Welding wire MOST W4SI1 x 1000 FI 2.4 /5kg/ 1161280247

Welding wire MOST W4SI1 – reliability and weld strength

Welding wire MOST W4SI1 with a diameter of 2.4 mm is a high-quality consumable material designed for welding low-carbon and low-alloy steels using the TIG method. Its chemical composition, enriched with silicon and manganese, ensures not only high weld strength but also increased resistance to contamination of the surfaces of welded elements. This is crucial in situations where ideal surface preparation is difficult or time-consuming.

Application and properties

This wire is used in a wide range of welding works – from metal structures to repairs. Welding with this wire requires the use of argon (Ar) shielding gas and direct current with the negative pole directed to the electrode. This allows for obtaining clean and precise welds. The ability to weld in all positions (except vertical down) increases its versatility and facilitates work in various conditions.

• Higher strength: The addition of silicon and manganese increases the strength of the weld, which is particularly important in elements exposed to high loads.
• Resistance to contamination: The chemical composition of the wire allows welding even on surfaces with a lower degree of cleanliness.
• Versatility: The ability to weld in most positions ensures convenience and adaptation to different projects.
• Mechanical parameters: Welds made with this wire are characterized by high parameters: yield strength Re = 530 N/mm², tensile strength Rm = 595 N/mm², elongation A5 = 26% and impact energy KV = 70 J at -30°C. These values guarantee the durability and reliability of the connections.
• Precise chemical composition: The carbon (C) content is 0.1%, silicon (Si) 1.0%, and manganese (Mn) 1.7%. The exact chemical composition ensures repeatability of welding results and compliance with standards.

Classification and compliance with standards

Welding wire MOST W4SI1 meets the requirements of the PN-EN ISO 1636-A standard and is classified as W 46 3W4Si1. This ensures its quality and compliance with European safety and technical standards.