Mac Stain E122
25.9.3.L.R.
Descriptions & Applications:
Designed on a highly alloyed core wire with a high purity lime/rutile flux coating that deposits high chromium duplex weld metal with excellent resistance to corrosion and erosion. The microstructure of the as deposited weld contains 30% to 50% delta ferrite – balance austenite. This electrode has a very stable arc, low spatter, easy strike and restrike, good slag detachability and porosity free smooth welds.
Mac Stain E122 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 (AC OCV 70 min)
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.  |
|
