Our main business:Metal powder,Electronic paste,Brazing materials,3D printing/VIGA equipment,R&D production and sales of customized products.
7x24 hours delivery
7x24 hours delivery capacity,is the best partner for enterprise globalization
3
VIGA Lines
1
Water&Gas Atomizer Line
1
Plasma Atomizer Line
236M
Projects Completed
Hunan Mana Materials Technology Co.,Ltd. is located in Changsha city,Hunan province,China ,which is the hometown of non-ferrous metals.Mana is a technology enterprise focusing on the research and development,production and sales of new materials.At present, the main products on sale include electronic paste, metal powders, brazing materials,3D printing/VIGA equipment,R&D production and sales of customized products. With more than ten years of metal powder manufaturing technology and experience, we provide highly competitive high-quality products.
01
High Quality
02
Advanced Equipment
03
Professional Team
04
Custom Service
Co21 is a low-carbon, cobalt-chromium-molybdenum (Co-Cr-Mo) based alloy powder. Unlike the cobalt-chromium-tungsten (Co-Cr-W) systems found in Stellite 6, 12, or 20, Co21 utilizes molybdenum (Mo) in place of tungsten (W) and features a very low carbon content. It offers exceptional toughness, resistance to cavitation, galling, and severe corrosion, while also demonstrating excellent thermal shock and impact resistance; its hardness increases following cold working. While not suited for applications involving intense abrasive wear from hard particles, it is primarily designed for environments characterized by cavitation, erosion, metal-to-metal sliding wear, and high-temperature corrosion. It is frequently used for surface strengthening-via hardfacing or cladding-of components such as turbine blades, fluid control valves, and hot-forging dies.
Chemical Composition(wt%)
|
Element |
C |
Cr |
Mo |
Si |
W |
Ni |
Fe |
Mn |
Co |
|
Content(wt%) |
0.20–0.35 |
26-29 |
4.5-6 |
1.8-2.2 |
≤0.15 |
2-3 |
≤2 |
≤1 |
Bal. |
PTA Surfacing Hardness: 20HRC
Performance Characteristics
- Excellent resistance to cavitation, erosion, and galling (adhesive wear)
-
Resistant to reducing-environment corrosion, wet corrosion, and acidic media (superior corrosion resistance compared to cobalt-chromium-tungsten alloys)
-
High toughness with excellent resistance to thermal and mechanical shock; highly resistant to cracking
-
Excellent machinability; suitable for multiple rounds of weld overlay (hardfacing)
Recommended Process
|
Process |
Particle Size |
|
HVOF (High-Velocity Oxy-Fuel) thermal spraying |
15–45 μm |
|
Plasma spraying (APS) |
45–105 μm |
|
PTA Plasma Surfacing |
45–150 μm |
|
Laser Cladding |
45–150 μm |
Atomization process: Nitrogen atomization
Typical Application Areas
-
Turbine blades and steam turbine components
-
Various fluid valves, valve seats, and valve cores (for chemical, power generation, and oil & gas industries)
-
Hardfacing repair for hot-forging and hot-stamping dies
-
Pump casings and impellers (for cavitation and erosion resistance)
-
Sliding seals for service in seawater or acidic media
Comparation
|
Item |
HRC |
Features |
Applicable Scenarios |
|
Co-06 |
38–44 |
Excellent toughness, combined with wear resistance and resistance to galling (seizure) |
Valves, bushings, and erosion-prone components |
|
Co-12 |
