Cobalt-Based Alloy Powder
Co-Cr-W Stellite-equivalent powders for extreme wear and high-temperature service.
Cobalt-based alloy powders are produced with cobalt as the matrix, alloyed with chromium, tungsten, nickel and carbon. They are designed for the most demanding applications requiring a combination of high-temperature hardness, fatigue resistance, cavitation resistance and corrosion resistance.
Equivalent in performance to the well-known Stellite 6, 12 and 21 grades, our cobalt-based powders are widely applied via PTA welding, laser cladding, HVOF and oxy-acetylene spray-fuse processes for valve seats, exhaust valves, turbine components and hot extrusion tooling.
Their unique combination of metal-to-metal wear resistance, galling resistance and oxidation resistance at elevated temperatures makes them indispensable in oil & gas, power generation and aerospace repair applications.
Key Attributes
- Manufacture Process Gas Atomized / Inert Atomization
- Particle Size 15-45um, 20-53um, 45-90um, 53-125um
- Grade Series NE-Co
- Brand NE Tool
- Application Process HVOF, APS, Laser Cladding, PTA Welding, OFS
Cobalt-Based Alloy Powder - Grade Selection
9 grades available in this series. Custom particle-size cuts and chemistries available on request.
| Product Grade | Chemical Composition | Manufacturing Process | Hardness (HRC) | Application Process | Typical Application |
|---|---|---|---|---|---|
| NE-Co-01 | C:2.0-2.5, Cr:28-32, W:8-10, Si:1.0, Fe:<=3.0, Ni:<=3.0, Mn:<=2.0, Co:Bal | Gas Atomization | 50-60 | OFS/PTA/HVOF | High-wear parts, valve seats, cutting edges, crushers, hot dies |
| NE-Co-06 | C:0.8-1.2, Cr:28-32, W:3-6, Si:1.0, Fe:<=3.0, Ni:<=3.0, Mn:<=2.0, Co:Bal | Gas Atomization | 38-45 | OFS/PTA/HVOF | General wear hardfacing, valve seats, bearings, pumps, paper mill rolls |
| NE-Co-12 | C:1.0-1.5, Cr:28-30, W:7-9, Si:1.0, Fe:<=3.0, Ni:<=3.0, Mn:<=2.0, Co:Bal | Gas Atomization | 44-50 | OFS/PTA/HVOF | High-temperature valves, extrusion dies, exhaust valves, hot work tooling |
| NE-Co-21 | C:0.15-0.45, Cr:25-30, Ni:1.5-4.0, Mo:4.5-7.0, Si:1.0, Fe:<=3.0, Mn:<=1.5, Co:Bal | Gas Atomization | 33-37 | OFS/PTA/HVOF | Anti-galling valves, corrosion-resistant chemical parts, pump sleeves |
| NE-Co-156 | C:1.5-1.6, Cr:25-28, W:7-8, Si:0.5-1.0, Fe:<=2.0, Ni:2.5-3.0, Co:Bal | Gas Atomization | 42-48 | OFS/PTA/HVOF | Heavy-duty valve seats, hot shear blades, pump shafts |
| NE-Co-F01 | Cr25.5; W12.5; C1.9; Others<5; Co:Bal | ESR + Directional Solidification | 48-54 | OFS/PTA/CAW | Premium critical wear parts, aerospace valve components |
| NE-Co-F06 | C1.15; Si1.00; Mn<=1.0; Mo<=1.0; Cr29.00; W4.50; Ni<=3.0; Fe<=3.0; Co:Bal | ESR + Directional Solidification | 40-45 | OFS/PTA/CAW | Premium general hardfacing, high-demand valve seats |
| NE-Co-F12 | C1.4; Si1.2; Mn<=1.0; Mo<=1.0; Cr29.0; W8.0; Ni<=3.0; Fe<=3.0; Co:Bal | ESR + Directional Solidification | 44-50 | OFS/PTA/CAW | Premium high-temp wear parts, turbine components |
| NE-Co-F21 | C0.20; Si0.90; Mn<=1.5; Mo5.50; Cr27.00; W0.50; Ni3.50; Fe<=2.0; Co:Bal | ESR + Directional Solidification | 32-40 | OFS/PTA/CAW | Premium anti-corrosion & anti-galling critical parts |
How to Specify & Apply
Identify the Service Envelope
Determine the dominant wear mode (abrasion, erosion, adhesion, corrosion, oxidation), operating temperature and impact load. This narrows the grade selection to 2-3 candidates.
Match the Process
Each grade is validated for specific deposition processes. The "Application Process" field above shows HVOF, HVAF, APS, PTA, LMD, OFS or CAW compatibility.
Choose the Particle Size
Particle size controls deposit density and surface finish. Fine cuts (15-30um) for thin dense coatings; coarser cuts (45-90um) for thick build-up and high deposition rate.
Request a Sample
Most grades ship with a 1-2 kg sample for in-house process qualification. Our engineers will support parameter development on your equipment.
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