Description
Overview Of HA 188
HA188 is a cobalt-based high-temperature alloy designed for exceptional thermal strength, oxidation resistance, and corrosion tolerance in extreme environments.
Powder Chemical Composition(wt,-%)
| Element | C | Cr | Ni | Co | W | Fe |
| wt% | 0.05-0.15 | 20.00-
24.00 |
20.00-
24.00 |
Bal | 13.00-16.00 | ≤3.00 |
| Element | B | La | Mn | Si | P | S |
| wt% | ≤0.015 | 0.03-0.12 | ≤1.25 | 0.20-0.50 | ≤0.02 | ≤0.015 |
| Element | Cu | O | N | – | – | – |
| wt% | ≤0.07 | ≤0.025 | ≤0.015 |
– |
– | – |
Physical Properties
| Size | Particle size distribution | Hall flow rate | Bulk density | Tap density | ||
| D10(μm) | D50(μm) | D90(μm) | ||||
| 15-53μm | ≥15 | 30-40 | ≤60 | ≤25s/50g | ≥4.80g/cm³ | ≥5.30g/cm³ |
Mechanical Properties
| Measuring temperature | Tensile strength
(Ob/Mpa) |
Yield strength
(Opo.2/Mpa) |
Elongation at break(δ5/%) |
| 25℃ | ≥900 | ≥400 | ≥45 |
| 650℃ | ≥650 | ≥280 | ≥50 |
| 900℃ | ≥300 | ≥240 | ≥50 |
| 950℃ | ≥200 | ≥170 | ≥50 |
| 1000℃ | ≥160 | ≥130 | ≥50 |
Heat Treatment Recommendation
Solution Heat Treatment:1180±20℃/1H/AC
Advantages
● Outstanding high-temperature strength up to 900°C.
● Superior Oxidation resistance and corrosion resistance in extreme environments.
● Good weldability and machinability.
● Compatibility with powder metallurgy techniques (e.g., SLM, EBM).
Primary Applications
● Aerospace: Turbine blades, nozzles, and combustion chamber components.
● Energy: Gas turbines, steam turbines, and heat exchangers.
● Petrochemical industry: Reactors, headers, and high-temperature pipelines.
● 3D Printing (AM): Additive manufacturing for complex gas-turbine parts.
