Cobalt Based Alloy Powder Stellite 1 Hardfacing Welding Powder for Valve Seats
Properties: Wear resistance and thermal conductivity
Application: Valve seat insets, bearing, sawteeth, rotary ring, Pump Sleeves
WLCo-1 is a cobalt based welding powder that has the highest hardness and wear resistance of the standard cobalt alloys. WLCo-1 is used in elevated temperature, high wear applications. Exceptional resistance to metal-to-metal wear in corrosive media at high temperatures. It is a hardfacing alloy possessing excellent abrasion and corrosion resistance for applications such as pump sleeves, rotary seal rings, wear pads, expeller screws and bearing sleeves. It retains its hardness at temperatures in excess of 760°C (1400°F).
Common Names: Stellite 1 Polystel 1
Standard: AWS 5.21-2001 Mil-R-17131C ERCoCr-C Mil-CoCr-C
|
C |
Si |
Mn |
Mo |
Cr |
W |
Ni |
Fe |
Co |
|
2.5 |
1.00 |
≤1.00 |
≤1.00 |
29.00 |
12.5 |
≤3.00. |
≤3.00 |
Rest |
180/53, 180/63, 150/45, 150/63, 150/53, 125/38, 250/45, 45/20, 53/20
|
Abrasion Resistance |
Excellent |
|
Impact Resistance |
Moderate |
|
Corrosion Resistance |
Good |
|
Hardness |
HRC 50-60 |
|
Deposit Layers |
2 Max |
|
Deposit Cross Checks |
Possible |
|
Magnetic |
No |
|
Hot Wear Hardness |
Excellent |
|
Machineability |
Difficult |
Each bottle 5kg/bottles, 5 bottles pack in one carton,then put cartons onto pallet or Box. OEM packing & label or customized packing methods available.

Valve(Valve Seats, Seals, Gates)
Sleeve (Bushings), Bearing
CuttingSaw Blades, Screw blade, Cutters
Extrusion & Dies
Crusher & Mixer
Wear Pads, Seaming Rolls
|
Trademark |
Nominal Chemical Composition |
HRC |
Application |
|||||||||
|
C |
Cr |
Si |
W |
Ni |
Fe |
Mn |
Mo |
Co |
B |
|||
|
WL Co1 |
2.45 |
30.0 |
1.0 |
13.0 |
≤3.0 |
≤3.0 |
≤1.0 |
≤1.0 |
Bal. |
|
50-58 |
Valve seat insets, bearing, sawteeth, rotary ring, Pump Sleeves |
|
WL Co3 |
2.4 |
30.5 |
1.0 |
13.0 |
≤3.0 |
≤3.0 |
≤1.0 |
≤1.0 |
Bal. |
|
50-56 |
Valve seat insets,steel mill guide roll, wearing panel of cracker blade, etc. |
|
WL Co4 |
1.0 |
31.0 |
1.0 |
14.0 |
≤3.0 |
≤1.0 |
≤0.5 |
≤0.5 |
Bal. |
|
45-50 |
Hot extrusion die, dry battery industry |
|
WL Co6 |
1.2 |
29.0 |
1.0 |
4.5 |
≤3.0 |
≤3.0 |
≤1.0 |
≤1.0 |
Bal. |
|
40-46 |
Engine valve, high temperature valve, turbine blade |
|
WL Co12 |
1.4 |
30.0 |
1.3 |
8.5 |
≤3.0 |
≤3.0 |
≤1.0 |
≤1.0 |
Bal. |
|
44-50 |
Pressure valves, sawteeth screw fights |
|
WL Co20 |
2.5 |
32.0 |
1.0 |
17.0 |
≤3.0 |
≤3.0 |
≤0.5 |
≤1.0 |
Bal. |
|
54-59 |
Wear plate, bearing sleeve, etc. |
|
WL Co21 |
0.2 |
27.0 |
1.0 |
0.2 |
≤3.0 |
≤2 |
≤1.0 |
≤5.5 |
Bal. |
|
20-40 |
Fluid valve seat, turbine blades, hot forging die |
|
WL Co25 |
0.05 |
20.0 |
1.0 |
15.0 |
10.0 |
≤2.0 |
≤1.5 |
≤1.0 |
Bal. |
|
24 |
High temperature and corrosion-resistant valve sealing surface, pressure casting dies, etc. |
|
WL Co31 |
0.5 |
26.0 |
1.0 |
7.5 |
10.0 |
≤3.0 |
≤1.0 |
≤1.0 |
Bal. |
|
30-35 |
Extrusion die, steam turbine blade, etc. |
|
WL Co32 |
1.8 |
26.0 |
1.2 |
12.0 |
22.0 |
≤1.5 |
≤0.5 |
≤1.0 |
Bal. |
|
40-45 |
Engine inlet and exhaust valve |
|
WL Co190 |
3.2 |
26.0 |
1.0 |
14.0 |
≤1.0 |
≤3.0 |
≤1.0 |
≤1.0 |
Bal. |
|
54-60 |
Petroleum drill bit, mining industry |
|
WL CoT400 |
0.08 |
8.5 |
2.6 |
|
1.5 |
≤1.5 |
≤1.0 |
28 |
Bal. |
0.8 |
50-60 |
Valve and roller path, plastic extruder in strongly corrosive |
|
WL CoT800 |
0.08 |
18.0 |
3.4 |
|
≤1.5 |
1.5 |
≤1.0 |
28 |
Bal. |
0.8 |
52-58 |
Valve and roller path, plastic extruder in strongly corrosive |