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ERCoCr-E Stellite 21 Hard Facing Rod Blue Color Make Various Liquid Valves Valve Seats
ERCoCr-E Stellite 21 Hard Facing Rod Blue Color Make Various Liquid Valves Valve Seats
ERCoCr-E Stellite 21 Hard Facing Rod Blue Color Make Various Liquid Valves Valve Seats
ERCoCr-E Stellite 21 Hard Facing Rod Blue Color Make Various Liquid Valves Valve Seats
Specifications
Brand Name :
WL-ALLOTECH
Model Number :
WL-Co21
Place of Origin :
China
MOQ :
5kg
Payment Terms :
L/C, T/T
Supply Ability :
300 tons per month
Delivery Time :
within 10 days
Packaging Details :
Each tube 5kg, 4 tubes pack in one carton
Price :
Negotiable
Product Name :
Stellite 21 Hard Facing Rod
Hardness :
HRC 20-40
Density :
8.33 g/cm3
Color :
Blue
Material :
C Si Mn Mo Cr W Ni Fe Co
Welding Current :
International Standard
Test Report :
Mill-certificate
Certificate :
ISO 9001
Diameter :
2.5-8.0mm
Length :
350mm 500mm 1000mm 2000mm 3000mm 4000mm
Process :
PTA / Laser Cladding / HVOF / Plasma Spray/ 3D Printing
Equivalent :
Stellite 21, BISHILITE (MHA) No.21, Weartech WT-21, Stoodite 21, POLYSTEL 21
Application :
make various liquid valves, valve seats Water turbine blade, hot forging die
Description

Stellite 21 ERCoCr-E Hard Facing Rod Blue Color Make Various Liquid Valves Valve Seats

Product Description

WL-Co21 (previously known as WL-Co8) was developed in the mid 1930s as a corrosion resistant CoCr alloy, and rapidly found application as a biocompatible hip implant and denture alloy. Many of the alloys currently used in medical applications are variants of the original WL-Co21 composition. It was also one of the first heat-resistant alloys trialled for use in jet engines.

WL-Co21 consists of a CoCrMo alloy matrix containing dispersed hard carbides which strengthen the alloy and increase its hardness, but also decrease the ductility. The type, shape, size, and distribution of the carbides is strongly influenced by the processing history of the alloy, and for this reason the mechanical properties of WL-Co21 are very dependent upon the manufacturing route and any subsequent heat treatments.

Due to the low volume fraction of carbides, the Co-based alloy matrix dominates the wear and corrosion properties. WL-Co21 has excellent cavitation, galling and metal-to-metal sliding wear resistance, but is not recommended for severe hard particle abrasion. The surface can work harden considerably during wear or even during machining, and the use of correct machining tools and techniques is important to achieve optimal results.

WL-Co21 has excellent resistance to thermal and mechanical shock. Optimum high temperature strength is obtained by solution heat treatments at 1200-1240ºC (2190 - 2265ºF) followed by quenching, and aging in the temperature range 7001150°C (1290-2100°F). WL-Co21 can be cast, powder metallurgically processed, or applied as a weld hardfacing. It 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. The oxyacetylene weld deposition method is not recommended for this alloy.

Common Names: Stellite 21, BISHILITE (MHA) No.21, Weartech WT-21, Stoodite 21, POLYSTEL 21

Standard: AWS 5.21-2001 ERCoCr-E

Chemical Composition(%)

C Si Mn Mo Cr W Ni Fe Co
0.25 1.50 ≤0.50 5.50 27.30 ≤0.50 2.00 1.50 Rest


Characterisitic

AWS / ASME: A5.21 / SFA5.21 ERCoCr-E
Metal to metal Wear Excellent
Cold / Hot Abrasion Good/Good
Erosion / Corrosion Excellent / Excellent
Impact Excellent
Deposit Cross Checks No
Magnetic No
Thermal Conductivity 14.5 W/m.K, 100.5 Btu-in/hr/ft2/°F
Electrical Resistivity 87.38 µ-ohm.cm, 34.4 µ-ohm.cm


Packing Details

For length 350mm 500mm pack in carton each 5kg
For 1000mm packing in 5kg tube, 4 tubes in one 20kg carton
For length more than 1000mm, pack in wooden box directlyERCoCr-E Stellite 21 Hard Facing Rod Blue Color Make Various Liquid Valves Valve Seats

Applications

Used to make various liquid valves, valve seats
Water turbine blade, hot forging die

Type We Could Offer

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

Product tags

stellite valve seat

,

valve seat material selection guide

,

valve seat inserts
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ERCoCr-E Stellite 21 Hard Facing Rod Blue Color Make Various Liquid Valves Valve Seats

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Product Detail
Brand Name :
WL-ALLOTECH
Model Number :
WL-Co21
Place of Origin :
China
MOQ :
5kg
Payment Terms :
L/C, T/T
Supply Ability :
300 tons per month
Contact Supplier
ERCoCr-E Stellite 21 Hard Facing Rod Blue Color Make Various Liquid Valves Valve Seats
ERCoCr-E Stellite 21 Hard Facing Rod Blue Color Make Various Liquid Valves Valve Seats

Changzhou WL Allotech Material Co.,Ltd

Verified Supplier
3 Years
jiangsu, changzhou
Since 2009
Business Type :
Manufacturer, Distributor/Wholesaler, Exporter, Trading Company, Seller, Other
Main Products :
Hard Facing Rod & Powder, Special Alloy, Hard Facing Electrode
Total Annual :
30000000-50000000
Employee Number :
50~100
Certification Level :
Verified Supplier
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