What is 304 316L welding rod used for?
1.How to distinguish of variousstainless steel welding rods?
A.According to the chemical composition, it can be divided as: chromium stainless steel, chromium nickel stainless steel and chromium manganese nitrogen stainless steel.
B.According to the process, the welding materials are divided into TIG welding wire, MIG welding wire, submerged arc welding materials, welding rod for arc welding, welding strip for strip electrode surfacing, etc.
2. How to choose the suitable stainless steel welding rods ?
If the base metal is the same, the primary principle is "match with the base metal". For example, when welding 310 or 316 stainless steel welding rods, the criterion of matching with the base metal with high alloy element content shall be followed. type 316 welding material is selected.
If you want to match the welding material with the base metal, how to choose the welding material to weld 304 stainless steel? When welding 304 stainless steel, use 308 welding material, because the additional elements in 308 stainless steel can better stabilize the weld area.
Note:(308L is also an acceptable option. L indicates low carbon content, 3xxl stainless steel indicates carbon content ≤ 0.03%, while standard 3xx stainless steel can contain up to 0.08% carbon content.
Since L-type welding materials and non-L-type welding materials belong to the same type of classification, manufacturers should especially consider using L-type welding materials, because its low carbon content can reduce the tendency of intergranular corrosion.L-shaped welding materials will be more widely used.)
3.How to weld stainless steel welding rod and carbon steel rod?
In order to reduce the cost, some structural members will weld a corrosion-resistant layer on the surface of carbon steel. When welding the base metal without alloy element and the base metal containing alloy element, use the welding material with higher alloy content to balance the dilution rate in the weld.
When you welding carbon steel and 304 or 316 stainless steel, as well as other dissimilar stainless steel , 309l welding material is considered in most cases. If higher Cr content is desired, type 312 is selected.
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