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