Our main business:Metal powder,Electronic paste,Brazing materials,3D printing/VIGA equipment,R&D production and sales of customized products.
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Water&Gas Atomizer Line
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Plasma Atomizer Line
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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.
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T-800 is a cobalt-based wear-resistant alloy powder of the Co-Mo-Cr-Si system, part of the Tribaloy® series trademarked by Kennametal Stellite. It is designed for high-temperature wear and corrosion-resistant applications, featuring a high volume fraction of hard Laves intermetallic phase (Co₃Mo₂Si type) in a cobalt matrix.
Compared with T-400, T-800 contains significantly higher chromium (~18%) and silicon, delivering superior high-temperature oxidation resistance and hot-corrosion resistance up to 800–1000 °C, at the cost of lower toughness. It is the preferred grade for severe high-temperature, high-wear conditions.T-800 is the high-temperature workhorse of the Tribaloy family - harder, more oxidation-resistant than T-400, ideal for valve trim and extruder parts exposed to hot corrosive media up to 1000 °C.
Chemical Composition(wt%)
|
Element |
Co |
Cr |
Mo |
Si |
C |
Ni |
Fe |
|
Content(wt%) |
Bal. |
16.5–18.5 |
27–30 |
3-4 |
≤0.08 |
≤1.5 |
≤1.5 |
PTA Surfacing Hardness:52-58HRC
Performance Characteristics
-
Excellent high-temperature oxidation resistance up to 1000 °C, far above T-400
-
Superior hot corrosion resistance in sulfidizing / vanadium-containing environments
-
High hardness and abrasive wear resistance from Laves phase
-
Excellent galling resistance under dry, unlubricated sliding conditions
-
Note: higher chromium/silicon content → lower ductility and higher crack sensitivity; suitable for simple geometries and low-stress applications
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
-
High-temperature valves: gate/globe valve trim in high-temperature, highly corrosive media (steam, sour gas, molten salt)
-
Power & energy: boiler valve seats, turbine components, heat-exchanger parts
-
Petrochemical: pump shafts, plungers, valve internals in hot corrosive service
-
Extrusion machinery: extruder screws and barrels for high-temperature polymer processing
-
General industry: valve seats, seal rings, wear pads operating above 650 °C
Compare with T-800
|
Item |
T-400 |
T-800 |
|
Cr |
8.5% |
17.5% |
|
Mo |
28.0% |
28.5% |
|
HRC |
51–58 HRC |
54–62 HRC |
|
Toughness |
better |
brittle |
|
Applicable Scenarios |
Medium temperature, corrosion + dry grinding |
High temperature oxidation resistance, high hardness and wear resistance |
|
|
|
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)
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Certifications
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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.
