Mac Nicro E222Mn
25.35Mn
Descriptions & Applications:
Extruded flux coated MMA electrode manufactured on a nearly matching core wire. The chemically basic flux, with a moisture resistant coating, gives a sound porosity free deposit with a recovery rate of approximately 120% with respect to the core wire. The electrode is designed to match the composition of Paralloy CR39W and Lloyds Thermalloy T57 and the deposited weld metal will be free from any micro-cracking. This alloy was developed from 800 type alloys with increased chromium and nickel contents and exhibits improved carburisation and oxidation resistance. It is used at temperatures up to 1100° C and is resistant to severe thermal shock and fatigue. Welding applications include centrifugal cast pyrolysis coils, reformer tubes, return bends and tees for the petrochemical industry.
Typical All Weld Metal Chemical Analysis:
|
C
|
Mn
|
Si
|
S
|
P
|
Cr
|
Ni
|
Mo
|
Nb
|
Cu
|
Pb
|
Sn
|
|
0.08
|
3.4
|
0.3
|
0.010
|
0.01
|
26
|
35
|
0.4
|
1.0
|
0.2
|
0.002
|
0.005
|
Typical All Weld Metal Mechanical Properties: As Welded
|
Ultimate Tensile Strength
|
750 N/mm²
|
| 0.2% Proof Stress |
560 N/mm² |
|
Elongation
|
15% |
| Reduction of Area |
15% |
Current:
AC/DC (+)
Sizes Available and Recommended Amperages:
|
2.5mm
|
3.2mm
|
4.0mm
|
|
60-90
|
70-120
|
100-150
|
Storage:
If allowed to become damp the electrodes should be re-dried for one hour at 250°C before use.
|
|
