AMA 1803J | Product Name: |  |
| ~ E 307-15 (mod.) | AWS/ASME SFA-5.4: | |
| 1.4370 | Comparable No. of material | |
| E 18 8 Mn B 20+ | DIN 8556: | |
| EN1600 | ||
| E 18 8 Mn B 42 | PREN 1600: |
Application/properties:
electrode 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):
| Ni | Cr | Si | Mn | C |
| 9 | 19 | 0.4 | 6 | 0.12 |
Mechanical Properties of all-weld metal:
(single values are typical values)
| Impact energy(j) ISO – V | Elongation A5 (%) | Yield Strength 0.2% (N/mm2) | Tensile Strength (N/mm2) | |
-60°C | +20°C | |||
| 60 | 100 | 35 | 400 | 650 |
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| Welding Parameters | |||
| Amperage (A) | Length (mm) | Diameter (mm) | |
| 65 – 70 | 250 | 2.5 | |
| 95 – 120 | 300 | 3.25 | |
| 110 – 160 | 350 | 4.0 | |
| 150 – 190 | 350 | 5.0 | |
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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.