Surfacing

PP-Np-12H ( Np-12Cr )

Flux-cored wire is designed for open-arc, submerged-arc or gas-shielded hardfacing of parts exposed to an abrasive environment with extra risk of corrosion, at normal and increased temperatures (up to 450°C).

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Additional Information

Diameter, mm	1.2 - 4.0
Curent type / Shielding	DC+ / Open arc, flux, Ar, СО₂, Ar + CO₂
Working conditions	Abrasive, corrosion at temperatures up to 450 °C
Applications	Hardfacing of continuous-casting machine rollers, sealing surfaces of gas, oil, and general purpose industrial fittings operating at temperatures up to 450 °C

Recommended flux	EFA-1, АN-26S/P, АN-20S/P
Slag separation	good
Deposit factor, g/A·h	10 - 18
Crack susceptibility	moderate
Wire consumption, kg	1.05 - 1.2
Hardness of weld metall	HRC 28 - 47

OPERATING CONDITIONS (submerged arc)

Wire diameter, mm	Current, A	Voltage, V	Deposition rate, m/h
1.6	150 – 230	27 – 29	8 – 15
2.0	180 – 280	29 – 31	10 – 18
2.4	220 – 320	30 – 32	13 – 20
2.8	260 – 380	31 – 33	14 – 22
3.2	300 – 430	32 – 34	15 – 25

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PP-Np-12H ( Np-12Cr )

Current, A

Voltage, V