15345 - Bohler HL 46-MC Metal Cored Wire 1.4mm (0.052") 16kg Spool

High-Efficiency Seamless Metal-Cored Wire

The Bohler HL 46-MC is a premium copper-coated, seamless metal-cored wire designed for high-performance gas metal arc welding (GMAW). With a diameter of 1.4mm (0.052 inches) and supplied on a 16 kg spool, this wire is engineered to meet the rigorous demands of structural steel fabrication, shipbuilding, and heavy equipment manufacturing. It complies with AWS A5.18 E70C-6M H4 and EN ISO 17632-A standards, offering a reliable solution for unalloyed and fine-grained steels.

One of the defining technical characteristics of the HL 46-MC is its seamless manufacturing process. Unlike folded wires, this tubular wire is hermetically sealed, which provides exceptional resistance to moisture absorption. This results in extremely low diffusible hydrogen content (typically <3 ml/100g), significantly mitigating the risk of hydrogen-induced cracking. The copper coating enhances current transfer and reduces contact tip wear, making it an ideal choice for high-duty cycle applications, including robotic and automated welding cells.

The wire features a metal powder core that allows for higher current densities compared to solid wires. This translates to higher deposition rates and faster travel speeds, improving overall throughput. The slag formation is minimal, often appearing only as small islands of silica that are easily removed, reducing post-weld cleaning time. It operates effectively with mixed gases (Argon + 15-25% CO2) and can also be used with 100% CO2, although mixed gas provides the optimal arc characteristics and mechanical properties.

Technical Specifications:

• Classification: AWS A5.18 E70C-6M H4
• Diameter: 1.4mm (0.052")
• Current Type: DC+ (DCEP)
• Yield Strength: >460 MPa
• Impact Energy: >47 J at -40°C