Compared to stainless steel

1. Density and specific strength

① Titanium alloy has a significantly lower density than stainless steel and a much higher specific strength, making it particularly suitable for weight sensitive aerospace structural components.

② Although titanium steel is corrosion-resistant, its high density and weight cannot meet the demand for lightweighting.

2. Corrosion resistance and high temperature performance

① The surface oxide film of titanium alloy endows it with natural corrosion resistance, especially suitable for marine environments and chemical corrosive media, with a longer lifespan than stainless steel.

② Titanium alloy has excellent high-temperature stability and can maintain mechanical properties above 500 ℃, which is superior to stainless steel and ordinary alloy steel and suitable for high-temperature engine components.

3. Cost and Processing

① The melting and processing technology of titanium alloy is complex, and the cost is much higher than that of stainless steel; Titanium steel has a lower cost and is widely used in civil corrosion-resistant scenarios.

Comparison with aluminum alloy/magnesium alloy

1. Specific strength and weight

Titanium alloy has higher specific strength than aluminum alloy and magnesium alloy, but slightly higher density, and its comprehensive performance is more suitable for high load scenarios.

2. High temperature resistance and corrosion resistance

Titanium alloy has significantly better high-temperature resistance and corrosion resistance than aluminum alloy, making it suitable for spacecraft casings and engine components.

Magnesium alloys have outstanding advantages in lightweight, but they are prone to oxidation and have poor corrosion resistance, making them commonly used for structural components in non high temperature and non corrosive environments.

3. Economy and Application Fields

Aluminum alloys and magnesium alloys are low-cost, easy to process, and widely used in fields such as automobiles and consumer electronics; Titanium alloy focuses on high-end aerospace and deep-sea equipment.

Compared to pure titanium

1. Mechanical performance

Pure titanium has high plasticity but low strength. Titanium alloys are suitable for high-strength structural components by adding elements such as aluminum and vanadium.

2. Biocompatibility and Corrosion Resistance

Pure titanium has better biocompatibility and is widely used in orthopedic implants and dental instruments; Titanium alloys have slightly lower biocompatibility due to the presence of other elements, but their corrosion resistance is still superior to most metals.

3. Application scenarios

Pure titanium is suitable for corrosion-resistant scenarios such as chemical pipelines; Titanium alloy is used in high-strength and high-temperature resistant fields such as aircraft engine blades and aerospace fasteners.

Compared to other metals

1. Zinc alloy: Titanium alloy has significantly higher hardness and tensile strength, and its density is only 60% of zinc alloy. However, zinc alloy has low cost and is easy to process, making it suitable for ordinary industrial parts.

2. Traditional steel: Titanium alloy has a specific strength more than twice that of high-quality steel and better corrosion resistance, but steel still dominates in large-scale projects such as construction and bridges.

summarize

The core advantages of titanium and titanium alloys lie in their high specific strength, corrosion resistance, and high-temperature stability, which are lightweight without compromising strength. However, their high cost and complex processing technology limit their popularity in civilian applications. In high-end fields such as aerospace and deep-sea equipment, titanium alloy is irreplaceable; In chemical and other fields, pure titanium has advantages due to its biocompatibility and corrosion resistance. Other materials compete differently in the mid to low end market through cost-effectiveness and ease of processing.