Eectrode for welding of dissimilar steels and for surfacing purposes. The weld metal consists of austenitic Cr-Ni-steel with possible small amounts of delta-ferrite; it is non-scaling up to 850°C. It features high resistance to cracking and is therefore indicated for difficult-to-weld steels and depositing stress-relaxing buffer layers on crack sensitive base metal or beneath hard-facing deposits. Highest temperature of dissimilar steel joints is +300°C; at higher temperatures AMA 1604G electrode shall be used. Weld metal will work harden.
Weld metal analysis in % (typical values):
C
Mn
Si
Cr
Ni
0.12
6
0.4
19
9
Mechanical Properties of all-weld metal:
(single values are typical values)
Tensile Strength ( N/mm 2 )
Yield Strength 0.2% ( N/mm 2 )
Elongation A5 (%)
Impact energy(j) ISO - V 20°C -60°C+
650
400
35
100 60
Welding Parameters
Diameter (mm)
Length (mm)
Amperage (A)
2.5
250
65 – 70
3.25
300
95 – 120
4.0
350
110 – 160
5.0
350
150 – 190
Materials:
Dissimilar steels (unalloyed to austenitic steels), difficult to weld steels (e.g. heat treatable and tool steels), high manganese steels.
