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PA-12018G
AWS A5.5 E12018G
DIN EN 757: 1997: E693Mn2NiMo B 45 H10
I. APPLICATIONS:
PA-12018-G is suitable for heat treatable low alloy steel (such as SCM21/4 chrome-molybdenum steel SNCM8 Ni-Cr-Mo steel). Proper base metal are also including forging cast iron (ASTM A486 Gr. 120/A508 Gr. 5a.4a) pressure vessel steel plate (A543 Gr. B3.C3), etc.
II. DESCRIPTIONS:
PA-12018-G is an iron powder low hydrogen type, 830N/mm2 grade high tensile steel electrodes. The product provide excellent crack resistance, good mechanical properties and smooth bead appearance. It features good arc and easy slag removal.
III. NOTES ON USAGE:E:
-
Dry the electrodes at 350ºC-400ºC for about one hour before use. Store the electrodes at 100-150ºC after drying, keeping them away from moisture.
-
Adopt back step method or strike the arc on a small steel plate prepared for this particular purpose because arc striking on base metal is in danger of initiating cracking.
-
Keep the arc as short as possible.
-
Preheat at 120-180ºC. The temperature to be applied varies in accordance with plate thickness and kind of steel to be welded.
-
Pay attention not to exceed proper heat-input because excessive heat-input causes deterioration of impact values and yield strength of weld metal.
-
Immediate post heating at 150-200ºC after welding is effective to prevent cracking.
IV. TYPICAL CHEMICAL COMPOSITION OF ALL-WELD METAL DEPOSITS (%):
|
C |
Mn |
Si |
P |
S |
Ni |
Cr |
Mo |
V |
|
0.07 |
1.35 |
0.40 |
0.018 |
0.007 |
2.10 |
0.740 |
0.40 |
0.014 |
V. TYPICAL MECHANICAL PROPERTIES OF WELD METAL:
|
Yield Point N/mm2 (ksi) |
Tensile Strength N/mm2 (ksi) |
Elongation % |
Charpy V-notch -50 °C, (J) |
|
840 (121) |
920 (133) |
22 |
50 |
VI. WELDING POSITIONS: ALL POSITIONS
VII. SIZES & RECOMMENDED CURRENT RANGE:
|
SIZES (mm) |
Dia. (mm.) |
2.6 |
3.2 |
4.0 |
5.0 |
|
Length (mm.) |
350 |
350 |
350 |
350 |
|
|
Current Amp. |
F |
55-85 |
90-130 |
135-185 |
190-250 |
|
V, OH |
50-80 |
80-120 |
110-160 |
165-210 |
TEST RESULT
The information contained or otherwise referenced herein is presented only as “typical” without guarantee or warranty, and Industrial Welding Corporation expressly disclaims any liability incurred from any reliance thereon. Typical data and Test results for mechanical properties, deposit or electrode composition and other properties were obtained from a weld produced and tested according to prescribed standards, and should not be assumed to be the expected results in a particular application or weldment. Actual results will vary depending on many factors, including, but not limited to, weld procedure, plate chemistry and temperature, weldment design and fabrication methods. Users are cautioned to confirm by qualification testing, or other appropriate means, the suitability of any welding consumable and procedure before use in the intended application.