Titanium and steel are two of the most used metals across several industries due to their unique properties. Both metals have advantages and disadvantages and excel in different applications.
In this article, we will provide an in-depth comparison of these two metals, outlining their different properties, advantages, disadvantages, as well as how to choose the right metal for your project.
Titanium is an elemental earth metal (the fourth most abundant metal) that, due to its high cost and demanding processing requirements, is found in high-performance industries. Titanium is alloyed with other metals such as iron and aluminum since its high melting point makes it difficult to machine or process in its pure, elemental form alone.
These alloys are a must-have for aircraft, automobile engines, marine equipment, industrial machinery and consumer goods. They offer high corrosion resistance, impact absorption, exceptional strength-to-weight ratio and a variety of other qualities, making them a great choice for outstanding performance in most cases – especially if cost is not a deciding factor.
Steel is an iron-carbon alloy that may be mixed with other metals to enhance its mechanical properties. It is popular in almost every industry due to its strength, temperature resistance, tensile strength, excellent machinability and other outstanding physical properties.
Its low cost and workability make it the preferred choice for construction, automobiles, infrastructure, industrial machines and many other sectors.
Both steel and titanium are strong materials that are common in a variety of applications. But in a head-to-head with steel vs titanium, what are the primary differences?
Titanium is a naturally occurring element that is accessible in both pure and alloy forms. The most common titanium alloy, Ti 6-4, contains aluminum and vanadium. Steel is also a man-made material composed of iron and carbon, with different proportions of additional elements that alter its qualities, depending on the intended use.
Steel and titanium differ in their crystalline structure, with titanium being a HCP (hexagonal close packed) structure and steel BCC (body centered cubic). This is one of the main reasons why titanium offers lower density and a higher strength ratio.
Because of its low density and excellent strength-to-weight ratio, titanium is a desirable material for aerospace applications, where it is usually shaped using CNC machining processes.
Steel alloys are strong and long-lasting, but they are heavy, making them excellent for situations where cost is a greater priority than weight.
Steel trumps titanium in a number of categories, including hardness. One of the reasons titanium is so difficult to process is because of its low Brinell number. Titanium alloys are prevalent in the industry because trace quantities of other metals balance titanium’s poor material hardness.
This is another area where steel generally outshines even titanium as most of its alloys are more elastic. Once again, greater elasticity makes the steel easier to machine and create custom parts, which is an extremely important characteristic as it directly affects the processing cost.
The debate on titanium vs steel will never give you a straightforward answer. In all cases, your project, conditions, and the available budget will determine which one is the better choice.
There is a significant amount of overlap in strength across the range of steel and titanium alloys, so it’s difficult to call one stronger than the other; there are grades of steel stronger than some titanium grades, and vice versa.
Titanium stands out thanks to its ability to resist corrosion and tolerate severe temperatures.
Steel alloys work well in most situations, but the presence of iron guarantees they will corrode eventually. Titanium, on the other hand, outperforms and is employed in harsh environments where persistent exposure to moisture, chemicals and other substances is expected.
Titanium is commonly employed in high-performance applications where strong thermal properties, high resistance to corrosion and a high strength-to-weight ratio are a must. Titanium is commonly used in the following applications:
Steel and its alloys are among the most extensively used metals due to their versatility. From the production of metal parts to basic building and mechanical development; the material is used across the world and in virtually every industry. These are some of its most popular applications:
Steel is the less expensive choice when compared to titanium since it is easier to produce with fewer processing requirements. But, due to the multiplicity of its forms, the costs vary substantially.
Titanium is generally 20-40x more expensive than steel per unit weight.
The most appealing aspect of titanium is its remarkable resistance to corrosion. When exposed to air, titanium forms a thin, impermeable layer of oxide on its surface. Furthermore, the oxide layer is naturally robust and highly resistant to practically all major corrosion causes, making titanium an excellent choice for any outdoor application.
Titanium has a high melting point. Titanium’s melting point of roughly 1668 °C makes it an excellent choice for high-temperature applications such as turbine jet engines.
Titanium, unlike most other metals, is not hazardous to humans or animals. This is why titanium is widely used in the medical industry. Titanium is the material of choice for medical practitioners for anything from bone strengthening to dental braces.
Titanium has many qualities that allow it to withstand high temperatures. Titanium does not shrink or expand, making it a crucial component for structural integrity.
Titanium is one of the strongest materials available. Despite being a relatively light metal, titanium has a high strength-to-weight ratio.
Titanium is great but it’s also expensive, making it prohibitive for all but the most critical of parts and projects.
Titanium has a low elasticity modulus and is easily deformed. Titanium is difficult to machine due to its low stress-to-strain ratio.
If you intend to use titanium for casting, you should reconsider and explore alternate options. Titanium’s intrinsic qualities, such as its high melting point and strength, hamper the casting process.
Its strength, low elasticity and hardness mean it can be more challenging to work with than steel and many other materials. The high unit cost of titanium also makes certain manufacturing processes prohibitively expensive due to wastage.
Titanium extraction is not easy. Not only are the extraction components pricey, but they are also risky to handle. The extraction process also causes soil erosion and other environmental issues.
