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HH-750B

Name: HH-750B
Brand: Fehong Wear Resistant Technology Co., Ltd
SKU: fcw-wire-for-cco-wear-plate0002

Model Number: HH-750B
Hardness: ≥ 60 HRC
Chemical Composition (C): 5.0 - 6.0%
Chemical Composition (Cr): 25 - 32%
Chemical Composition (Si): 0.7 - 1.5%
Chemical Composition (Mn): 0.6 - 1.0%
Chemical Composition (Ni, V, Ti, Mo, B + Others): Appropriate amount
Wire Diameter: 2.8 mm
Welding Current: 360 - 450 A
Welding Voltage: 29 - 33 V
Max Operating Temperature: ≤ 450°C
Packaging: 250 kg/barrel; 125 kg/barrel

More Details

Product Description

HH-750B is a high chromium hardfacing flux-cored welding wire (FCW) for wear plates, specially developed for the production of CCO wear plates (chromium carbide overlay wear plates, bimetal wear plates) and wear-resistant pipes. The deposited metal contains primary carbides, which provides high resistance to abrasive wear and long service life in severe working conditions.

Key Properties

Anti Abrasion

Anti Impact

Heat Resistant

Anti Corrosion

Product Features

Feature	Description
Wear Resistance	Deposited metal contains primary carbides, highly resistant to abrasive wear.
Microstructure	Iron-based high chromium high carbon hard alloy: C - Cr - Fe.
Machinability	Grinding only.
Cutting	Not suitable for flame cutting.
Max Deposit Thickness	Up to 30 mm by multi-layer surfacing.
Welding Performance	Low spatter, smooth and neat weld bead, high welding efficiency and high deposit metal recovery rate.

Typical Chemical Composition (Pure Deposited Metal, After 3-layer Welding)

Element	Composition (%)
C	5.0 - 6.0
Cr	25 - 32
Si	0.7 - 1.5
Mn	0.6 - 1.0
Ni, V, Ti, Mo, B + Others	Appropriate amount

Recommended Welding Parameters

Wire Diameter (mm)	Current (A)	Voltage (V)	Stick-out (mm)
2.8	360 - 450	29 - 33	25 - 40

Applications

Production of CCO wear plates (chromium carbide overlay wear plates / bimetal wear plates).
Production of wear-resistant pipes.
Hardfacing repair of chutes, sieves, conveying channels, liners, hoppers and other wear parts.
Working temperature should not exceed 450°C.