WELDFAST SERIES
HARDFACING ELECTRODES
 
WELDFAST HARDEX I WELDFAST HARDEX III R  
WELDFAST HARDEX II WELDFAST HARDEX IV  
WELDFAST HARDEX II R IS 7303 EFe-B314 WELDFAST MANGAN  
WELDFAST HARDEX III WELDFAST MANGAN (SPL)  
 
Product Name / Specification
Characteristics
All Weld Analysis (%) Mechanical Properties Application
WELDFAST HARDEX I
A low hydrogen type electrode deposits wear resistant material with
excellent resistance to heavy shocks. The deposit can be heat treated and it
is machinable in as welded condition.

Re-drying temperature is 300°C for 1 hr.
C : 0.20-0.30
Mn : 0.80-1.20
Si : 0.50-0.80
S : 0.03 max
P : 0.03 max
As Welded : 250 - 300 BHN
Heat Treated : 450 - 500 BHN
(Three layer deposit)
Current : AC/DC+
For rebuilding wagon wheels, gear teeth, sprockets,
idler shafts, wire drawing drums etc.
Product Name / Specification
Characteristics
All Weld Analysis (%) Mechanical Properties Application
WELDFAST HARDEX II
A low hydrogen type electrode deposits wear resistant material with
excellent resistance to moderately heavy shocks and wear caused by heavy sliding or rolling friction.

Re-drying temperature is 300°C for 1 hr.
C : 0.15-0.25
Mn : 3.00-3.50
Si : 0.50-0.80
Cr : 0.30-0.70
S : 0.03 max
P : 0.03 max
As welded : 350- 450 BHN
(Three layer deposit)
Current : AC/DC+
For pneumatic equipments, anvils, wheels flanges,
sprockets, bucket chain links, bucket bases, guide
rollers, actuating cams, bucket laddle tumblers. The electrode can be used on carbon, low alloy steels and on various grades of cast iron.
Product Name / Specification
Characteristics
All Weld Analysis (%) Mechanical Properties Application
WELDFAST HARDEX II R
IS 7303 EFe-B314
It is a medium-heavy coated rutile, air hardening type electrode for hardfacing on mild steel, carbon steel and low alloy steels. In hard base materials it is advisable to use buffer layer of Weldfast LH-16. Weld deposit is machinable with good cutting tools.

Re-drying temperature is 120°C for 1/2 hr.

Approvals : RDSO : CLASS H4B
C : 0.05-0.15
Mn : 0.50-1.00
Si : 0.30-0.50
Cr : 2.00-3.00
S : 0.03 max
P : 0.03 max
As welded : 350- 450 BHN
(Three layer deposit)
Current : AC/DC+
For shear blades, cold-punching dies, converyor
parts, crawler parts, axle, sprockets, latch bars, pulleys, brake shoes, large cog wheels and other steel castings, where resistance to abrasion combined with toughness is required.
Product Name / Specification
Characteristics
All Weld Analysis (%) Mechanical Properties Application
WELDFAST HARDEX III
A low hydrogen type electrode and deposits are wear resistant with
excellent resistance to abrasion even under moderate shocks.

Re-drying temperature is 300°C for 1 hr.
C : 0.40-0.60
Mn : 0.60-1.20
Si : 0.50-0.80
Cr : 5.00-7.00
Mo : 0.50-1.00
V : 0.40-0.80
S : 0.03 max
P : 0.03 max
As welded : 600- 650 BHN
(Three layer deposit)
Current : AC/DC+
It is very much suitable for hardfacing on carbon steels, low alloy steels and on cast irons. The
applications include industrial knife edges, mill
hammers, dredging bucket rims, shovel jaws and parts of agricultural and earth moving machinery.
Product Name / Specification
Characteristics
All Weld Analysis (%) Mechanical Properties Application
WELDFAST HARDEX III R
A medium heavy coated rutile type electrode for hard facing on mild steel,
carbon steel and low alloy steels, where approx 600 Brinell hardness is
required. Weld is non-machinable and can only be ground. When used on
austenitic manganese steel parts, give a buffer layer of Weldfast 307.

Re-drying temperature is 120°C for 1/2 hr.
C : 0.40-0.60
Mn : 0.60-1.20
Si : 0.30-0.60
Cr : 2.50-3.00
S : 0.03 max
P : 0.03 max
As welded : 600- 650 BHN
(Three layer deposit)
Current : AC/DC+
The electrode is suitable for abrasion, impact or a combination of both, such as metal cutting and
forming tools, hot and cold punching dies, drill bits,
shears and croppers, oil expeller, crusher hammers, cane and bamboo cutting knives, crane wheels,
conveyor buckets etc.
Product Name / Specification
Characteristics
All Weld Analysis (%) Mechanical Properties Application
WELDFAST HARDEX IV
A low hydrogen type electrode which deposits wear resistant material with excellent resistance to abrasion. The deposit can withstand very heavy
compression without crumbling.

Re-drying temperature is 120°C for 1/2 hr.
C : 2.00-4.00
Mn : 0.50-2.50
Si : 1.50-4.00
Cr : 4.00-7.00
S : 0.03 max
P : 0.03 max
As welded : 580- 630 BHN
(Three layer deposit)
Current : AC/DC+
For oil expeller worms, ploughshears, sand gravel,
coal conveyor parts etc.
Product Name / Specification
Characteristics
All Weld Analysis (%) Mechanical Properties Application
WELDFAST MANGAN
A highly alloyed austenitic electrode, depositing wear resistant material with excellent resistance under heavy impact loads. The deposit rapidly work hardens and provides a fairly high hardness with a tough core to absorb shocks.

Re-drying temperature is 300°C for 1 hr.

Approvals : BEML
C : 0.50-1.00
Mn : 12.00-14.00
Ni : 3.00 max
S : 0.03 max
P : 0.03 max
Hardness : 240-260 BHN
(As welded)
Hardness : 500-550 BHN
(Work hardened)
Current : AC/DC+
Ideal for deposit on mild, carbon or low alloy steels
and manganese steel. It is also used to resurface roll crusher, jaw crusher, shovel and excavator bucket tooth points, rail switch over points etc.
Product Name / Specification
Characteristics
All Weld Analysis (%) Mechanical Properties Application
WELDFAST MANGAN (SPL)
A hard facing electrode, depositing wear resistant material with excellent
resistance under moderate impact loads. The deposit rapidly work hardens and provides a fairly high hardness with a tough core to absorb shocks. The weld may give relief cracks but that may not affect the application.

Re-drying temperature is 300°C for 1 hr.
C : 0.50-1.00
Mn : 12.00-14.00
S : 0.03 max
P : 0.05 max
Hardness : 240-260 BHN
(As welded)
Hardness : 500-550 BHN
(Work hardened)
Current : AC/DC+
Useful for hard facing on various grades of carbon
steel & Mn steels.
 
 
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