En
Fa~E 307–15 (mod.)
1803j ama 1803j
Special welding electrode for stainless and heat-resistant steels
AMA 1803J
| AWS/ASME SFA – 5.4 : | ~E 307–15 (mod.) |
| DIN 8556 : | E 18 8 Mn B 20+ |
| Comparable No. of material : | 1.4370 |
| prEN 1600 : | E 18 8 Mn B 42 |
Application/properties:
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.
Rebaking:
required at 300°C for 2 hours.