S119851-045 - Hobart 18AC Stick Electrode E7018 5/32 Inch 5lb Pack

Hobart 18AC E7018 Stick Electrodes: Precision for AC Power Sources

The Hobart 18AC Stick Electrode (S119851-045) represents a significant advancement in Shielded Metal Arc Welding (SMAW) consumables, specifically tailored for operators utilizing AC power sources. While standard E7018 electrodes are industry staples for their high tensile strength and low hydrogen properties, they often present challenges such as arc instability and difficult restriking when used with Alternating Current (AC) utility welders. Hobart has engineered the 18AC series to bridge this gap, providing the structural integrity of an E7018 rod with a flux coating formulation that stabilizes the arc on AC machines, ensuring consistent deposition and weld quality.

This 5/32-inch (4 mm) diameter electrode is packaged in a convenient 5 lb (2 kg) plastic pak, making it an ideal inventory item for maintenance shops, fabrication facilities, and field repair units where large bulk containers are unnecessary. The electrode carries the AWS E7018 H8 classification, indicating a tensile strength of 70,000 psi and a diffusible hydrogen content of less than 8ml per 100g of weld metal. This low hydrogen characteristic is crucial for preventing cracking in medium to high-carbon steels, making the 18AC a versatile choice for critical repairs on diverse base metals.

In addition to its primary design for AC current, the Hobart 18AC is fully compatible with Direct Current Electrode Negative (DCEN) and Direct Current Electrode Positive (DCEP). This multi-polarity capability allows for greater flexibility in shop environments with varied equipment. The electrode excels in all welding positions—flat, horizontal, vertical up, and overhead—providing excellent puddle control. It is particularly noted for its performance in skip and tack welding applications, where its easy restrike capability reduces operator frustration and increases throughput. For industrial MRO (Maintenance, Repair, and Operations) providers, stocking the Hobart 18AC ensures that clients with basic utility welders can achieve professional-grade structural welds without upgrading their power sources.

Key Technical Benefits:

• AC Optimization: Eliminates arc blow and instability common with standard low-hydrogen rods on AC machines.
• Versatile Metallurgy: Suitable for low, medium, and high-carbon steels, covering a wide range of repair scenarios.
• User-Friendly: Designed for easy slag removal and smooth bead appearance, reducing post-weld cleanup time.