Beschreibung
Typical Applications
| Shafts | Guide grooves | Marine applications |
| Overlaying steel parts |
Product availability and packaging
AMPCO-CORE® 250S is available in two diameters: 0.045” (1.2mm) and 0,062” (1.6mm). Both sizes are available in 12″ (300mm) spools weighing 33lb (15 kg) each. Other diameters are available upon request.
Welding position and deposits
Flat position welding is recommended. Backhand (trailing) welding is preferred rather than forehand (pushing) to make either stringer or weaved beads.
Shielding gas
100% Argon
Operating conditions
| Current type | Gas flow rate | Intensity [A] | Voltage [V] | Stick-out [inch (mm)] |
| DC+ (DCEP), continuous or pulsed |
25 – 42 cfh (12-20 L/min) | 0.045″ (1.2 mm) 150-320 0.062″ (1.6 mm) 200-350 |
Continuous 27-31 Pulsed 22-25 |
All diameters 5/8″- 3/4″ (10-20) |
NB. Higher intensities and voltages can be used but will result in increased element burn-off (particularly Al) and dilution, leading to lower hardness levels. Preheating and working temperatures of up to 300°C are recommended to avoid cracking.
AMPCO-CORE® 250S
| Limiting Chemical Composition | |
| % (filler metal) | |
| Copper* | Balance |
| Aluminum | 11.5 |
| Nickel | 4.8 |
| Iron | 2.0 |
| Manganese | 1.0 |
| Mechanical Properties | |
| (Nominal all-weld metal values) | |
| Hardness (HBW 10/3000) Three layer deposit on mild steel |
215 |
*Hardness will vary depending on quality of the weld and experience and knowhow of the welder.
Document Download
AMPCO-CORE® 250S Technical Data Sheet
