Welding wire MOST W4SI1 x 1000 FI 3.2 /5kg/ 1161280327

Welding wire MOST W4SI1 – reliability and strength of connections

Welding wire MOST W4SI1 with a diameter of 3.2 mm is a proven choice for professionals and demanding users. It contains an increased amount of Si-Mn components, which translates to higher weld strength and better resistance to contaminants on the surfaces being welded. It is ideally suited for joining low-carbon and low-alloy steels using the TIG method.

Application and properties

This welding wire is intended for welding using argon (Ar) shielding gas. It is characterized by high strength parameters: the yield strength Re reaches 530 N/mm², and the tensile strength Rm is 595 N/mm². The elongation at break (A5) is 26%, and the impact energy (KV) at -30°C is 70 J, which guarantees reliable connections even in difficult conditions.

Chemical composition and classification

The precise chemical composition of the wire – containing 0.1% carbon, 1.0% silicon and 1.7% manganese – ensures a stable welding process and repeatable results. The product meets the PN-EN ISO 1636-A standard and is classified as W 46 3W4Si1. Welding is carried out with direct current with the negative pole connected to the electrode. It is possible to work in all positions except vertical down.

Thanks to this, the MOST W4SI1 wire is a solid choice for any welder looking for a reliable material for demanding applications.