Rotek - Drahtelektrode CuSi3 2.1461 0,8 mm 5 kg

• For arc soldering of galvanized thin sheets
• For welding copper and copper-zinc alloys
• Wire diameter: 0.8 mm
• 5 kg D200/S200 spool (dimensions see image)

Features:

• Wire electrode for MIG or TIG welding.
• High temperature and corrosion resistance.
• Main application is the arc soldering of electrolytically or fire-galvanized thin sheets.
• Also used for joining welding of copper, copper-silicon, copper-zinc alloys, and steel-copper, as well as for overlay welding on steel.

Special notes for TIG:

• Preheating of the base material is usually not required.
• Keep the weld pool not too wide.
• For overlay welding on iron materials, introduce as much filler material into the arc as possible.

Special notes for MIG:

• Preheat thick workpieces to 250 °C.
• Keep the weld pool not too wide.
• For the first layer of overlay welding on iron materials, impulse arc welding is recommended.

Main application areas:

• Arc soldering of electrolytically or fire-galvanized thin sheets
• Copper, low-alloy copper, and copper-zinc alloys (CuZn5, CuZn10, CuZn15, CuSi2Mn, CuSi3Mn).
• Overlay welding on un/alloyed steels and cast iron.

Physical properties (approximate values):

• Electrical conductivity at 20 °C: 3-4 S/m/mm²
• Thermal conductivity at 20 °C: 35 W/(m·K)
• Linear thermal expansion coefficient 20-300 °C: 18·10(-6) 1/K

Mechanical properties of the weld metal:

• 0.2 % yield strength: 120 N/mm²
• Tensile strength: 350 N/mm²
• Elongation at break: 40 %
• Charpy impact energy: 60 J
• Brinell hardness HB10/1000: 80

Chemical analysis of the pure weld metal in %:

• Cu: Base
• Si: 3 %
• Mn: 1 %
• Sn: 0.1 %
• Fe: 0.07 %
• Zn: 0.1 %
• Al: <0.01 %

Shielding gas and welding data:

• TIG polarity: =-
• Recommended shielding gas for TIG (flow rate): Argon (7-10 l/min); Argon/He (7-10 l/min)
• MIG polarity: =+
• Recommended shielding gas for MIG: Argon; Argon + 2.5 % CO2.