Stellite 6 Bishilite No. 6 Welding Electrode - Cobalt Based Alloy
Hard Facing Electrode High Temperature Valve
Product Description
WL-Co6 is the most widely used of the wear resistant cobalt-based
alloys and exhibits good all-round performance. It is regarded as
the industry standard for general-purpose wear resistance
applications, has excellent resistance to many forms of mechanical
and chemical degradation over a wide temperature range, and retains
a reasonable level of hardness up to 500°C (930°F). It also has
good resistance to impact and cavitation erosion. WL-Co6 is ideally
suited to a variety of hardfacing processes and can be turned with
carbide tooling. Examples include valve seats and gates, pump
shafts and bearings, erosion shields, and rolling couples. It is
often used self-mated.
Common Names: Stellite 6, Polystel 6, Hoganas 2537
Standard:AWS / ASME: A5.13 / SFA5.13 ECoCr-A
Chemical Composition(%)
Co | Cr | W | C | Ni | Mo | Others |
Bal. | 27-32 | 4-6 | 0.9-1.4 | <3.0 | <1.0 | Fe, Si, Mn |
Physical Properties
Hardness | Density | Melting Range |
| 36-45 HRC | 8.44 g/cm3 | 1285-1410 ºC |
Specification
AWS / ASME: A5.13 / SFA5.13 ECoCr-A |
| Metal to metal Wear | Excellent |
| Cold / Hot Abrasion | Good / Good |
| Erosion / Corrosion | Excellent / Excellent |
| Impact | Excellent |
| Magnetic | No |
| Deposit Layers | 2 Max |
| Thermal Conductivity | 14.82 W/m.K, 102.7 Btu-in/hr/ft2/°F |
| Electrical Resistivity | 106 μ-ohm.cm, 41.7 μ-ohm.inch |
Packing Details
For length 350mm 5kg per Vacuum Pack, 1 Vacpak inside a Carton
a carton 4 packs a total of 20kg, then put them in wooden boxes or trays.
Packaging details can also be customized according to customer
requirements.
Applications
Used to Engine valve, high temperature valve, turbine blade
Type We Could Offer
| Trademark | Nominal Chemical Composition | HRC | Application | Reference Standard |
| C | Cr | Si | W | Ni | Fe | Mn | Mo | Co | others |
| WL Co1 | 2.1 | 30.0 | 1.0 | 14.0 | ≤3.0 | ≤5.0 | ≤2.0 | ≤1.0 | Bal. | <1.0 | 48-54 | Valve seat insets, bearing, sawteeth, rotary ring, Pump Sleeves | Stellite 1, ECoCr-C |
| WL Co6 | 1.0 | 29.0 | 1.0 | 4.5 | ≤3.0 | ≤5.0 | ≤2.0 | ≤1.0 | Bal. | <1.0 | 38-44 | Engine valve, high temperature valve, turbine blade | Stellite 6, ECoCr-A |
| WL Co12 | 1.4 | 30.0 | 1.4 | 8.5 | ≤3.0 | ≤5.0 | ≤2.0 | ≤1.0 | Bal. | <1.0 | 44-50 | Pressure valves, sawteeth screw fights | Stellite 12, ECoCr-B |
| WL Co21 | 0.2 | 28.0 | 1.0 | | ≤3.0 | ≤5.0 | ≤2.0 | 5.5 | Bal. | <1.0 | 20-40 | Fluid valve seat, turbine blades, hot forging die | Stellite 21, ECoCr-E |
| WL Co25 | 0.15 | 20.0 | 1.0 | 14.0 | 10.0 | ≤5.0 | ≤2.0 | ≤1.0 | Bal. | <1.0 | 22-40 | High temperature and corrosion-resistant valve sealing surface,
pressure casting dies, etc. | Stellite 25 |