42–48 |
Balanced wear resistance + a certain degree of impact resistance |
High-temperature valves, saw teeth, screws |
|
Co-20 |
52–57 |
Extremely resistant to abrasive wear; highly brittle. |
Wear-resistant plates, sleeves, and components subject to slurry erosion |
|
Co-21 |
20–28 |
High toughness, cavitation resistance, and corrosion resistance |
Turbine blades, hot forging dies, and cavitation-prone pump components |
|
|
|
Cobalt Alloy Powder Grade |
|
||||||||
|
Model |
HRC |
Wt% |
Typical uses |
||||||||
|
C |
Cr |
Si |
W |
Ni |
Fe |
Mn |
Mo |
Co |
|||
|
Co1 |
48-54 |
2.5 |
30 |
1 |
12 |
≤3 |
≤3 |
≤1 |
≤1 |
Bal |
Valve seats, bearings, knife edges, etc. |
|
Co3 |
48-54 |
2.3 |
30 |
1 |
12 |
≤3 |
≤3 |
|
|
Bal |
Needle valve seat, valve seat, rolling mill guide roll |
|
Co6 |
38-44 |
1.2 |
30 |
1 |
4.5 |
≤3 |
≤3 |
≤1 |
≤1 |
Bal |
Engine valves, high-temperature and high-pressure valves, turbine blades |
|
Co12 |
42-48 |
1.4 |
30 |
1.4 |
8.5 |
≤3 |
≤3 |
≤1 |
≤1 |
Bal |
High-temperature and high-pressure valves, saw teeth, spiral push rods, etc. |
|
Co20 |
52-57 |
2.5 |
32 |
1 |
18 |
≤3 |
≤3 |
≤1 |
≤1 |
Bal |
Bearing sleeve, wear-resistant plate |
|
Co21 |
20 |
0.2 |
28 |
2 |
0.15 |
≤3 |
2 |
≤1 |
5.5 |
Bal |
Turbine blades, various liquid valves, valve seats |
|
Co25 |
≤24 |
0.1 |
20 |
1 |
15 |
10 |
≤3 |
≤2 |
|
Bal |
Stamping and extrusion dies |
|
Co31 |
28-34 |
0.5 |
26 |
1 |
8 |
10.5 |
2 |
≤1 |
|
Bal |
Extrusion die, gas turbine blade |
|
Co156 |
43 |
1.6 |
28 |
1.15 |
4.5 |
3 |
0.05 |
1 |
1 |
Bal |
High-temperature and high-pressure valves, hot forging dies |
|
Co157 |
50-56 |
0.1 |
22 |
1.5 |
5 |
≤3 |
≤3 |
≤0.5 |
≤1 |
B:2.5 |
Motorcycle valve top |
|
Co158 |
40-46 |
0.8 |
29 |
1.5 |
5.5 |
≤3 |
≤3 |
≤1 |
≤1 |
B:0.8 Bal |
High-temperature and high-pressure valves, saw teeth, spiral push rods, etc. |
|
CoX40 |
34 |
0.85 |
25 |
0.3 |
7.5 |
10 |
1 |
0.3 |
|
Bal |
Stamping and extrusion dies for gas turbines |
|
CoT400 |
50-60 |
0.08 |
8.5 |
2.6 |
|
1.5 |
1.5 |
|
28.5 |
Bal |
Gate valves used in high-temperature and highly corrosive media, extruders |
|
CoT800 |
52-58 |
0.08 |
18 |
3.4 |
|
1.5 |
1.5 |
|
28.5 |
Bal |
Gate valves used in high-temperature and highly corrosive media, extruders |
|
CoF |
38-44 |
1.7 |
26 |
1.2 |
12 |
22 |
≤3 |
≤1 |
≤1 |
Bal |
Engine intake and exhaust valves |
Application
Additive manufacturing
Powder metallurgy(PM)
Metal injection moldinb(MIM)
Our Testing Equipment
Our factory & quipment
Our factory & Office
Certifications
Our Packing
FAQ
Q: What is MIM feedstock?
A: MIM feedstock is compound of metal powder + polymer binder. It is the raw pellet material fed directly into injection molding machine for MIM production.
Q: What debinding type should I choose for 316L MIM feedstock?
A: Catalytic debind is preferred for mass production. Thermal debind is better for small batches. We can adjust formula based on your furnace.
Q: Can I get free sample?
A: We offer trial samples for process evaluation. Please contact our sales team for sample quotation.
Q: Is 316L MIM material corrosion resistant?
A: Yes. Sintered 316L MIM parts have excellent resistance against salt water, acid and humid environment.
Hot Tags: co-21 cobalt alloy powder, China, suppliers, factory, customized, price, cheap, for coating, for 3D printing
