Titanium Grade 5 vs. Grade 23: Selecting the Ideal Alloy for Your CNC Projects

Introduction to Titanium and CNC Projects

Titanium, renowned for its high strength-to-density ratio and resistance to corrosion, plays a pivotal role in an array of applications across diverse industries. This tough metal and light-weight substance is particularly valuable within the aerospace industry, where durability and weight considerations are imperative. Furthermore, titanium’s biocompatibility makes it ideal for medical implants and devices.

In contrast, Computer Numerical Control (CNC) projects involve the precise cutting, milling, or drilling of materials using programmed instructions. These machining processes help achieve highly accurate and consistent results that aren’t possible with manual operations. Deploying various grades of titanium in these advanced machining methods can substantially improve product performance.

  • Importance: Selection of appropriate titanium alloy grade – such as Grade 5 or Grade 23 – significantly influences the efficiency and quality of CNC-manufactured parts.
  • Explanation of CNC projects: It involves feeding pre-programmed computer software dictating the movements of factory tools and machinery hence providing high accuracy and increased productivity.

Overview of Titanium Grade 5 and Grade 23

The dominant member in the titanium family is Titanium Grade 5. It is often referred to as Ti6Al4V because of its elemental composition—approximately 90% titanium, 6% aluminum, and 4% vanadium. This alloy’s zealous tensile strength and low density make it a favorite amongst industries like aerospace, medical, marine, and chemical processing. Some key attributes are high mechanical strength, superior toughness, and excellent corrosion resistance.

Moving onto Titanium Grade 23, this one has been classified under medically pure grades mainly due to its biocompatibility. Also known as Ti-6AL-4V ELI, where ‘ELI’ stands for Extra Low Interstitials boasting an enhanced ductility over grade 5 making it ideal for surgical implants. Its attributes include high fatigue strength, impressive toughness, and extensive corrosion resistance in oxidizing environments.

Structural Differences Between Grade 5 and Grade 23 Titanium

The structural differences between grade 5 and grade 23 titanium significantly affect their individual properties, best-suited applications, and overall performance in any given CNC project. On one hand, the composition of Grade 5 titanium makes it an alpha-beta alloy consisting of about 90% titanium, 6% aluminum, and 4% vanadium. This specific chemical blend gives it superior strength, excellent corrosion resistance, and good weldability.

On the other hand, the Grade 23 titanium has a distinctive composition that consists predominantly of titanium but also includes 6% aluminum and 4% vanadium with extra low interstitial elements (ELI). The addition of ELI provides higher purity levels which enhance fatigue strength, ductility, fracture toughness and better mechanical properties at cryogenic temperatures.

  • Grade 5 – High-temperature stability, excellent strength-to-weight ratio, and remarkable corrosion resistance.
  • Grade 23 – Superior damage tolerance, improved tensile strength, and enhanced fracture resistance thanks to its lower oxygen content.

In comparing the two grades, both exhibit excellent mechanical and physical properties, but the choice between them ultimately depends on the specific requirements of your CNC projects. If high-strength materials are required for projects exposed to severe wear and corrosive environments, Grade 5 could be an ideal choice. Conversely, for applications demanding high purity and enhanced durability, especially in medical or dental domains, Grade 23 often proves more suitable.

Exploring the Properties and Characteristics of Titanium Grade 5 and Grade 23

Titanium Grade 5, also known as Ti-6Al-4V, is an alpha-beta alloy with excellent strength, corrosion resistance, and weldability. It is commonly used in aerospace, marine, and chemical processing industries. On the other hand, Titanium Grade 23, or Ti-6Al-4V ELI, is a medical-grade alloy with similar properties to Grade 5 but enhanced ductility and fracture toughness. It is often used in medical implants and surgical devices.

Comparative Performance of Titanium Grade 5 and Grade 23 in CNC Projects

In considering the ideal alloy for Computer Numerically Controlled (CNC) projects, both Titanium Grade 5 and Grade 23 yield significant benefits.

Titanium Grade 5, also known as Ti6Al4V, offers exceptional strength, low density, high corrosion resistance, and excellent mechanical properties at higher temperatures. Typical applications where Titanium grade 5 is ideally employed include turbine blades, compressor discs, aircraft structural parts and auto sports components thanks to its performance under intense stress conditions.

On the other hand, Titanium Grade 23, or TI-6AL-4V ELI, provides superior damage tolerance comparable to fracture toughness, fatigue crack growth rate, tensile strength, and resistivity to biological environments – making it a top choice for medical implants and orthopedic devices production in the realm of CNC milling operations.

Comparatively, both alloys deliver substantial utility in different realms. While Grade 5’s general versatility makes it a more common selection for a broad spectrum of CNC machined products, Grade 23’s extra-low interstitial component enhances its physical characteristics such that it’s preferable for intricate high precision medical manufacturing needs.

Applications Suitable for Each Grade

In manufacturing, the favourable blend of strength, lightness and corrosion resistance makes titanium grade 5 ideal for use in aerospace applications. This high-strength alloy is frequently utilized in the production of aircraft structures and jet engines due to its impressive performance under strenuous conditions. For example, many critical components within jet turbines are fabricated from grade 5 titanium because it can effectively withstand extreme heat and stress without compromising on durability or weight.

On the other hand, titanium grade 23 finds primary utilization in medical and dental industry. With its exceptional biocompatibility properties, this lower oxygen variant of grade 5 is commonly favoured in industrial processes that manufacture surgical implants and dental prosthetics. One illustrative application of these properties is the production of hip replacement implants – the implants made from grade 23 titanium offer a high degree of stability, longevity and minimal adverse body reactions, making them an ideal material choice for such life improving devices.


In concluding, the article has comprehensively delved into the technical qualities of Titanium Grade 5 and Grade 23, critically examining their areas of applicability in CNC projects. Key distinctions were drawn between the two grades, with emphasis on strength, weight, temperature resistance, and corrosion resistance, among other key mechanical properties. Specifically, while Grade 5’s higher strength, heat tolerance make it more suitable for parts like gears and turbine blades, Grade 23’s superior biocompatibility aligns it well with medical implants manufacturing.

  • Titanium Grade 5: Superior Strength, Excellent Heat Tolerance – Ideal for Gears and Turbine Blades
  • Titanium Grade 23: Enhanced Biocompatibility – Perfect Fit for Medical Implants Manufacturing

To choose the ideal alloy for your CNC project, understanding these salient differences is crucial, thereby ensuring you harness the most beneficial characteristics from each grade relative to your project demands.

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Want.Net Technical Team

Want.Net Technical Team

The Want.Net Technical Team has diverse members with extensive education and training in CNC machining. They prioritize precision, efficiency, and innovation to provide high-quality manufacturing solutions globally.

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