1. Introduce
– Relatively soft and ductile in pure state, but becomes stronger and brittle when impurities are added
– Element itself is highly reactive and exists only as a compound in nature
– Due to the oxide passivation protective film, it is not easily corroded at room temperature and is stable in strong acidic atmospheres such as alkali, sulfuric acid, hydrochloric acid, etc.
– Adding small amounts of V to steel improves the steel’s strength and high temperature properties
– V alloying element influence: improve strength, high temperature properties
2. Property
– Excellent ductility, corrosion resistance, heat resistance
[V Mechanical Properties]
| Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation (%) |
|---|---|---|
| 800 | 776 | 2 |
[V Physical Properties]
| Density (g/㎤) | Melting Range (℃) | Electrical resistivity (µΩ∙㎝) | Specific Heat (J/kg∙℃) | Thermal Conductivity (W/mK) | Coefficient of Thermal Expansion (µm/m°C) |
|---|---|---|---|---|---|
| 6.11 | 1735 | 24.8 | 502 | 31 | 8.96~11.57 |
3. Application
– Tools, springs, missiles, jet engines, automobile axles, crankshafts, bicycle frames, gears, high speed cutting tools, surgical knives
(1) Tools / (2) Automotive axles / (3) Crankshafts / (4) High-speed cutting tools
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