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rust

Table of Contents

Can Titanium Rust?

 
Speaking of rust, it is stainless steel or iron that you often hear. You may have concerns about if my titanium things get rusting after days? The answer is no.
 
Titanium won’t get rust. Titanium is an active metal, and it has strong bonding power with oxygen. When Titanium is exposed to specific environments such as those with hot nitric acid, chlorine, salt water, and extreme temperatures, it instantaneously forms an oxide film on the surface. The film is a highly stable passive; it does not oxidize further because it does not pass oxygen. Even if the surface can be scratched, the oxide film is repaired instantaneously to maintain corrosion resistance forever.
 

Titanium vs. Stainless Steel

Stainless Steel is an alloy in which chromium and nickel are mixed with iron. Chromium etc., make a passive film on the surface, this protects the interior, and it becomes a rust-resistant metal. So far, it is the same as Titanium.
 
Passive film of stainless steel is often destroyed by acid, and chloride ions also drop it. This corrosion resistance to chloride ions is the difference between Titanium and stainless steel.
 
Titanium is a pure metal, a metal element. Let’s see the actual phenomenon below.
titanium vs stainless steel

Oxygen atoms and chloride ions are easy to substitute for the passive film of stainless steel, and metal chloride which is easily soluble in water is produced. And the film of that part will dissolve in water and will be lost. Also, since the radius of the hydratable chloride ion is small, it easily passes through the fine pores of the surface coating (the film is dissolved in water and lost), and if it passes it will rust.

Thus, stainless steel is not corrosion-resistant to chloride ions.

In contrast, since the oxide film of titanium is stable against chloride ions, it also shows extremely high corrosion resistance even in chloride solutions. Titanium is also corroded to reducing acids (such as hydrochloric acid and sulfuric acid), but it is stabilized by adding a small amount of oxidizing agent.

can titanium rust

Titanium Uses and Applications

titanium alloy tc4 applications

You’ll find titanium piping in power plants, desalination plants, off-shore drilling platforms, and in everyday private and commercial structures and factories. Titanium is found in many everyday objects in the home as well. It is also less prone to rust and corrosion than other metals and alloys.

The military and aerospace engineering firms use titanium parts in aircraft, weapons, and vehicles to handle extremely high temperatures and rust and corrosion resistance. Titanium is found in various car parts such as mufflers and exhaust pipes and much outdoor gear such as hunting knives, fishing reels and poles, golf clubs, air rifles, and air pistols.

Due to its biocompatibility, Titanium is used extensively in the human body, as hip and knee implants, pacemaker cases, dental implants, and craniofacial plates, to name a few specific medical applications.

Today, Titanium has become a more popular metal for daily use.

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