FCW 301
Hardfacing cupro-aluminium
Description & applications
• Copper-aluminium hardfacing alloy with additions of Fe, Ni and Mn to improve the mechanical properties.
• Good resistance to abrasion and corrosion.
• Temperature resistance up to 300°C.
APPLICATIONS
Used for pistons for injection of aluminium under pressure, valve seats, and cylinders for paper-making machinery. Suited to surfacing of iron and copper-base materials.
OPERATING CONDITIONS
Stringer or weaved beads
Can be welded gun leading or gun trailing
The use of pulsed current is recommended for improved wetting and bead appearance
Higher currents and voltages can be used, but cause increased element burn-off (particularly Al) and dilution, leading to lower hardness levels. Use of preheat and working temperatures up to 300°C will help forestall cracking.
Classification
| DIN 8555 | EN 14700 |
|---|---|
| MSG31-GF-300-C | T Cu1 |
Typical weld metal composition (%)
| Al | Fe | Mn | Ni | Cu |
|---|---|---|---|---|
| 12.0 | 3.5 | 0.5 | 0.4 | Base |
All weld metal mechanical properties
| Hardness 3 layers as welded |
|---|
| 320 HB |
Shielding gas
| ISO 14175: I1 (pure argon) | 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 | - | - |