C103 Niobium Alloy plate
Description of C-103 alloys
C103 is the most widely used superalloy in the aviation industry. For instance, the rocket nozzles on the lunar module and command module of the Apollo spacecraft were constructed of the C-103 alloy (Nb-10Hf-1Ti-0.7Zr).
The combustion products flow through the nozzle at a high velocity (maximum Mach 4.58) and at wall temperatures of 1500 degrees Celsius.
Niobium C-103 Alloy Properties (Theoretical)
| Compound Formula | Nb/Hf/Ti |
|---|---|
| Appearance | Metallic solid in various forms |
| Melting Point | 2350 ± 50°C |
| Boiling Point | N/A |
| Density | 8.85 g/cm3 |
| Solubility in H2O | N/A |
| Electrical Resistivity | 0.0000313 - 0.0000352 ω-cm |
| Specific Heat | 0.082 BTU/°F/lb |
| Thermal Conductivity | 22.0 Btu/hr - ft2 - °F/ft (1600 °F) |
| Thermal Expansion | 3.9 in/in/°F (400 °F) |
| Monoisotopic Mass | 320.801 g/mol |
The most popular alloy in the US is C103 Niobium Alloy Plate (Nb-10Hf-1Ti-0.5Zr). A temperature range of 1200 to 1400 degrees Celsius is appropriate for operation. It falls under the umbrella of Niobium alloys with poor strength.
More than 90% of all niobium alloys used in the United States are medium-high strength niobium alloys with tungsten concentrations of 10%–30%. Between 77MPa at 1410 °C and 372MPa at 1315 °C, they have a high-temperature strength
Properties of C103 Niobium Alloy plate
| Hardness of C103 Niobium alloy | |||
| Shape | Status | Types of hardness | Value |
| Ingot | As-cast | HB (3tonФ 10/30") | 154-160 |
| Rod | extrude | 152-155 | |
| forge | 174-179 | ||
| 1.0mm sheet | 1200℃, 1hour annealing | HV (100g,15") | 170-181 |
| 1300℃, 1hour annealing | 170-183 | ||
| Ring | forge | HV (5kgs/30") | 150-169 |
| At ambient temperature, the C103 alloy's mechanical characteristics | |||||
| Grade | Composition (mass fraction)% | Modulus of elasticity/MPa | Tensile strength/MPa | Yield strength/MPa | Elongation/% |
| C-103 | 10Hf-1Ti-0.7Zr | 112490 | 428.9 | 259.3 | 20 |
| Thermal conductivity of C103 alloy (W/(m·℃)) | ||
| Grade | 800℃ | 1200℃ |
| C-103 | 37.4 | 42.4 |
Our C-103 items
Contact our sales staff if you have any questions about C103 Niobium Alloy Plate/Sheet, C103 Rod/Wire, C103 Tube, C103 Components, or other items.
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