Filler Metal SIDER 318SI has the same composition of AWS ER316 except for the addition on Nb, that provides resistance to intergranular chromium carbide precipitation and thus increased resistance to intergranular corrosion.
Filler Metal SIDER 318SI was developed to weld austenitic CrNiMo(Ti/Nb) alloyed steels types of the same composition (UNS S31653, AISI 316, 316L, 316Ti, 316Cb), suitable for service temperatures down to -120°C, and resists to intergranular corrosion up to 400°C.
Available in diam.: 2.0, 2.4, 3.3, 4.0 mm; on spools of 25 kgs:
(This item is subject to Industry Alloy Surcharges)
Typical Mechanical Property
Tensile strength: >550 MPa
Yield strength: >390 MPa
Typical Chemical Composition %
C 0.08, Mn 1.80, Si 0.85, Cr 19.0, Ni 12.5, Mo 2.60, Nb 0.60, Cu 0.20