These consumables are designed for welding
316/316H austenitic stainless steels operating at high
temperatures (500-800°C) under long term creep
conditions.
The consumables can also be used for welding 321/321H
and 347/347H grades in high temperature structural
service. This is particularly important in thick
highly restrained weldments, since the possibility of
premature service failure by intergranular HAZ cracking
is reduced by using more ductile weld metal rather
than 347H.
Used for welding **steam piping, superheater headers,
furnace parts, some gas and steam engine turbine
components**, in the petro-chemical industry, in fossil
and nuclear fueled power stations. Preheat not required, maximum interpass
temperature 250°C. PWHT not required.
Alloy type
High carbon 316 austenitic stainless steels.
Microstructure
Austenite with delta ferrite typically controlled in
the range 2-8FN.
Materials to be welded
For 316/316H materials used at elevated temperatures. EN W.Nr.: 1.4408 (X5CrNiMo 17-12-2). ASTM: 316, 316H,
CF10M. UNS: S31609.
