T.O. 1-1A-9
TABLE 2-19. FUSION WELDING CHARACTERISTICS OF NICKEL-CHROMIUM-IRON AND NICKEL ALLOYS (CONT'D)
ALLOY/DESIGN
RECOMMENDED
FILLER MATERIAL/SPEC
HEAT TREATMENT
REMARKS
TYPE
STRUCTURE
TYPE
ELECTRODE
ROD
PREHEAT
POSTHEAT
MATERIAL
TREAT
phere of 2 parts
helium to 1 part
argon. This re-
duces the current
input which should
be held as low as
possible. The use
of the tab reduces
heat input which
should be held as
low as possible to
minimize the heat
affected zone.
Following the torch
with a water spray
reduces the hard--
ness and produces
maximum ductility
in the weld and
weld affected zones
If possible solution
heat treatment
should follow weld-
ing. When solution
heating high stress
welds, heating and
cooling rates th-
rough the aging
range (1200°-1600°
F) should be high.
Hastelloy "W"
filler material can
be used when join-
ing t he alloy with
it self or other age
hardenable nickel-
base alloys.
2-104
