BÖHLER EAS 4 M-UP is a submerged arc (SAW) wire for welding stainless and acid-resistant steels. Typical work covers tanks, process installations, food and chemical industry equipment and structures in contact with water and steam.
Base materials include 1.4401, 1.4404, 1.4435, 1.4436, 1.4571, 1.4580 and 1.4583. Submerged arc welding gives a very high deposition rate on long, repeatable welds.
- Classification EN ISO: S 19 12 3 L
- AWS classification: ER316L
- Shielding: flux matched to the wire, no shielding gas
- Diameters: 2.0 / 2.4 / 3.2 / 4.0 mm
Keep the heat input down and do not hold the joint hot longer than you need to, austenite expands strongly and pulls the structure out of shape. Match the flux to this wire and check how dry it is, drying the flux decides the hydrogen level in the weld. Keep an even flux layer over the arc, too thin a layer exposes the arc and too thick a one spoils the bead shape.
