Austenitic stainless steel is relatively healthy. SUS3 16, SUS304 and SUS303 are common among austenitic stainless steels, and SUS440C and SUS4 10 are common among martensitic stainless steels. Although austenitic stainless steel is unfamiliar, 304 stainless steel is very common, so austenitic stainless steel has strong corrosion resistance and will not be corroded by residual chlorine in the outside air and water. It is a healthy stainless steel type.
Matters needing attention
In order to prevent the coating from turning red and the base material from overheating, the welding current should not be too large, and it should generally be about 20% lower than that of welding low carbon steel.
When welding, on the premise of ensuring the penetration, try to use high welding speed and short arc to avoid covered electrode's lateral swing.
When welding, it is not allowed to hit the base metal everywhere. Arc striking plates and arc extinguishing plates should be assembled at both ends of the weld.
In multi-layer welding, the surface residue and moisture should be carefully removed after each welding, and the interlayer temperature should not be too high. Generally, it is required to cool to below 100℃ before the next welding. Welds in contact with corrosive media should be welded last as far as possible.
The above contents refer to Baidu Encyclopedia-Austenitic Stainless Steel.