Postalloy® 2512-MCG
Postalloy® 2512-MCG conforms to AWS CoCr-B. Slightly harder and more wear resistant than 2506-MCG, due to increasing level of hard chromium carbides, but its impact resistance is somewhat lower and is also tougher to machine. Higher tungsten content improves the hot hardness properties at higher temperatures. Weld deposits also have a greater tendency to relief check if welding procedures are not closely monitored.
Specifications
Product Type
- Metal-cored
- Gas-shielded
- Cobalt Base Hardfacing Alloy
Applications
- Saw teeth, Extrusion Dies and Chain saw bars.
Weld Deposit Properties
- Room Temperature Hardness:
- 45-50Rc
- Hardness at 1500 °F (816 °C):
- 35Rc
- Deposit Thickness:
- 2 maximum
- Machinable:
- Yes
Welding Parameters
Current Type:
| Volts | Amps | Short Arc | Gas | Stick Out |
|---|---|---|---|---|
| 16-24 | 80-225 | .045" (1.2mm) | Ar/CO2 | 3/4" (19mm) |
| 16-24 | 80-225 | 1/16" (1.6mm) | Ar/CO2 | 3/4" (19mm) |
| Volts | Amps | Spray Arc | Gas | Stick Out |
|---|---|---|---|---|
| 26-31 | 220-300 | .045" (1.2mm) | Ar/Ox | 3/4" (19mm) |
| 26-31 | 220-300 | 1/16" (1.6mm) | Ar/Ox | 3/4" (19mm) |
Welding Procedure:
This wire operates over a wide range of settings and can be used in short-arc and spray transfer. For short-arc welding, use 16-24 volts, 80-225 amps. CO2 gives the best control, but the most dilution and lowest hardness on first pass. Argon/CO2 (75/25) gives good control, a better bead appearance and higher first pass hardness. For spray-arc, use 26-31 volts, 220-300 amps. Argon/Oxygen (98/2) works well. It produces minimal dilution and high first pass hardness. Gas flow rate - 40-45 cfh.
Packaging Options
| Diameter | Standard Packaging |
|---|---|
| .045" (1.2mm) | 5 lb (2.27kgs) spool, 25 lb (11.30kgs) spool |
| 1/16" (1.6mm) | 5 lb (2.27kgs) spool, 25 lb (11.30kgs) spool |