HardCover 440 (HC440) is a tubular,
self-shielded wire for metal arc hardfacing.
It produces a low alloy steel weld deposit for
heavy multi-layer build-up work on carbon
steel parts. HC440 is used for rebuilding
and resurfacing components subject to
metal-metal wear and moderate abrasion.
The weld deposit is machinable.

Typical Applications
• Build-up of earthmoving equipment such as
tractor rollers, idlers, chains and drive
sprockets
• Excavator pads
• Electric shovel track carrier rolls
• Steel shafts
• Gears
• Crane wheels
• Steel mill rolls
• Mine car wheels
• Railcar couplings

AWS Classification

Hardfacing

Welding Current

DCEN

Typical wire chemistry

(As Welded)
C 0.15
Mn 1.5
Si 0.8
Cr 1.5
Fe BAL

Typical Mechanical Properties
(As Welded on mild steel)
Hardness on 3 layers 360 HB

Welding Position

F,H

Available Diameters and suggested
Operating Range in Amps
.045″ 120 – 320
1/16″ 150 – 350
3/32″ 200 – 450