- Applications
- Horizontal welding of oil storage tanks, ships, bridges, Pressure vessels, penstocks, boilers and structural steels.
- Charachteristics on Usage
-
- - lnactive, neutral type bonded flux which is appilcable to all kinds of wire. lmpact value of weld metal and crack resistibility are good. Slag detachability in the groove and resistance to porosity are good. Usability in horizontal fillet welding and X-ray performance dre good.
- Notes on Usage
-
- - Dry the flux at 300~350℃ (572~662℉) for 60 minutes before use.
- - Remove rust, scales, oil, paint, water, dirt and slag of tack welds from the groove to obtain sound weld metal.
- - Use welding current and speed as low as possible at the first layer of groove to avoid cracking.
- - Preheat at 50~100℃ (122~212℉) according to base metal and plate thickness. Keep interpass temperature at 100~250℃. (212~482℉)
- 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 |
| 28 |
3.2 |
|
1st |
1 |
450 |
28 |
35 |
Horizontal
ML |
| 2~4 |
500 |
26 |
50 |
| 2st |
5 |
450 |
28 |
35 |
| 6~8 |
500 |
26 |
50 |
- Typical Chemical Composition of All-Weld-Metal (wt%)
-
Typical Chemical Composition of All-Weld-Metal (wt%)
| C |
Si |
Mn |
P |
S |
BM |
Th.
(mm) |
| 0.08 |
0.31 |
1.60 |
0.025 |
0.019 |
SS400 |
25 |
| 0.07 |
0.40 |
1.53 |
0.020 |
0.013 |
SM490 |
28 |
- Typical Mechanical Properties of All-Weld-Metal
-
Typical Mechanical Properties of All-Weld-Metal
Y.S
MPa(kgf/㎟) |
T.S
MPa(kgf/㎟) |
EL
(%) |
CVN-lmpact Value J (ft·lbs) |
BM |
Th.(mm) |
| -20℃ |
-51℃ |
| 510(52) |
570(58) |
31 |
- |
110(11) |
SS400 |
25 |
| - |
540(55) |
- |
60(6) |
- |
SM490 |
28 |