hydrogen content to resist cracking.
  • Operates only in flat and horizontal fillet positions.
  • Smooth arc, self-releasing slag, and uniform bead appearance.
Technical Data

Product Specifications

1. Typical Chemical Composition

CMnSiSNiCrPMoV
≤ 0.150.40-1.60≤ 0.90≤ 0.0300.300.20≤ 0.0350.300.08

2. Typical Mechanical Properties

PropertyUTS (MPa)Yield Strength (MPa)Elongation (%)Impact Toughness (J @ 0 °C)Diffusible Hydrogen (ml/100 g)
Requirement≥ 490≥ 400≥ 22≥ 27≤ 10
Typical Values520 – 580430 – 50024 – 3050 – 805 – 8

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

Size (mm)Size (inch)Current Range (A)PolarityVoltage (V)Packing (5 kg)Packing (20 kg)
3.21/8110 – 160AC / DC+22 – 24
4.05/32150 – 210AC / DC+24 – 26
5.03/16190 – 260AC / DC+26 – 28
6.01/4230 – 320AC / DC+28 – 30
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