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| PRODUCT DATA of VT23 |
| Material | VT23 |
| General Information | Martensite (α + β)-alloys. It is based on the Ti–Al–Mo–V–Cr–Fe system and is intended to be used as-annealed and thermally hardened. Is hardenable in cross-section up to 80 mm2 |
| Processing and Assembly | Annealing temperature: 750-800 C Hardening treatment: Quenching temp:780-800C, aging: 450-550C for 6-10 hrs |
| Chemical Composition | 5.5Al–2.0Mo–4.5V–1.0Cr–0.7Fe-rem Ti |
| PHYSICAL PROPERTIES |
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| Specific Gravity | 4.57 |
| Phase changes | Polymorphic transformation temperature: 890-930 C |
| ELASTIC PROPERTIES |
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| Tensile Modulus | 108 GPa |
| ELECTRICAL PROPERTIES |
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| Electrical Volume Resistivity | 1.27e-8 ohm.m |
| THERMAL PROPERTIES |
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| Thermal Conductivity | 8.37 W/m.K |
| Thermal Expansion Coefficient | 8.5 μstrain/°C |
| RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY |
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| Bimetallic Corrosion | Can be connected without any restriction to: Cr, Cu, Brass, Cu-Ni alloys, Al-bronzes, Si-bronzes, Gun metal, P-bronzes, Sn-bronzes, Ag, 300 and 400 series stainless steel, low alloy steel, Au, Pt, C, Rh
Can be connected in a non-controlled environment to the above and Ni, Monel, Inconel, Ni-Mo alloys Can be connected in a clean room environment to above and Cd, Al-Cu alloys Needs specific measures: All others Test:ECSS-Q-ST-70C Rev.1 Table 5.1 Data Quality: Design Data |
| Welding | It is welded by all kinds of welding applicable for titanium. Nitrogen, hydrogen, carbon dioxide, and mixtures containing these gases shall not be used Welding with alloy-matching fillers is recommended, preferably using extra Low Interstitial (ELI) filler wires |