Brand
Name Classification |
Description |
Typical
Weld Metal Properties |
Welding
parameters |
Applications |
Chemical
Composition (%) |
Mechanical
Properties |
Ratna
HF1
|
A
medium heavy coated, air hardening, rutile type electrode for hard
facing on mild steel and low alloy steel. Well deposits are normally
machine able, recommended to use RATNA 7016 as buffer layer while
working on hard based materials. Gives moderate toughness and hardness. |
C
0.0250
Mn
0.650
Si
0.440
Cr
2.000
|
Hardness
240 - 280 BHN |
AC/DC
(-)
Dia
Amps
(mm)
3.15
100-130
4.00
140-170
5.00
190-220
|
Suitable
to use on hammers, pinion teeths, railway and tram rails, gear shaft
couplings, axels, cane, crushers, machine parts where toughnes and
hardness is desired with machine able properties |
Ratna
HF2
|
A
medium heavy coated, air hardening, rutile type Electrode for overlaying
hard surface on mild steel and low alloy carbon style. Well deposit
is non machine able type, recommended to use RATNA 7016 as
buffer layer while working on hard based materials. Gives resistance
to abrasion and toughness. |
C
0.0250
Mn
0.600
Si
0.450
Cr
3.000
|
Hardness
360 - 410 BHN |
AC/DC
(-)
Dia
Amps
(mm)
3.15
100-130
4.00
140-180
5.00
180-220
|
Suitable
to use on couplings, brake shoes, canes, gears, cog wheels, crawler
parts, chefs, flow sheers, blades and components where abrasion
resistance coupled with toughness is called for. |
Ratna
HF3
|
A
mdium heavy coated, air hardening iron powder type electrode for
overlaying hard surface on mild steel and low alloy carbon steel.
Deposits are non machine able and can only be grounded. It is best
suited for abrasion and impact or both together in service.Use RATNA
HF-SSN/7016 as buffer layer on austenitic/ carbon steel |
C
0.550
Mn
0.400
Si
0.440
Cr
6.500
|
Hardness
54 - 60 HRC |
AC/DC
(-)
Dia
Amps
(mm)
3.15
90-125
4.00
140-175
5.00
175-210
|
Suitable
for mild rails, crushers hammers, drilling bits, bamboo and cane
cutting knives, conveyor buckets, ncrane wheels, oil expellers etc. |
Ratna
HF4
|
A
medium heavy coated hydrogen controlled, iron powder, air hardening
type hard facing electrode with weld deposits is hard and cannot
be machined. Weld dressing is possible by grinding, can with stand
friction and moderate impact. |
C
0.700
Mn
0.800
Si
0.540
Cr
6.500
Mo
0.500
V
0.300 |
Hardness
54 - 62 BHN |
AC/DC
(-)
Dia
Amps
(mm)
3.15
100-130
4.00
140-190
5.00
190-220
|
Suitable
to work on high carbona nd surfer steels without cracks, crane wheels,
drill bits, crusher hammers, sheer blades, rock drills, cane cutting
knives, impellers, oil expeller worms,conveyor buckets, prockets
etc. |
Ratna
HF
MN
|
A
hydrogen controlled, medium heavy coated hard facing electrode for
welding austenitic manganese steel components having 12% Mn. The
weld metal has 12% Mn and has work hardening properties under severe
impact. |
C
00.900
Mn
14.000
Si
0.550 |
Hardness
(initial)
200 - 240 BHN Work hardening 500-540 BHN |
AC/DC
(+)
Dia
Amps
(mm)
3.15
90-120
4.00
130-160
5.00
160-200
|
Suitable
for stone crushing jaws, buckets, excavator teeths, Mn steel rails,
austenitic manganese steel castings, hammers, crusher mental, etc. |
Ratna
HF5
|
A
hydrogen controlled, medium heavy coated hard facing electrode with
resistance to abrasion and friction between metal to metal.The electrode
gives smooth arc, low spatter, easy welding operation characteristics. |
C
0.2500
Mn
0.1500
Si
00.600
Cr
03.000 |
Hardness
54 - 60 HRC apx |
AC/DC
(+)
Dia
Amps
(mm)
3.15
100-130
4.00
140-170
5.00
170-210
|
Suitable
for resurfacing on mixtured blades worms of oil expellors, screw
conveyors, sheers, buckets and excavator teeths. |
Ratna
HF
SSN
|
A
heavy coated austenitic stainless steel electrode giving 19Cr-9Ni
- 6Mn. Electrode is used for joining as well as hard facing. Well
deposit work hardens under impact which allows abrasion resistant.
Slag is easy to remove and the weld bead is smooth and shining. |
C
00.090
Mn
06.000
Si
00.550
Cr
19.000
Ni
09.000
|
Hardness
(initial)
200 - 250 BHN Work hardens to 500
- 550 BHN |
AC/DC
(+)
Dia
Amps
(mm)
3.15
90-130
4.00
140-190
5.00
190-240
|
Suitable
for joining authentic stainless steel also for giving buffer layer
and build up layers on crusher hammers, pulverisers plough and rows,
dipper teeths, crusher hammers etc |