Here are the Strength classification of titanium alloy plates as blow:
1. Strength Classification of Titanium Alloy Plates
Low strength : industrial pure titanium, corrosion-resistant structural components, chemical equipment;
Common strength: Aviation sheet parts, hydraulic pipes;
High strength: Aircraft load-bearing structural components, missile parts.
2. Key Performance Influencing Factors
1). Alloy composition design
Aluminum : TI-6.5Al-1Mo-1V-2Zr contains 6.0% - 7.0% aluminum, significantly enhancing high-temperature strength;
Vanadium/chromium : in Ti-15V-3Al-3Cr-3Sn, 14% - 16% vanadium + 2.5% - 3.5% chromium to enhance the stability of the β phase.
2). Process control
Forging process : multi-directional forging refines grains, reducing the crack rate of TC4 sheet by 40%;
Heat treatment : the strength of Grade 5 increases by 1200MPa after aging treatment.
3). Impurity control
The oxygen content should be ≤0.15% and the iron content ≤0.3% to prevent the precipitation of brittle phases.
3. Intensity Requirements for Application Scenarios
Aerospace: High-temperature strength > 600MPa. Rocket fuel tanks, engine blades;
Marine engineering : Corrosion resistance + tensile strength ≥750MPa, ship hull, pressure-resistant shell;
Military equipment : ultra-high strength > 1300MPa, missile structural components, armor linings;
4. Strength and Plasticity Balance Technology
Welding performance : The strength of the TB6 welded joint reaches over 90% of the base material, and the elongation is 8% - 12%.
Rolling optimization : Grade 5 sheet adopts β -phase zone hot rolling + double annealing, with elongation increased by 12%.
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Tel: +86-917-8883215
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