CORODUR® SP 221
Flux cored wires for Thermal Spray Application
EN ISO 14919 – 6,5 – 1,6 - 4
MATERIAL REVIEW
NiCrBSi cored wire to apply wear resistant and corrosion resistant protective coatings with good resistance against Chlorides in boiler atmosphere up to 450°C. Porosity of below 2% can be achieved. Coatings made by CORODUR SP 221 can be sintered after application (self-fluxing). Designed for arc spraying but may also be sprayed by wire- and high-velocity-wire-flame-spraying.
APPLICATION
Application for high loaded components of chemical plants or food industry, on water walls and tubes of boiler.
Composition (Weight.-% )
Ni | Cr | Si | B | Mo | C |
Bal. | 20 | 4,5 | 0,7 | 2,0 | 0,4 |
Physical Properties of the coating
Hardness: 500-800 HV0,1
Melting point: ca 1070 °C
Wire consumption: 1,0 kg/m2 / 0,1 mm
Spray Procedure (Arc)
Atomizing Air Pressure | Nozzle Cap |
Arc Load Volt | Ampere |
Stand off mm |
Coating thickness / pass mm/pass |
Deposit Efficiency % |
|
Standard 1,6 | 3,5 bar | 30-32 | 100-200 | 75-125 | 0,1 | 70% |
SALES UNIT
Coil | "BS 300" = 15 kg | "BS 450" = 25 kg | Other dimensions on request |
Wire Diameter | 1,6 mm (1/16") | 2,4 mm |