Hardfacing Electrode HF-425 x 2.5 mm – 4.5 Kg

HF-425-25

£61.10 ex VAT £73.32 inc VAT


Product Model:
HF-425-25
Availability:
In Stock

  • Material: Austenitic matrix containing Cr carbides
  • Pack Size: 2.5 Kg
  • Electrode Diameter: 4.5 mm
  • Standards: DIN 8555 : E10-UM-60-GRPZ
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Description

Hardfacing Electrode HF-425 x 2.5 mm – 4.5 Kg

HF-425 is a synthetic rutile coated hardfacing electrode with a high recovery rate of 160%. It’s designed for applications that are subject to abrasive wear by minerals, combined with medium shocks and compression. The electrode has an austenitic matrix containing Cr carbides, which gives the deposit resistance to corrosion due to its high chromium content (32%) and can withstand heat up to 200°C. The electrode offers easy flow and self-releasing slag. The maximum hardness, as deposited, is achieved in 3 layers.

Features & Benefits:

  • Synthetic Rutile Coated: Ensures smooth welding and a consistent arc.
  • High Recovery: Offers a recovery rate of 160%.
  • Corrosion & Heat Resistant: Due to the high chromium content, the deposit resists corrosion and can withstand heat up to 200°C.
  • Easy Flow & Self-Releasing Slag: Simplifies the welding process and ensures a clean weld.

Common Applications:

  • Abrasion & Shock Resistance: Suitable for applications requiring resistance to high abrasion combined with good shock resistance.
  • Machinery & Equipment: Used for excavating and crushing equipment, surfacing of endless screws, mixer blades, pump bodies for abrasive materials, excavator teeth, and crushing installations for minerals.
  • Industrial Applications: Ideal for concrete pumps, ore crushing, ploughshares, screw presses for the brick manufacturing industries, and more.

All weld metal Hardness

~ 58HRC 61 – 63HRC

Typical weld metal  composition (%) 

Element C Si Mn Cr Fe
Content 3.5 1.0 1.0 32 Rem

Packaging data

Size (mm) 2.5×350 3.2×350 4.0×350 5.0×450
Electr./Packet 161 102 69 40
Electr./Carton 644 408 276 160
Kg/1000 Electr. 28 49 72 161
Packets/Carton 4 4 4 4
Kg/Packet 4.5 5 5 6.5
Kg/Carton 18 20 20 26

Welding Parameters

Amps (A) 90 130 160 210

Additional Information

  • Redrying, if necessary, 1h/250°C. Guide electrode almost vertically with a short arc.
  • In case of hardfacing highly alloyed steels like stainless steels, it is recommended to apply a cushion layer with  18/8Mn. [AS-300]

Welding Positions

  • 1G (Flat Position)

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Hardfacing Electrode HF-425 x 2.5 mm - 4.5 Kg Hardfacing Electrode HF-425 x 2.5 mm - 4.5 Kg
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