Abratig 25.9.4L
Superduplex filler metal
Product description
| TIG wires for welding “Super duplex” stainless steels |
| Also suitable for joining “duplex” steels where optimum corrosion resistance is required. |
| Increased resistance to intergranular, pitting and stress-cracking corrosion. |
| Exceptionally high mechanical properties. |
Product application instructions
| ALLOY | UNS | DIN | W.-Nr |
| 2507 | S32750 | G – X2 CrNiMoN25 7 3 | 1.4469 |
| – | – | G – X3 CrNiMoN26 6 3 | 1.4468 |
| 329 LN | S31803 | X2 CrNiMoN22 5 3 | 1.4462 |
| – | – | X4 CrNiMoNb25 7 | 1.4582 |
| – | – | G – X6 CrNiMo24 8 2 | 1.4463 |
| – | – | G – X8 CrNi26 7 | 1.4347 |
| 100 | S32760 | X2 CrNiMoCuW25 7 3 | – |
| 52 N + | S32550 | – | – |
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Offshore platforms, subsea equipment
-
Desalination, pumps, exchangers, piping in seawater
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Chemical and petrochemical industry
-
Paper mills, environments with acids and chlorinated products
-
Wastewater treatment plants, gas processing plants
Wear resistance
Tensile strength
Corrosion
Classification
| AWS A5.9 | DIN 8556 | EN 12072 |
|---|---|---|
| ER2594 | G X2 CrNiMoN 25 10 | G 25 94 L / W 25 94 N L |
Chemical analysis (%)
| C | Mn | If | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|
| 0.02 | 0.3 | 0.3 | 25.0 | 9.5 | 4.0 | 0.25 |
Mechanical characteristics
| Rm (MPa) | Rp0.2 (MPa) | A (%) | Av - ISO - V |
|---|---|---|---|
| 850 | 650 | 25 | 80 J : + 20°C |
Why choose Superduplex filler metal?
Choosing our ABRATIG Superduplex (often referred to as ER2594, UNS S32750, or S32760) means you want the very best in corrosion and mechanical pressure resistance, especially for highly demanding industrial applications.
- Exceptional corrosion resistance
Very high resistance to pitting, crevice corrosion and stress corrosion in the presence of chlorides.
Ideal for marine, offshore or chemically aggressive process environments.
Molybdenum (Mo), chromium (Cr) and nitrogen (N) in high quantities → very high PREN (Pitting Resistance Equivalent Number) > 40.
- Excellent mechanical properties
Very high tensile and fatigue strength.
Better than austenitic stainless steels type 316L or 317L.
Reduces part thickness in certain cases (weight and cost savings).
- Two-phase metallurgical structure (50% austenite / 50% ferrite)
Combines the benefits :
Ductility and corrosion resistance of austenite
Strength, fatigue strength and crack resistance of ferrite
- TIG welding of superduplex requires :
Precise temperature control (not too hot, not too slow)
Often controlled preheating or cooling
