MIG Stainless Steel Wires LKM-409Nb ER409Nb

▶︎ Characteristics:

LKT/LKM-409Nb is a ferritic stainless steel filler wire suitable to weld 409 or 409Ti base stainless steels. The addition of niobium results in a preferential reaction with carbon, which prevent the chromium from forming carbides. This improves corrosion resistance, increases strength at elevated temperatures and promotes a ferritic microstructure. It is used primarily in the automotive industry for welding catalytic converters and other parts of the exhaust system. For best results, welding must be done in a low heat input procedure and is not recommended for multi-pass applications.

▶︎ Notes on Usage:

1. For TIG process, use DC(-) current , Argon Shield and Tungsten Electrode.
2. For MIG process, use Spray Transfer or Short Circuit Transfer mode.
3. 98%Argon – 2%O2 shielding gas is recommended in MIG process.

▶︎ Classification:

AWS A5.9 ER409Nb

▶︎ Typical chemical composition of weld metal (wt%)

▶︎ Typical mechanical properties of weld metal

▶︎ Sizes and Weight per pack