Abracrom 2509MoB
Basic Coated Electrode for Super-Duplex Stainless Steels
Description & applications
Basic coated electrode with an austenitic - ferritic microstructure ( duplex ~ 40% ferrite ). The weld metal can be applied for operation temperatures up to 250°C and is resistant in chloride containing medias against pitting as well as crevice and stress corrosion.
Main applications: For but welding and cladding of steels and castings with an austenitic - ferritic structure, of the same or similar composition, which are used for pumps, vessels , piping systems etc. attacked by chloride containing solutions. But also for impellers and other components which require high strength combined with corrosion attack. Pitting index: > 40.
Classification
| AWS A5.4 | ISO 3581-A | EN1600 |
|---|---|---|
| E2594-15 | E 25 9 4 N LB 42 | E 25 9 4 N LB 42 |
Typical weld metal composition (%)
| C | Si | Mn | Cr | Ni | Mo | Cu | N | Fe |
|---|---|---|---|---|---|---|---|---|
| <0.04 | 0.5 | 1.5 | 25.0 | 9.5 | 4.0 | 0.7 | 0.23 | Rest |
All weld metal mechanical properties
| Rm (MPa) | Rp0.2 (MPa) | A5 (%) | KV (J) |
|---|---|---|---|
| 850 | 720 | 25 | 20°C: 70 J; -40°C: 45 J |
Packaging data
| Dimension | 2.5x300 | 3.2x350 | 4.0x350 |
|---|---|---|---|
| Electr. / packet | 219 | 139 | 93 |
| Electr. / carton | 876 | 556 | 372 |
| Kg 1000 electr. | 18.3 | 36 | 54 |
| Packets / carton | 4 | 4 | 4 |
| Kg / packet | 4 | 5 | 5 |
| Kg / carton | 16 | 20 | 20 |
Amperes
| A | 50-75 | 70-100 | 90-150 |
|---|
Welding Instructions
Redrying 2-3 hours at 250-300°C. Guide electrodes with a slight declination and weld with a short arc. Interpass temperature: <150°C.
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