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 HV_0,1
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

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