For
Build up
|
Shield
alloy Grade
|
Applications
|
Optium
Current
|
Typical
Mechanical & Physical Properties |
Impact
Resistance
|
Abrasion
Resistance
|
*
Weight Loss
|
551
|
Premium Alloy for
build up of managanese steels
Typical Applications :
Crusher Rolls, Impact
Hammers, Impactor bars,
Gyratory cones, Bucket
teelh, Rail road frogs, Rail
Road Crossings.
|
Diameter
3.15
4.00
5.00
Polarity :
Prefered:
|
Amps
90
150
200
DC ± AC
DC +
|
Tensile Strenght :
91.40 kg/mm2
Yield Strogth : 66 kg/mm2
Elongation : 40% Elongation
Hardness : As Deposited : 18-22Rc
Work : 50-55 Rc
Cannot be flame cut.
Machineability : Difficult |
Excellent
|
Fair
|
2.5 gms.
|
881
|
For Build up of
carbon and low alloy steels Typical
Applications :
Steel mill wobblers,
Coupling boxes, Tractor
Rollers, Mine car wheels
Gear teeth
|
Diameter
3.15
4.00
5.00
Polarity :
Prefered:
|
Amps
120
170
220
DC ± AC
DC +
|
Typical
hardness : RC
| No. If layers |
On C – 1020
base |
| 1 |
17 - 20 |
| 2 |
25 – 30 |
Can be flame cut
Machineability : good |
|
Very good |
Fair |
2.4 gms |
For
Hard Surfacing
|
540
|
For hard facing of
carbon
and alloy steel parts
Typical Applicatins :
Machine components, Tools
Silding Metal Parts |
Diameter
3.15
4.00
5.00
Polarity :
Prefered:
|
Amps
110
180
210
DC ± AC
DC +
|
Typical
hardness RC |
Good
|
Good
|
2.1 gms
|
No. If layers
|
On C – 1020 base
|
1
|
30 - 35
|
2
|
35-40
|
Can
be flame cut
Machineability : good |
550
|
Suitable of heavy abrasive
wear at moderately high
temperature.
Typical Applications :
Final overlay on crusher
rolls, Hammer mill hammers
Bucket teeth, Coke pusher
stockes, Augers, Muller tires, |
Diameter
3.15
4.00
5.00
Polarity:
Prefered:
|
Amps
120
155
190
DC ± AC
DC +
|
Typical
hardness : RC |
Fair
|
Very Good |
0.8 gms. |
No. if layers
|
On C-1020 base
|
Hadfield
|
1
|
58
|
50
|
2
|
57
|
55
|
3
|
54
|
56
|
| Max.
hot hardness to 1200 F. |
Cannot
be flame cut.
Machineability grinding only
Tickness : 3-5 layers max.,
Relief checks. |
558
|
Suitable for
externely severe
abrasion with lower impact
resistance
than # 550 due to frequent
relief checks
Typical Applications :
Same as above, Alsofor Fan
blades, Dredge Cutter heads,
Tamping tools, Screw
Conveyors |
Diameter
3.15
4.00
5.00
Polarity:
Prefered:
|
Amps
120
155
190
DC ± AC
DC +
|
Typical
hardness : RC |
Poor |
Excellent |
0.2 gms. |
No. if
layers
|
On C-1020 base
|
Hadfield
|
1
|
54
|
43
|
2
|
55
|
50
|
3
|
56
|
54
|
| Max.
hot hardness to 1200 F. |
Cannot
be flame cut.
Machineability grinding only
Tickness : 3-5 layers max.,
Relief checks. |
