General Description
NW 235T is a Fe-Cr-Al alloy used in arc and flame spraying systems. They can produce dense, well-bonded coatings with excellent wear and high temperature oxidation resistance.
Equivalent to:
TAFA Alcro
Typical Applications
- Applications where good corrosion and oxidation Resistance is required
- Applications for wear resistance such as erosion and abrasion
- Machine element repair and restoration
- Resistance to chloride-ion attack in marine environments
- As a replacement for hard chrome plating
- Bond coats in high-temperature coating systems,
- Protective coatings against sulphur-containing atmospheres
- Protective coatings against scaling of conventional low alloy steels.
Chemical Composition
| Grade | C% | P% | S% | Mn% | Si% | Cr% | Al% | Fe% |
|---|---|---|---|---|---|---|---|---|
| NW 235T | Max 0.05 | Max 0.025 | Max 0.025 | Max 0.5 | Max 0.5 | 20.5-23.5 | 4.2-5.3 | Bal. |
Physical Properties
Density: 7.25 g/cm3
Melting Point: 1500 °C
Specific Resistance (at 20°C) (µΩ-m): 1.35
Typical Deposit Characteristics
Typical Hardness: 85-90 HRB
Bond Strength: 6300 psi
Deposit Rate: 10 lbs /hr/100A
Deposit Efficiency: 70%