(1) Common brand names and standards
1) Industrial pure titanium (low strength, high plasticity):
① GR1 (TA1), GR2 (TA2) - Excellent corrosion resistance, used in chemical and marine equipment.
② Titanium alloy (high strength, high temperature resistance):
③ GR5 (TC4, Ti-6Al-4V) - the preferred choice for aviation and medical applications, with the best comprehensive performance.
④ GR7 (Ti-0.2Pd), GR12 (Ti-0.3Mo-0.8Ni) - with stronger corrosion resistance, used in the chemical industry.
⑤ Ti-6Al-4V ELI (ultra-low gap element) - highly biocompatible, used for human implants.
2) Execution standards:
⑥ National standards (GB/T): GB/T 13810 (titanium materials), GB/T 3620.1 (chemical composition of grades).
⑦ American standard (ASTM): ASTM B348 (titanium rod), ASTM F136 (medical titanium alloy).
⑧ International standards: ISO 5832-3 (surgical implants), AMS 4928 (aerospace titanium alloys)
(2) Core Features
1) Lightweight and high-strength: density of 4.5g/cm ³ (only 60% of steel), tensile strength can reach 900MPa (GR5).
2) Corrosion resistance: resistant to seawater, chloride ions, and organic acids, with a chemical equipment lifespan far exceeding that of stainless steel.
3) Biocompatibility: Medical grade titanium is non-toxic and non-magnetic, and can coexist with human tissues for a long time.
4) Resistant to extreme environments: working temperature range -250 ℃~600 ℃ (some alloys can reach up to 800 ℃ in the short term).
(3) Typical application areas
1) Aerospace: aircraft engine blades, cabin door hinges, spacecraft structural components (mainly GR5).
2) Medical implants: artificial joints, dental implants, cardiovascular stents (GR1/GR5 ELI).
3) Chemical energy: valves, pump bodies, heat exchangers (GR7/GR12 have better corrosion resistance).
4) Precision instruments: optical supports, semiconductor equipment components (low thermal expansion coefficient).