OCr25Al5 is an iron chrome aluminum alloy wire specifically designed for arc spraying. It produces dense, well-bonded coatings with excellent wear and high temperature oxidation resistance. It is widely used for machine element repair and dimensional res toration applications. OCr25Al5's low shrink characteristic alloys increased coating thickness. OCr25Al5 is machinable.
TYPICAL DEPOSIT CHARACTERISTICS:
Þ Typical Hardness: HRB 85-90
Þ Bond Strength: 6300 psi
Þ Deposit Rate: 10 lbs/hr/100A
Þ Deposit Efficiency 70%
Þ Wire Coverage: 0.8 oz/ft2 / mil
Þ Surface Texture * Variable
Þ Machinability Good
* Depends on air pressure used
SURFACE PREPARATION
Surface should be clean, white metal, with no oxides (rust), dirt, grease, or oil on the surface to be coated. Note: It is best not to handle surfaces after cleaning.
Recommended method of preparation is to grit blast with 24 mesh aluminum oxide, rough grind, or rough machine in a lathe.
APPLICATION
Þ Boiler Tubes
Þ Boiler Tube Shields
Þ Dimensional Restoration
SPECIFICATION
FeAlCrSi
NOMINAL CHEMICAL COMPOSITION (wt%)
| Cr |
Al |
Mn |
Si |
Fe |
| 23.5 |
5.3 |
0.45* |
1.0 |
Bal |
RECOMMENDED SPRAY PARAMETERS:
| Diameter |
Air Pressure |
Voltage |
Amperage |
Standoff |
| 1/16" (1.6mm) |
*50-60 psi |
*28-30 |
*100-200 |
*4-6 in (10-15 cm) |
* Parameters are typical and may vary depending on equipment used. Contact your equipment manufacturer for optimum spray parameters
STANDARD SIZES & PACKAGING:
| Diameter |
Packaging |
| 1/16" (1.6mm) |
15kg/spool |
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