FCW CMA1
The weld metal is a Cu - Mn - Ni - Al bronze
Description & applications
• Special cored wire for GMAW
• The weld metal is a Cu - Mn - Ni - Al bronze
• Weld deposit resists the combined effects of corrosion, erosion and cavitation
• Sound, pore free deposits on ferrous and non-ferrous base materials
APPLICATIONS
The building up of aluminium bronze, cladding components undergoing metal to metal wear under high pressure. Especially suited for marine environments. The addition of nickel improves corrosion resistance in heat and rough seawater. Excellent resistance to cavitation and stress corrosion cracking.
Examples
Heat exchanger elements for sea-water desalination equipment, bearings, valves, gears etc.
Boat propeller castings as specified in American specifications Mil-B-21230-A
Classification
| DIN 8555 | EN 14700 |
|---|---|
| MSG 31-GF-200-C | T Cu1 |
Typical weld metal composition (%)
| Al | Fe | Mn | Ni | Cu |
|---|---|---|---|---|
| 8.00 | 3.00 | 11.50 | 2.00 | Bal. |
All weld metal mechanical properties
| Hardness – 3-layer deposit on mild steel |
|---|
| 210 HB |
Shielding gas
| I3 (Ar + 30% He) | |
| Current type | DC(+) continuous or pulsed |
| Gas flow rate | 12 - 20 l/min. |
| Recovery | 90 % |
Operating conditions
| Diameter [mm] | Intensity [A] - Range | Voltage [V] - Pulsed | Voltage [V] - Continuous | Stick-out [mm] - Range | Stick-out [mm] - Optimum |
|---|---|---|---|---|---|
| 1.2 | 150-320 | 22-25 | 27-31 | 10-20 | 15 |
| 1.6 | 200-350 | 22-25 | 27-31 | 10-20 | 15 |
Welding positions
EN ISO 6947 : PA, PB
ASME IX: 1G, 1F, 2F
Packings & Diameters
| Diameters [mm] | 1.2 - 1.6 | 1.6 |
|---|---|---|
| Packing(s) | EN ISO 544: BS300 | EN ISO 544: B450 |
| Weight [Kg] | 15 | 25 |
| Description | - | - |