Mac Stain E122B
25.9.3.L.B.
Descriptions & Applications:
Designed on a highly alloyed core wire with a high purity chemically basic flux to facilitate all positional welding including on site welding. The microstructure of the as deposited weld contains 30% to 50% delta ferrite – balance austenite which provides excellent resistance to corrosion and erosion. This electrode has a very stable arc, low spatter, easy strike and restrike, good slag detachability and porosity free smooth welds.
Mac Stain E122B is designed to weld the following alloys when no subsequent solution heat treatment is applied to the weldment.
ASTM A182 Grade F51, UNS S31803, DIN 1.4462, BSC Hyresist 22/5, Sandvik SAF 2205, Avesta 2205, Valourec VS22.
Typical All Weld Metal Chemical Analysis:
|
C
|
Mn
|
Si
|
S
|
P
|
Cr
|
Ni
|
Mo
|
N²
|
| 0.02 |
1.0 |
0.4 |
0.01 |
0.011 |
25.0 |
9.0
|
3.5 |
0.18 |
Typical All Weld Metal Mechanical Properties: As Welded
|
Min |
Typical |
|
Ultimate Tensile Strength
|
690 |
760 N/mm²
|
|
0.2% Proof Stress
|
|
630 N/mm²
|
|
Elongation
|
20 |
24%
|
| Reduction of Area |
|
44%
|
|
Impact energy-50°c
|
|
85 Joules |
Current:
AC/DC +
Sizes Available and Recommended Amperages:
|
2.5mm
|
3.2mm
|
4.0mm
|
5.0mm
|
| 45-70 |
70-110 |
110-140 |
140-180 |
Storage:
If allowed to become damp the electrodes should be re-dried for one hour at 250°C before use.  |
|
