Mac Nicro E227
AWS E320LR-15
Descriptions & Applications:
Mac Nicro E227 is designed to weld both cast and wrought alloys such as carpenter 20Cb-3 and similar materials with increased nickel levels, this higher nickel level improves resistance to stress corrosion cracking in chloride environments and reduces corrosion rates in the presence of sulphuric acids. Mac Nicro E227 may also be used to weld leaner nickel alloys of the 20.29.3 Cu Nb classification. The risk of weld metal microfissuring is eliminated by a relatively low silicon level and a high manganese to silicon ratio plus low sulphur and phosphorus levels.
Related Specification:
AWS E320LR-15
Typical All Weld Metal Chemical Analysis:
|
C
|
Mn
|
P
|
S
|
Si
|
Ni
|
Cr
|
Mo
|
Cu |
Nb
|
|
0.05
|
2.1
|
0.012
|
0.005
|
0.25
|
35
|
20
|
2.5
|
3.5
|
0.65
|
Typical All Weld Metal Mechanical Properties: As Welded
|
Ultimate Tensile Strength
|
650 N/mm²
|
| 0.2% Proof Stress |
420 N/mm² |
Current:
DC (+) or AC (Min OCV 80)
Sizes Available and Recommended Amperages:
|
2.5mm
|
3.2mm
|
4.0mm
|
|
60-90
|
80-120
|
130-170
|
Storage:
If allowed to become damp the electrodes should be re-dried for one hour at 150°C before use.
|
|
