WD-Co21
PRODUCT
INTRODUCTION
WISDOM WD-Co21 is recommended for applications involving cavitation, erosion, corrosion and/or high temperatures, such as valve trim for petrochemical and power generation. Due to its good impact resistance, it has been widely used in the building up of forging or hot stamping dies.
Common Names: Stellite 21, Bishilite No.21, Polystel 21
Standard: AWS 5.21-2001 ERCoCr-E
CHEMICAL COMPOSITION(%)
C |
Si |
Mn |
Mo |
Cr |
W |
Ni |
Fe |
Co |
---|---|---|---|---|---|---|---|---|
0.25 |
1.5 |
≤0.5 |
5.5 |
27.3 |
≤0.5 |
2.0 |
1.5 |
Rest |
CHARACTERISTIC
Abrasion Resistance |
Moderate |
Impact Resistance |
Excellent |
Corrosion Resistance |
Good |
Hardness |
HRC 20-40 |
Deposit Layers |
Multiple |
Deposit Cross Checks |
No |
Magnetic |
No |
Hot Wear Hardness |
Good |
Machinability |
Carbide Tools |
Length (mm)
350, 500, 1000, 2000 or customized
Other Forms
Powder, Electrode
PRODUCTION PROCESS
Smelting
Horizontal continuous casting
Cooling
Straightening
Cutting
WELDING PROCESS
OAW (OXY, OFW)
TIG (GTAW)
ERW(Electric Resistance Welding)
Other Automation System
Robotic
APPLICATION
liquid valves
Water turbine blade
Hot forging die
Hot shear
PACKING AND SHIPPING
Packaging
For different forms we use different packing as pictures below
![]() |
![]() |
![]() |
1meter pack in 5kg per tube | 4 tubes in one carton | Exporting wooden box |
![]() |
![]() |
![]() |
350mm length packing | 350mm carton packing | 2 meter length packing |
Label
WISDOM Brand, Neutral or Customized
Lead time
Less than 500kg: 7-10 working days
500-1000kg: 10-15 working days
More than 1000kg: 15-20 working days
Delivery
Courier/Air/Sea
Please Feel free to give your inquiry in the form below.We will reply you in 24 hours.