©
COPYRIGHT 2000 THE ESAB GROUP, INC. LESSON
V 5.12.4.3
The weld metal properties are similar
for each of the three coating types: lime, AC- DC
and AC-DC Plus. 5.13 ARCALOY
COVERED ELECTRODE PROPERTIES AND
APPLICATIONS 5.13.1
Arcaloy
308L (AWS
E308/308L-15
& -16),
Arcaloy 308L
Plus (AWS
E308/308L-
17)
- This extra low carbon composition is intended to weld
Type 304L steels to prevent car- bide
participation. It can also be used to weld Types 321 and 347 steels. Typical
chemical composition
of weld metal is: Carbon
0.03% Chromium
19.1% Nickel
9.7% Manganese
1.6% Silicon
0.4% Ferrite
No. 8
5.13.2
Arcaloy
309L (AWS
E309L-15
& -16),
Arcaloy 309L
Plus (AWS
E309/309L-17)
- The low carbon content of Arcaloy
309 L weld metal makes it useful to weld low carbon overlay
on carbon or low alloy steel to control carbide precipitation in the overlay.
The chemi- cal
composition of the weld metal is the same as that of Arcaloy 309 except that the
carbon content
is 0.04% and the typical ferrite no. is 8. 5.13.3
Arcaloy
309 Cb
(AWS 309Cb-15
& -16)
- The addition of columbium to Type 309
weld metal improves its high temperature
performance. It is also useful in welding Types 321
and 347 clad steels. The weld
metal composition is the same as Type 309, except that 0.80%
columbium is added and the ferrite
no. is 8. (-15)
(-16) (-17)
LIME AC-DC
PLUS CONVEX
FLAT CONCAVE
MODERATE RIPPLE
LOW RIPPLE MININUM
RIPPLE WELD BEAD
SHAPE ARCALOY COATED ELECTRODES FIGURE
15
