A4 is a Ti - Al binary alloy. Its tensile strength is slightly higher than the commercially pure titanium, do moderate-intensity range structural materials. Domestic mainly used wire. TA4 chemical composition of titanium, aluminum: 2.0 ~ 3.3, Fe 0.30, Si 0.15 C 0.10, N 0.05,surgical implant
titanium 0.015 hydrogen, oxygen 0.15.
TA5 is a full a titanium alloy containing 4% aluminum and 0.005% boron. Its tensile strength than pure titanium high, but somewhat less plasticity, good weldability and corrosion resistance. The titanium alloy in the annealed state of delivery, can be used as structural materials seawater corrosion environments, has been successfully used in the shipbuilding industry. The chemical composition of titanium TA5, aluminum 3.3 to 4.3, boron 0.005, Fe 0.30 Si 0.15 C 0.10, N 0.04, 0.015 hydrogen, oxygen 0.15.
TA6 is a full a titanium alloy, containing 5% aluminum and silicon 0.015. Its high tensile strength than TA6, but the plastic than TA5 poor, good weldability and corrosion resistance. TA6 chemical composition of titanium, aluminum, 4.0 to 5.5, Fe 0.30, Si 0.15 C 0.10, N 0.05, 0.015 hydrogen, oxygen 0.15. TA6 main physical properties of titanium, density: 4.4 g / cm, a + β / β transformation point: 1000 to 1020 ° C, resistivity: 1.08 ohm mm2 / m.
TA7 is a titanium - aluminum - a whole tin ternary alloys, containing 5% aluminum and 2.5% tin. With moderate strength (80 kg / mm or so) in the annealed condition and sufficient ductility, good weldability. The material can be used as body temperatures below 500 ℃, short-term use temperature up to 900 ℃. When the titanium content is very low interstitial elements in the ultra-low temperature (-253 ℃) also has good toughness and overall performance, is an excellent ultra-low temperature titanium alloy. TA7 chemical composition of titanium: 4.0 to 5.5% aluminum, titanium standard part 2.0 to 3.0% tin, 0.3% iron, 0.15% silicon, 0.1% carbon, 0.05% nitrogen, 0.015% hydrogen, 0.2% oxygen.
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