Grade 2 titanium is a type of commercial pure titanium (CP Titanium), produced according to international standards such as ASTM B265 and JIS H4600, with the UNS number R50400, corresponding to Chinese grade TA2 and Japanese grade TR340C. Its purity is ≥99%, with major impurities including iron (Fe ≤ 0.30%), oxygen (O ≤ 0.25%), carbon (C ≤ 0.08%), nitrogen (N ≤ 0.03%), and hydrogen (H ≤ 0.015%). Among the four grades of industrial pure titanium (Gr.1-Gr.4), Grade 2 has corrosion resistance second only to Grade 1 but offers higher strength and optimal overall performance, making it the most widely used. It complies with international standards: ASTM B265, ASTM B348, ASTM F67.
Product parameter
Density: 4.51 g/cm³, about 40% lighter than steel.
Melting point: 1660-1668°C, boiling point 3535°C. Thermal conductivity: 16.4-16.7 W/(m·K), low thermal conductivity. Thermal expansion coefficient: 8.6-9.7 μm/(m·°C) (increases with increasing temperature in the range of 20-500°C).
Resistivity: 5.2×10⁻⁵ ohm·cm.
Elastic modulus: 105-120 GPa, Poisson's ratio 0.37.
Tensile strength: 345-410 MPa, yield strength 275-450 MPa.
Elongation: 20%-25% (annealed state).
Hardness: 35 HRC (annealed state), 54-60 HRC (hardened treatment).
Fatigue strength: 300-425 MPa, fracture toughness 66 MPa·m². Low temperature performance: high toughness and strength are maintained below -253°C.
Corrosion resistance: excellent performance in neutral and oxidizing media (such as seawater, wet chlorine), but poor corrosion resistance to strong reducing acids (such as hydrochloric acid, sulfuric acid).
Oxide layer: a dense oxide film (TiO₂) is spontaneously formed on the surface, which can resist high temperature oxidation (≤350°C).
Processing technic
Outer diameter: 150-1500 mm.
Inner diameter (ring material): 35-400 mm.
Cross-sectional height: 20-600 mm.
Thickness (ring material): 40-150 mm.
Dimensional tolerance: ±3 mm (specifically adjusted according to product dimensions).
Raw material preparation: High-purity sponge titanium (purity ≥99.7%) is extruded into blocks and welded into strips.
Melting: Titanium ingots are melted using a vacuum arc furnace (VAR) or electron beam furnace (EBM), controlling oxygen and nitrogen impurities.
Forging/rolling: Titanium ingots are hot-rolled into sheets or bars in the β phase region (1000-1080°°C).
Annealing: Soft annealing at 820-850°C eliminates internal stresses, followed by stress-relief annealing at 600-650°°C.
Cold working and forming: Cold rolling, stamping, and welding (recommended TIG welding).
Surface treatment: Pickling (HF-HNO₃ mixed solution) removes the oxide layer, followed by polishing or sandblasting to enhance corrosion resistance.
Main application areas
Aerospace: aircraft frames, skins, engine components, rocket combustion chambers.
Chemical and Marine Engineering: heat exchangers, reactors, seawater desalination pipelines, desulfurization and denitrification equipment.
Medical Field: bone plates, dental implants, artificial joints, cardiovascular stents.
Energy and Power: condenser tubes for nuclear power plants, flow battery electrodes, oil and gas extraction equipment.
Other Industries: cryogenic containers, liquid nitrogen/oxygen storage tanks (-196°C still maintain toughness).
Ship Components: ballast water systems, pumps and valves, propeller shafts.
Hot Tags: grade 2 titanium sheet, China grade 2 titanium sheet manufacturers, suppliers, factory, Grade 2 Titanium Plate, Grade 2 Titanium Sheet, Grade 1 Titanium Plate, pure titanium plate, , Grade 4 Titanium Plate
