Filler Metal SIDER 309LMo is designed for welding stainless steels to other types of steel, for dissimilar welds between Cr, Cr-Ni and Cr-Ni-Mo stainless steels and mild steels or low alloys steels, and for depositing buffer layers when welding acid resisting clad steels.
The wire offers a high safety against hot cracking even in the case of high dilution.
Suitable for service temperatures of -60 deg C to 300 deg C.
SIDER 309LMo joins stainless Types 304L, 316L and 410 to mild or low alloy steels. This wire also welds hardenable steels and provides a buffer layer prior to hard surfacing.
Dissimilar joint welds: mild steels and low-alloyed structural and Quenched-tempered (QT) steels, among themselves or among each other; unalloyed as well as low alloyed boiler or structural steels with stainless Cr, Cr-Ni and Cr-Ni-Mo steels; ferritic-austenitic joint welds in boiler and pressure vessel parts.
Weld Surfacing: for the first layer of corrosion resistant surfacing on P235GH, P265GH, S255N, P295GH, S355N - S500N; for the first layer of corrosion resistant weld surfacing on high temperature quenched and tempered fine grained steels.
Available in diam.: 2.4-3.2 mm; on spools of 25 kgs:
(This item is subject to Industry Alloy Surcharges)
Tensile strength: 550 MPa min
Yield strength: 450 MPa min.
Elongation: 25% min
Impact test :
KV 20 deg C: 47 J
KV -60 deg C: 32 J
Typical Chemical Analysis %
C 0.03, Si 0.45, Mn 1.80, Cr 24.0, Ni 13.0, Mo 2.50