Filler metal SIDER 312 is valuable for welding dissimilar joints, especially if one of the base metals is a stainless high in nickel content. The deposit is two-phase, high in ferrite.
Even with considerable dilution with austenite forming elements, such as nickel, the microstructure is two-phase and thus highly resistant to weld metal cracks and fissures.
SIDER 312 is utilized for welding stainless steels to mild steels and for welding high strength steels that are difficult to weld with ferritic electrodes.
This wire also joins stainless steels where high strength or wear resistance is essential. Service temperatures should be below 430°C (800°F) to prevent formation of secondary brittle phases.
Available in diam.: 2 - 2.4 - 3.2 - 4 mm; on spools of 25 kgs:
(This item is subject to Industry Alloy Surcharges)
Typical Mechanical Properties
Tensile strength: 730 MPa (106,000 psi)
Typical Chemical Analysis %
C 0.10, Cr 30.0, Ni 9.20, Mo 0.20, Mn 1.80, Si 0.40, Cu 0.20