T.O. 1-1A-9
TABLE 2-18. FUSION WELDING CHARACTERISTICS OF CORROSION RESISTING STEEL - GENERAL(CONT’D)
ALLOY/DESIGN
RECOMMENDED
FILLER MATERIAL/SPEC
HEAT TREATMENT
REMARKS
TYPE
STRUCTURE
TYPE
ELECTRODE
ROD
PREHEAT
POSTHEAT
MATERIAL
TREAT
AM350
without filler metal.
(Cont'd)
AM350 or AM355
electrode/wire shall
be used for heavier
gages.
AM355
308
Not required,
Not re-
See remarks
Bar, plate and forg-
309
Alloy is high-
quired
and heat
ings are normally
310
ly resistant
Alloy is
treat data
welded with filler
Remarks
to weld
highly re-
post heat-
metal in all conditions.
cracking.
sistant to
ing not re-
Where joint strength
weld crack-
quired.
is not important any
ing.
austenitic (18-8)
steel filler rod or
electrode may be used.
Welds heat treated to
condition SCT/DA
approaching 100%
efficiency can be ob-
tained with AM355,
filler metal. Fusion
welding of condition
CRT and SCCRT de-
stroys the effect of
cold rolling as well
as heating above 900
F.
2-100
