Changzhou WL Allotech Material Co.,Ltd
| Payment Terms | L/C, T/T |
| Supply Ability | 300 tons per month |
| Delivery Time | within 10 days |
| Packaging Details | 5kg each vacuum packing, a carton 4 packs a total of 20kg |
| Shape | Electrode |
| Certificate | ISO 9001 |
| Hardness | 27-40 HRC |
| Density | 8.33 g/cm3 |
| Dimensions | 3.2-6.0mm |
| Melting Range | 1295-1435 ºC |
| Test Report | Mill-certificate |
| Product name | Cobalt Base Electrode |
| AWS / ASME | A5.13 / SFA5.13 ECoCr-E |
| Material | Co Cr Mo C Ni Fe Si Mn |
| Equivalent | Stellite 21, BISHILITE (MHA) No.21, Weartech WT-21 |
| Application | Fluid valve seat, turbine blades, hot forging die etc |
| Brand Name | WL-ALLOTECH |
| Model Number | stellite 21 Electrode |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C, T/T | Supply Ability | 300 tons per month |
| Delivery Time | within 10 days | Packaging Details | 5kg each vacuum packing, a carton 4 packs a total of 20kg |
| Shape | Electrode | Certificate | ISO 9001 |
| Hardness | 27-40 HRC | Density | 8.33 g/cm3 |
| Dimensions | 3.2-6.0mm | Melting Range | 1295-1435 ºC |
| Test Report | Mill-certificate | Product name | Cobalt Base Electrode |
| AWS / ASME | A5.13 / SFA5.13 ECoCr-E | Material | Co Cr Mo C Ni Fe Si Mn |
| Equivalent | Stellite 21, BISHILITE (MHA) No.21, Weartech WT-21 | Application | Fluid valve seat, turbine blades, hot forging die etc |
| Brand Name | WL-ALLOTECH | Model Number | stellite 21 Electrode |
| Place of Origin | China | ||
| High Light | Welding Hard Facing Electrode ，Ecocr-E Hard Facing Electrode ，stellite 21 welding rod | ||
Stellite 21 Ecocr-E Welding Electrode - Cobalt Based Alloy Hard Facing Electrode Electrical Resistivity Heat Treatments
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.
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).
Common Names: Stellite 21, BISHILITE (MHA) No.21, Weartech WT-21
Standard:AWS / ASME: A5.13 / SFA5.13 ECoCr-E
Chemical Composition(%)
| Co | Cr | Mo | C | Ni | Others |
| Bal. | 26-29 | 4.5-6.0 | 0.20-0.35 | 2.0-3.0 | Fe, Si, Mn |
Physical Properties
| Hardness | Density | Melting Range |
| 27-40 HRC | 8.33 g/cm3 | 1295-1435 ºC |
Specification
| AWS / ASME: A5.13 / SFA5.13 ECoCr-E | |
| Metal to metal Wear | Excellent |
| Cold / Hot Abrasion | Good / Good |
| Erosion / Corrosion | Excellent / Excellent |
| Impact | Excellent |
| Magnetic | No |
| Deposit Layers | Multiple |
| 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.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 usd for applications involving cavitation, erosion, corrosion and/or high temperatures,
such as valve trim for petrochemical and power generation, biocompatible hip implant and denture alloy,
Fluid valve seat, turbine blades, hot forging die etc.
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 |
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter,Trading Company,Seller,Other
Year Established:
2009
Total Annual:
30000000-50000000
Employee Number:
50~100
Ecer Certification：
Verified Supplier
We produce high quality materials widely apply to oil & gas industry, mining operations, timber, glass industry, Chemical industry, powder generation, and so on. WL allotech continually develop our products offering with new alloy materials and capabilities to meet the critical changing dem... We produce high quality materials widely apply to oil & gas industry, mining operations, timber, glass industry, Chemical industry, powder generation, and so on. WL allotech continually develop our products offering with new alloy materials and capabilities to meet the critical changing dem...
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