Beijing Hownew Energy Technology Group Co., Ltd vincent@hownewenergy.com 86-10-53681027
Haynes 230 is a Ni-Cr-based solid solution strengthened, deformable high-temperature alloy used at temperatures below 900°C. The alloy contains a significant amount of tungsten and small amounts of aluminum and titanium. It exhibits high ductility and moderate high-temperature strength, along with excellent oxidation resistance and good stamping and welding processability. It is widely used in the aviation and energy industries.
For example, it is used in combustion chambers, transition ducts, flame stabilizers, thermocouple protection sheaths, and other gas turbine components. In the chemical industry, Haynes 230 alloy is used to manufacture catalyst grid frames for nitrogen burners, high-strength thermocouple protection tubes, high-temperature heat exchangers, pipelines, and high-temperature corrugated tubes. It combines the strength, stability, oxidation resistance, thermal cycling resistance, machinability, resistance to grain coarsening at sustained high temperatures, and relatively low thermal expansion characteristics of many high-temperature alloys.
Grades
| China Grade | American JNS | American ASTM |
| GH3230/GH230 | JNS N06230 | |
| Germany DIN | Universal grade | France |
| 2.4733 | Haynes 230 |
chemical composition
| C | Si | Mn | F | S | Cr | Ni | Mo | Cu |
| 0.05-0.15 | 0.25 | 0.3 | 0.035 | 0.03 | 20.0-24.0 | Balance | 1.0-3.0 | |
| Other | N | Al | Ti | Fe | Co | La | W | B |
| 0.2-0.50 | 0.5 | 3 | 3 | 0.01-0.08 | 13.0-15.0 | 0.015 |
physical property
| Density g/cm³ | melting point ℃ | Thermal conductivity (W/m·℃ | Specific heat capacity J/Kg·℃ | Elastic modulus GPa | linear expansion coefficient a/10-6℃-1 |
| 8.89 | 1352-1375 | 11.7(100℃) | 400 | 203 | 12.25(20~100℃ |
Application Fields
The combined properties of Haynes 230 alloy make it highly suitable for a variety of applications in the aerospace and power generation industries. It is used in components such as combustion cans, transition ducts, flame holders, thermocouple sheaths, and other critical gas turbine components. In the chemical processing industry, Haynes 230 alloy is used in ammonia burners, high-strength thermocouple protection tubes, high-temperature heat exchangers, pipelines, high-temperature corrugated tubes, and various other key internal components for catalyst grid carriers.
In the industrial heating sector, applications of Haynes 230 alloy include furnaces, chains and fixtures, burner flame hoods, internal components of heat exchangers, dampers, internals of nitriding furnaces, heat treatment baskets, furnace grates, trays, distributor tubes, thermocouple protection tubes, internals of cyclones, and many more.
