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7018 Welding Rods - Low Hydrogen

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7018 welding rods are widely regarded as one of the most versatile and dependable electrodes in the welding industry. Known for their smooth arc, minimal spatter, and strong welds, these low-hydrogen rods are essential for professional welders and DIY enthusiasts alike.

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7018 Welding Rods - Basic - Low Hydrogen

Key Features of 7018 welding rods:

  • Low-Hydrogen Electrode: 7018 rods are designed to minimize the hydrogen content in the weld, reducing the risk of cracking.

  • Smooth Bead Appearance: They produce clean, high-quality welds with a smooth finish and minimal slag.
  • Versatile Positioning: Ideal for welding in all positions, including vertical and overhead, making them suitable for complex projects.
  • Excellent Mechanical Properties: 7018 rods offer high tensile strength (around 70,000 psi), making them perfect for welding carbon steel and low-alloy steel.

Applications: 7018 welding rods are commonly used in construction, shipbuilding, pipelines, structural steelwork, and heavy equipment repair. They excel in applications where strength and durability are critical, such as:

  • Structural Steel Fabrication: Ideal for bridges, buildings, and other infrastructure projects.
  • Pipe Welding: Especially in industries like oil and gas, where the integrity of the weld is crucial.
  • Heavy Equipment Repair: From tractors to industrial machinery, 7018 rods ensure reliable, long-lasting repairs.

How to Use 7018 Welding Rods:

  • Polarity: Use DC+ (direct current electrode positive) for the best results.
  • Storage: 7018 rods should be stored in a dry environment and kept in a rod oven to prevent moisture absorption, which could lead to hydrogen embrittlement.
  • Welding Techniques: 7018 rods are ideal for drag or "dragging" techniques, where the rod is moved smoothly across the joint with minimal effort.

Whether you’re working on high-strength structural welds or simple repairs, 7018 welding rods provide the performance, durability, and versatility to get the job done right.

The three primary categories of electrodes—cellulose, rutile, and basic (low-hydrogen)—obtain their name from the coating type. Electrode coatings help optimise performance for various applications by influencing how quickly the slag freezes; penetration (deep, medium, or mild); and deposition rate. The coating also contributes to good arc initiation, easy restrikes, puddle control, and a stable arc with minimal spatter.

Basic. Basic electrodes offer an arc with medium penetration and excellent mechanical properties. The coating is low-hydrogen iron powder, TiO2, CaCO3, and CaF2 (calcium fluoride). The coating is of medium thickness, and the addition of iron powder increases deposition. It freezes relatively fast to enable flat, horizontal, vertical-up, and overhead welding.

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