AMPCO-CORE® 300
Cored Wire
Description and Application
AMPCO-CORE® 300 is an aluminum bronze flux core wire for use with the Gas Metal Arc Welding process.
AMPCO-CORE® 300 is primarily an overlay filler metal. In addition to high hardness, the deposit also has excellent bearing and wear-resistant qualities.
These characteristics – hardness, bearing properties and wear resistance all combine to make AMPCO-CORE® 300 ideal for surfacing iron and copper-base materials. Dies overlaid with AMPCO-CORE® 300 have surprising freedom from scratching and galling; die marks are almost completely eliminated.
$900.90 – $905.85
Typical Applications
| Fabrication of new rebuilding of worn | ferrous dies | used for forming or drawing titanium |
| stainless steel | low to medium carbon steel |
Product availability and packaging
AMPCO-CORE® 300 is available from stock 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
The flat welding position 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/span> |
Continuous 27-31 Pulsed 22-25 |
All diameters 5/8″- 3/4″ (10-20) |
AMPCO-CORE® 300
| Limiting Chemical Composition | |
| % (filler metal) | |
| Copper* | Balance |
| Aluminum | 13.5 |
| Iron | 4.0 |
| Mechanical Properties | |
| (Nominal all-weld metal values) | |
| Hardness (HBW 10/3000) Three layer deposit on mild steel |
364 |
