Comparison Of High Temperature And Wear Resistance Of TC4, TC6 And TC11 Titanium Alloy High-performance Materials

The three commonly used titanium alloys are TC4, TC6, and TC11, all of which belong to high strength, high temperature resistance, and oxidation resistance materials. Due to the different ways of use by customers, it is necessary to explain and compare the differences in the performance of these three materials in various aspects.

1,TC4 titanium alloy

Operating temperature: -100-550 ℃, density: 4.51g/cm3 room temperature mechanical properties (25 ℃): tensile strength σb / MPa ≥ 895, the specified residual elongation stress σr0.2 / MPa ≥ 825, elongation δ5 (%) ≥ 10, sectional shrinkage ψ (%) ≥ 25 High-temperature mechanical properties (400 ℃) Tensile Strength: σb / MPa ≥ 620, durable Strength: σ100h/MPa≥570.
TC4 titanium alloy has excellent corrosion resistance, small density, high specific strength and good toughness and weldability and a series of advantages, solid solution strengthening treatment, the strength increase is not large, also to 1100MPa, annealed state strength is generally in 900MPa;

2,TC6 titanium alloy

Operating temperature: 300 ℃, density: 4.51g/cm3 room temperature mechanical properties (25 ℃) tensile strength σb/MPa ≥ 980, the specified residual elongation stress σr0.2/MPa ≥ 840, elongation δ5 (%) ≥ 10, sectional shrinkage ψ (%) ≥ 25 High-temperature mechanical properties (400 ℃) tensile strength: σb/MPa ≥735, durable strength: σ 100h/MPa≥665 Superiority: 300 ℃ / 5000h below has a good organization and performance stability, different temperature instantaneous tensile, creep, endurance and other high temperature performance and double annealed and isothermal annealed state is comparable.

TC6 titanium alloy by ordinary annealing treatment of TC6 titanium alloy semi-finished products can meet the use of aircraft structural components temperature (300 ℃ below) requirements.

3,TC11 titanium alloy

Operating temperature: 500 ℃, density: 4.51g/cm3 room temperature mechanical properties (25 ℃) tensile strength: σb/MPa>1030, the specified residual elongation stress σr0.2/MPa ≥ 900, elongation δ5 (%) ≥ 10, sectional shrinkage ψ (%) ≥ 30 High-temperature mechanical properties (500 ℃) tensile strength: σb/MPa>685, endurance strength: σ 100h/MPa≥640

Comparison of wear resistance: TC4 and TC11 alloys have poor wear resistance at 25 ℃, while at 600 ℃ has excellent wear resistance.

From the above can be seen that TC4 is not as good as TC6 and TC11 high temperature resistance, high strength is TC11, of course, wear resistance is also better.