General Description
NW 450T is a Ni-Cr-Ti alloy wire designed for arc spraying. This alloy produces dense, well-bonded coatings with excellent corrosion resistance and good wear resistance. It produces coatings which are extremely resistant to corrosive vanadium and sulfur gases in boiler atmospheres.
Equivalent to:
TAFA 45 CT
Metco 8500
Typical Applications
The coatings of NW 450T wire is used to protect boiler tubes in thermal power plant such as water cooling tube, superheater tube, reheater tube and economizer tube from oxidation and sulfidation against high temperature.
It also proven to be particularly effective as a protective arc spray coating for boiler tubes in black liquor recovery boilers and coal fired utility boilers.
Chemical Composition
| Grade | Ni% | Cr% | Ti% | C% | Mn% | Fe% | S% | Si% | Cu% | P% |
|---|---|---|---|---|---|---|---|---|---|---|
| NW 450T | Bal. | 41.0-45.0 | 0.3-1.0 | 0.01-0.1 | Max 0.2 | Max 0.5 | Max 0.015 | Max 0.2 | Max 0.5 | Max 0.02 |
Typical Deposit Characteristics
Typical Hardness: 30-35 HRC
Bond Strength: 7000 psi
Deposit Rate: 10 lbs /hr/100A
Deposit Efficiency: 85%