- Applications
- Butt and flat fillet welding of buildings, bridges and API Line-pipe. (Longitudinal)
- Characteristics on Usage
-
- - lt procides good bead appearance, better slag removal and high impact value of the weld metal.
lt is relatively lnsenitive to rust and makes better resistance to pockmark and pit.
High impact values in both multi-run and two-run technique.
As the consumption of flux is low, it is very economical.
- Notes on Usage
-
- - Dry the flux at 300~350℃ (572~662℉) for 60 minutes before use.
- - When the flux height is excessive, poor bead appearance may occur.
- - Use welding current and speed as low as possible at the first layer of groove to avoid cracking.
- Typical Welding Conditions
-
Typical Welding Conditions
Th
(mm) |
Dia
(mm) |
Groove Design |
pass
(Run NO.) |
Amp
(A) |
Volt
(V) |
Speed
(cm/min) |
Remarks |
| 25 |
4.0 |
|
1~13 |
570 |
30 |
40 |
AWS
A5.17 |
- Typical Chemical Composition of All-Weld-Metal (%)
-
Typical Chemical Composition of All-Weld-Metal (wt%)
| C |
Si |
Mn |
P |
S |
BM |
Th.(mm) |
| 0.06 |
0.52 |
0.73 |
0.024 |
0.016 |
SS400 |
25 |
- Typical Mechanical Properties of All-Weld-Metal
-
Typical Mechanical Properties of All-Weld-Metal
Y.S
MPa(Ibs/in²) |
T.S
MPa(Ibs/in²) |
EL
(%) |
CVN-lmpact Value J (ft·lbs) |
PWHT |
BM |
Th
(mm) |
| 0℃ |
-18℃ |
| 510(52) |
560(57) |
28.6 |
42 |
- |
As Welded |
SS400 |
25 |