7
ER316LHSi (Arcaloy 316Si/316LSi)
– This wire, due to its lower carbon content, will
be less susceptible to intergranular
corrosion caused by carbide precipitation when used in place of ER316L. Again,
the higher sili- con
level (Si type) will improve the wetting, but may increase crack sensitivity if
dilution of the base material is
extensive. ER347
(Arcaloy 347) – This wire is much less subject to intergranular
corrosion from carbide precipitation, as
tantalum and/or columbium are added to act as stabilizers. It is used for welding
base materials with similar
chemistry and where high temperature strength is required.
