Matweld Welding Rods Low Hydro 2.5mm M013

The Matweld Low Hydrogen Welding Rods 2.5mm (M013) are high-performance electrodes specifically designed for critical structural welds where high strength and resistance to cracking are required. These are often referred to in the trade as "L.H." (Low Hydrogen) or 7018 style rods, making them the preferred choice for welding thick sections, high-sulfur steels, or restrained joints.

Key Performance Features

• Crack Resistance: The low hydrogen coating minimizes the amount of hydrogen introduced into the weld pool, significantly reducing the risk of "under-bead" cracking and porosity.
• Superior Mechanical Properties: Produces a high-quality, ductile weld deposit that can withstand significant stress and impact, even in cold temperatures.
• Specialized Steel Applications: Ideal for alloy steels, high-carbon steels, and steels prone to porosity.
• Clean Arc Stability: Provides a smooth, stable arc with easily removable slag, resulting in a professional, clean finish.

Technical Specifications

• Product Code: M013 / MAN0330
• AWS Classification: E7018 (Standard for Low Hydrogen)
• Diameter: 2.5mm
• Packaging: Typically sold in a handy 8-piece prepac (approx. 100g) for small repairs, or in bulk 5kg cartons for industrial use.
• Current Type: DC+ (Direct Current Electrode Positive) is recommended for best results.

Pro Tips for Success

• Storage is Critical: Low hydrogen rods are hygroscopic (they absorb moisture from the air). For critical welds, these rods should be kept in a Dry Rod Oven or a sealed, airtight container. If they become damp, they must be "rebaked" according to the manufacturer's specs to restore their low-hydrogen properties.
• Short Arc Length: To prevent porosity, maintain a very short arc length when using E7018 rods.
• Clean the Surface: While these rods are robust, ensuring the base metal is free of oil, rust, and moisture will yield the best structural results.