Welding wire MOST W4SI1 x 1000 FI 2.0 /5kg/ 1161280207

Welding wire MOST W4SI1 – reliability and strength of connections

Welding wire MOST W4SI1 with a diameter of 2.0 mm is a solid 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 contamination of the surfaces of the welded elements. It will be useful in work requiring certainty and durability.

Application and welding method

Designed for welding low-carbon and low-alloy steels using the TIG (GTAW) method with argon (Ar) shielding gas. Constant polarity is key – negative connected to the electrode. This allows for precise and controlled weld formation. It can be used in almost any position, except for vertical down, where control over the weld pool is difficult.

Mechanical properties and chemical composition

This wire provides welds with high strength parameters: yield strength (Re) is 530 N/mm², and tensile strength (Rm) reaches 595 N/mm². Elongation at break (A5) is 26%, and impact energy (KV) at -30°C is 70 J – which guarantees resistance to cracking at low temperatures. The chemical composition of the wire is: 0.1% carbon (C), 1.0% silicon (Si) and 1.7% manganese (Mn). Such proportions of components ensure optimal welding and mechanical properties of the connection.