Titanium Alloy Types (Alpha, Beta, Alpha-Beta) – Properties, Comparison & Selection Guide

In modern life, you can find titanium products widely used in various fields, such as airplane components. What characteristics does titanium alloy have? What are the different types of titanium alloys? Follow us to go over the types and properties of titanium in this article.In modern life, titanium products are widely used in various fields, such as airplane components. What characteristics does titanium alloy have? What are the different types of titanium alloys? Follow us to go over the types and properties of titanium in this article.

What is Titanium Alloy? - Titanium Properties

Titanium alloys are engineered materials made by combining titanium with elements such as aluminum, vanadium, or molybdenum to improve strength, corrosion resistance, and temperature performance.They are widely used in:

Aerospace components

Medical implants

CNC machined precision parts

The key difference between alloy types lies in their microstructure and phase composition.

Quick Comparison of Titanium Alloy Types

Type	Strength	Heat Resistance	Typical Applications	Machinability
Alpha	Medium	Excellent	Aerospace, high-temp parts	Good
Beta	Very High	Low	Springs, high-strength parts	Poor
Alpha-Beta	Balanced	Medium	CNC parts, aerospace, medical	Medium

If you’re unsure → choose Alpha-Beta (Ti-6Al-4V)

Alpha vs Beta vs Alpha-Beta Titanium

Alpha Titanium Alloys

Key characteristics are excellent corrosion resistance. Strong performance at high temperatures. Non-heat treatable. Good weldability.

Best for Aerospace structures. Elevated temperature environments. The limitation is lower strength compared to other types.

Beta Titanium Alloys

Key characteristics are highest strength among titanium alloys. Heat treatable. Excellent formability. Best for high-strength components. Springs and fasteners. Not ideal for high-temperature environments. CNC machining (tool wear is high).

Alpha-Beta Titanium Alloys

Key characteristics are balanced strength and ductility. Heat treatable. Moderate machinability. Best for general engineering, CNC machining and aerospace & medical parts.

How to Choose the Right Titanium Alloy?

Use this quick selection guide. Need high temperature resistance→ choose Alpha .Need maximum strength→ choose Beta. Need balanced performance (recommended)→ choose Alpha-Beta. For CNC machining, Alpha-Beta alloys are the safest and most cost-effective choice. Beta alloys increase machining cost significantly.

Machinability of Titanium Alloys

Machining titanium is challenging due to low thermal conductivity, high chemical reactivity and tool wear.

Comparison:

Alpha → easiest to machine
Alpha-Beta → moderate
Beta → difficult (high tool wear, low efficiency)

Practical insight if cost matters, avoid Beta alloys unless absolutely necessary.

Most Common Titanium Alloy: Ti-6Al-4V

Ti-6Al-4V is the most widely used titanium alloy. It has excellent strength-to-weight ratio. Good corrosion resistance. Suitable for CNC machining.

Typical applications are Aerospace components, medical implants and precision machined parts. In real-world CNC projects, this is the default titanium material.

Applications of Titanium Alloy Types

Aerospace

Alpha & Alpha-Beta alloys for structural parts

Medical

Alpha-Beta alloys for implants and surgical devices

Industrial & CNC Machining

Alpha-Beta alloys dominate due to balanced properties

When NOT to Use Certain Titanium Alloys

Avoid Beta titanium when high temperature stability is required. Machining cost is a concern. Avoid Alpha when high strength is critical. Choosing the wrong alloy can increase cost without improving performance.