Steel is one of the most widely utilized and accessible metals on the planet. It’s also reasonably priced and easy to obtain.
Steel has always been recognized for its strength and durability. Steel can also withstand and preserve structural integrity in extreme situations like tornadoes and hurricanes.
The wonderful thing about steel is that it can always be reused with well established processing, while maintaining its original strength and adaptability.
Steel, as a component, provides designers with greater freedom and customizability than other materials. Steel’s characteristics can be varied by combining it with several additional elements.
As a rule, steel exhibits excellent weldability, machinability and is very easy and predictable to form. This makes it an extremely versatile material.
Steel can lose up to 0.5mm of thickness and thus strength per year if exposed to certain environments and not properly maintained or protected.
Steel must also be adequately protected against high temperatures. While there is no threat of combustion, steel’s resistance to ‘creep’ is quite poor, meaning at high temperatures, its strength drops precipitously.
Steel isn’t deemed visually appealing for the vast majority of products. As a result, steel items typically require surface treatment or cladding to be more aesthetically pleasing.
Titanium is significantly stronger than stainless steel, making it excellent for high-stress applications such as airplane building. Stainless steel, on the other hand, is more corrosion-resistant than titanium and is therefore commonly used in food processing and medical equipment.
Titanium provides higher strength per unit mass, but steel remains the superior choice in terms of total strength. Titanium is perfect for circumstances requiring strength and lightness, which is why it’s commonly used in high performance automobile and aerospace designs. Steel is a logical choice when only strength is required, but titanium is suitable when both strength and weight are a factor.
Both titanium and steel have unique properties that make them suitable for different applications. When deciding between these two materials, consider the following factors:
Ultimately, the choice between titanium and steel will depend on the specific requirements of your project and the trade-offs you are willing to make in terms of cost, weight, strength and resistance to corrosion. By carefully considering these factors, you can make an informed decision and select the best material for your application.
Stainless Steel is an alloy of iron with minimum chromium of 10.5%. On the surface of the steel chromium produces a thin layer of oxide which is known as 'passive layer'. And this helps to prevent any further corrosion of the surface. The increased amount of chromium gives an increased resistance to corrosion. Stainless Steel additionally contains varied amounts of Carbon, Silicon and Manganese. Other elements such as Nickel and Molybdenum may be added to impart other helpful properties like enhanced formability and increased corrosion resistance. Stainless Steel is combined with one or more elements in order to change its characteristics.
Titanium is a metallic element it has silver to grey color. It is an atomic number 12 and Ti is it symbol as a chemical element. Titanium alloy offers a high heat transfer efficiency and high resistant to corrosion. It also offers high strength-to-weight ratio, creating an extremely strong substance. Hence it is highly desirable where temperature changes and the elements of weather can create adverse effects on structural components, for example, in construction industries. Titanium alloy provides a high level of mechanical resistance which makes it extremely durable. The lightweight due to low density makes it desirable to certain industries. Its corrosion resistance is found across a wide field, which makes it highly resistant to corrosion created by a wide assortment of acids, alkalis, natural waters and industrial chemicals.
The main difference between stainless steel and titanium is simply that titanium is a metal while stainless steel is an alloy metal. Titanium's characteristics are naturally found within it, while stainless steel characteristics are created by adding alloying metals to it. For use in a specific project or activity circumstances exist that often suggest one substance is better suited than the other.
Stainless steel is preferred by industries that place a higher significance on weight than strength. It is highly suitable for specific industries, such as aerospace, an industry that requires lower density in addition to strength. Due to the unique qualities of titanium that deliver strength and durability along with low density it is often preferred by some manufacturers. Therefore titanium is often preferred when weight is a more important consideration than strength.
Titanium is more expensive than stainless steel which makes it cost-prohibitive for some industries where large quantity is required such as for construction. Therefore, when money is an important part of the equation, stainless steel is chosen over titanium if both substances are deemed suitable.
Titanium is extremely biocompatible, means that it is nontoxic to the human body. It is an excellent source for replacement parts such as knee replacements, hip implants, cases for pacemakers and craniofacial plates for the human body. Hence it is used regularly in the medical industry. It is also useful in the dental industry for dental implants, a growing area of the dentistry field. Titanium alloy is commonly used to make jewelry due to its biocompatibility and lightweight nature compared to stainless steel.
Stainless steel provides formability and weldability both, which allows it to be easily shaped. Stainless steel material is popular for use in a number of industries due to its shiny appearance. It is useful to make household items such as kitchen pans and pots, as well as to make healthcare products, such as portable carts, sinks, shelving, tables and countertops.
Titanium is highly resistant to fatigue caused by fluctuating changes in temperature, while stainless steel is subject to shattering and fatigue. Therefore, titanium is a better choice when variations in temperature lead to extreme highs or lows.
Titanium and stainless steel are used in many industries around the world. Both are highly strong, durable and corrosion resistant. Generally it is the nature of its use decides which metal is to be selected.
Price
Titanium $35.00-$50.00/ Kilogram Stainless Steel $1.00-$1.50/ Kilogram