Postalloy® DuraChrome™ 2836-MCO
Postalloy® DuraChrome 2836-MCO is a high hardness multi-carbide (complex carbide) hardfacing alloy that resists severe abrasion, including high stress grinding, low stress scratching and gouging abrasion. It maintains its hardness and wear resistance up to 1300°F (700°C). The chemistry is highly tolerant of dilution. One layer will easily outwear two layers of ordinary chrome carbides and in some applications the wear is equal to tungsten carbide. Use on low carbon mild steel, manganese, stainless, and low alloy steels.
Specifications
Product Type
- Metal-cored
- Gas-shielded
- Open-arc
- Wire
- Deposits are slag-free
Applications
- Blast furnace charging equipment
- Agricultural implements
- Sinter plant parts
- Cement mill parts
- Coke pusher shoes
- Brick making equipment
- Wear plates
- Cereal grinding equipment
- Tong bits
- Conveyor screws
- Slag ladles
- Mixer paddles
- Ash fans
- Solid waste shredder parts
Weld Deposit Properties
- Additional:
- Cannot be flame cut
- Deposits will readily relief check-crack
- Deposit Thickness:
- 1-2 layers
- Heat Resistance:
- Up tp 1300 °F (700 °C).
- Hardness:
- 63Rc - 67Rc
Welding Parameters
Current Type: DC Electrode Positive , DC Electrode Negative
| Volts | Amps | Diameter | Stick Out |
|---|---|---|---|
| 15-26 | 100-225 | .045" (1.1mm) | 3/4"-1"(19-25mm) |
| 20-28 | 160-300 | 1/16" (1.6mm) | 1"-1½ "(25-38mm) |
| 28-30 | 230-400 | 3/32" (2.4mm) | 1"-1¼"(25-32mm) |
| 28-32 | 250-400 | 7/64" (2.8mm) | 1½ "(38mm) |
Welding Procedure:
Welding Procedure
While all sizes of Postalloy 2836-MCO will easily operate with or without a gas cover, you may find applications for .045 and 1/16 for which you prefer a shielding gas. If a gas cover is used, Argon/CO2 or 100% CO2 is recommended. This will cause amperages to go up by about 10% and the stick-out should be shortened. When welding out of position, use the lower range of amperages and voltages. In addition, a gas cover maybe useful, especially when using a constant current power source and voltage sensing feeder.
Product Equivalent:
Electrode: Postalloy® 218HD Tubular Electrode
Packaging Options
| Diameter | Standard Packaging | Standard Packaging Available |
|---|---|---|
| .045" (1.1mm) | 25 lb (11.30kg) spool | 220 lb (99.80kg) drum |
| 1/16" (1.6mm) | 25 lb (11.30kg) spool | 220 lb (99.80kg) drum |
| 3/32" (2.4mm) | 55lb (22.70kg) | 220 lb (99.80kg) drum |
| 7/64" (2.8mm) | 55lb (22.70kg) | 220 lb (99.80kg) drum |