Stellite 12 ECoCr-B Electrode - Cobalt Based Alloy Hard Facing
Electrode Wear Hard Facing Electrode
Product Description
WL-Co12 could be considered an intermediate alloy between WL-Co6
and WL-Co1. It contains a higher fraction of hard, brittle carbides
than WL-Co6, and has increased resistance to lowangle erosion,
abrasion, and severe sliding wear whilst retaining reasonable
impact and cavitation resistance. WL-Co12 is often used self-mated
or running against WL-Co6 or WL-Co1. The higher tungsten content
provides better hightemperature properties compared to WL-Co6, and
it can be used at temperatures up to about 700˚C.
WL-Co12 is typically used for cutting tools that need to withstand
abrasion, heat and corrosion. Examples include industrial knives
for cutting carpets, plastics, paper and synthetic fibres; and saw
tips in the timber industry. It is also used for control plates in
the beverage industry, pump vanes, bearing bushes and narrowneck
glass mold plungers; and for hardfacing of engine valves, pinch
rollers in the metal-processing industries, and rotor blade edges
Common Names: Stellite 12, BISHILITE (MHA) No.12, Weartech WT-12
Standard:AWS / ASME: A5.13 / SFA5.13 ECoCr-B
Chemical Composition(%)
Co | Cr | W | C | Ni | Mo | Others |
Bal. | 27-32 | 7.5-9.5 | 1.4-1.7 | <3.0 | <1.0 | Fe, Si, Mn |
Physical Properties
| Density | Melting Range |
45-51 HRC | 8.53 g/cm3 | 1200-1365 ºC |
Specification
AWS / ASME: A5.13 / SFA5.13 ECoCr-B |
Metal to metal Wear | Excellent |
Cold / Hot Abrasion | Excellent / Excellent |
Erosion / Corrosion | Excellent / Excellent |
Impact | Good |
Magnetic | No |
Deposit Layers | 2 Max |
Thermal Conductivity | 14.6 W/m.K, 100 Btu-in/hr/ft2/°F |
Electrical Resistivity | 98 µ-ohm.cm, 38.6 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
It is used for industrial knives for cutting carpets, plastics,
paper and synthetic fibres; and saw tips in the timber industry,
control plates in the beverage industry, pump vanes, bearing bushes
and narrowneck glass mold plungers; and for hardfacing of engine
valves, pinch rollers in the metal-processing industries, and rotor
blade edges.
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 |
