Is Cobalt drill bit stronger and better than Titanium drill bit? Which is better?
It is mainly considered that cobalt drill bits work more efficiently than Titanium drill bits, and it can be overwhelming if you are a beginner and don’t know which tool to buy.
Cobalt and titanium drill bits both provide durable and perfect results when drilling into metal or wood. Also, both are tough and do not overheat when coming into direct contact with metal. The only thing you must consider is your budget and which material you will drill into.
We’ll compare both of these Cobalt and titanium drill bits to show you the main difference between them so you can pick the best drill bit for your next project.
But before moving forward, let’s find out what you must take into account before choosing a drill bit.
Check our latest blog about the best drill machines: 7 best Cordless right-angle drills for narrow spaces.
How to choose a Drill Bit
Drills are the handiest tools, and you can use them in a variety of ways, the most common way of using a drill machine is building furniture or hanging up pictures. Therefore, you must have different types of drill bits so you can pick the right type of bit for your project.
Types of Drill Bits
Drill bits are shaped differently; they could work efficiently on different things.
· Wood Drill Bits
These types of drill bits are specially designed for wood structures such as paddle bits, brad bits, auger bits. All of these come in different sizes and shapes, depending upon the type of project.
· Metal drill bits
These drill bits are also known as HSS(high-speed steel). These HSS(high-speed-steel) bits are designed to cut through the tough metals easily without overheating. Though these are specially designed for metal surfaces; however, you can also use them on the wood surface. Generally, it goes well for both wood and metal structures.
· Multi-purpose drill bits
Multi-purpose drill bits work well for all types of structures, such as wood, metal, plastic, or ceramic. However, the results are not perfect when you do the projects with specific drill bits.
· Special drill bits
These drill bits are specially designed to perform specific jobs only. Such as cutting through the glass, hole-cutter bits, or some more DIY projects that require safe drilling.
· Masonry drill bits
Masonry bits are designed for tough surfaces and mostly come with diamond bits to use on porcelain or other hard surfaces.
Size of drill bits
Drill bits come in different sizes, depending upon the type of hole you want to create. You can easily get different sizes in a drilling bit set that’s packed with the most commonly used drill bit sizes.
Material of drill bit
There are different types of materials used for drill bit creation. Mostly are cobalt or titanium, or there are carbide bits that are used on very hard surfaces. Sometimes the bits are coated with some extra material to give them extra strength when cutting through. These tips are coated with black oxide, titanium nitride, or diamond powder. These extra materials protect them from heat and provide extra durability.
Now, when you are quite familiar with the drill bits, let’s give you an overview of the main difference between cobalt bits and titanium drill bits.
What are the key differences between Cobalt drill bits and titanium drill bits?
Both the cobalt and titanium bits are manufactured using high-speed steel alloy steel. The main difference is that the titanium bits come with a titanium nitride coating on alloy steel whereas cobalt drills have cobalt coating on the alloy steel bit.
The cobalt bits work better than titanium bits because of their better heat resistance. That’s why Cobalt bits are a bit expensive than titanium bits, but they won’t wear out sooner.
Titanium bits are good for drilling soft materials like wood, plastic, or any other soft surface, whereas Cobalt bits are best for drilling hard surfaces such as iron, steel, or other hard surfaces.
Check out the comparison table of titanium and cobalt bits.
|Titanium Bits||Cobalt Drill Bit|
|Composition||High-Speed Steel alloy with Titanium nitride coating||Alloy steel with 5% to 8% cobalt|
|Color||gold or bluish color||Dull gold|
|Best Uses||Best for drilling wood, aluminium, copper, brass, mild steel, cast iron, or other soft surfaces||Best for drilling hard alloy steel, weld seams, hardened steel, etc.|
|Best Rated||Titanium Bit Set||Cobalt Bit Set|
Now, let’s discuss in detail what Cobalt and titanium bits are and how you can benefit from them.
Titanium Drill bit
As we discussed earlier, the titanium bits core is made of steel and then coated with different types of titanium nitrides to maintain longevity. Due to titanium coating, the titanium drill bits can withstand high temperatures and still be durable.
Titanium drill bits aren’t made of steel or titanium. As we discussed earlier, there are mainly three types of titanium coatings that are used on titanium drill bits. But one thing is for sure: there’s no Cobalt substance included in the core material of titanium drill bits.
These three types of titanium coatings are as follows;
- Titanium Nitride (TiN)
- Titanium Carbo-Nitride
- Titanium Aluminum Nitride
Titanium Nitride: drill bits with titanium nitride coating are easily distinguishable because of their bright gold color. These bits are entry-level titanium bits and are mostly used for wood cutting.
Titanium Carbo-nitriding (TiCN): TiCN coating is better than titanium nitride coating because of its better wear resistance property. You can easily distinguish between titanium nitride and titanium carbo-nitride coating because of its bluish/purple color coat. It offers better performance and durability than other titanium bits. It especially works well with machines that encounter heavy mechanical stress. These bits can bear temperatures up to 1500F. That’s why they can easily drill into tough materials.
Titanium Aluminum Nitride (TiAIN): The titanium aluminum nitride bits can withstand high temperatures ups to 1450F. These bits can maintain a layer of aluminum oxide that reflects the heat to the drill chips; in this way, you can easily drill at high cutting speed without any resistance. The titanium aluminum nitride bits come with a grey color coat.
Titanium drill bits have a different coating, and with excessive usage, the coating will wear off completely, leaving the drill-less temperature resistant. That’s the main problem that you can not sharpen these bits, and after the coating is worn off, the metal-on-metal drilling will become very hot. That’s why titanium drill bits have a short lifespan.
As we discussed earlier, the titanium coating can bear temperatures up to 1500F, especially titanium aluminum nitride coating can dissipate heat more than other titanium drill bits. The aluminum coating protects the core from heating up.
Titanium drill bits are less costly than cobalt bits; however, you can’t expect durability due to the coating wear and tear. However, if you are on a budget and looking for cheaper options, titanium bits are good to go.
Cobalt Drill bits
Cobalt drill bits are not purely made of cobalt. Rather they are a mixture of cobalt and steel. Cobalt bits are tough bits compared to titanium bits and cut through all types of metals, including stainless steel or iron. These are equally suitable for softer materials like wood or plastic and precisely cut on any surface.
Cobalt bit’s main construction material is alloy steel with a 5 to 8% cobalt mixture. Cobalt makes these bits tough and durable, also prevents bits from overheating when spinning through tough metals.
Cobalt bits are easy to sharpen as they do not have any coating on the surface. That’s why they give you long-term results with a longer lifespan. You can easily recognize cobalt bits because of their gold color and sharpen them whenever dull.
When two metal-to-metal surfaces are rubbed together, heating up is a natural process, so you need a high heat resistance metal bit when cutting or spinning through metals.
Cobalt is good at dissipating heat when it comes in contact with any metal. Therefore, cobalt bits have the inherent ability to dissipate heat even at the top speed. So, you can easily work with cobalt bits without worrying about heating up.
Though cobalt bits are quite expensive yet, you’ll get great value for money with their long-lasting results and durability. So, consider it as your long-term investment.
Which one is good to go with?
Honestly, neither one is better than the other; it entirely depends upon the type of material you’re going to use on.
So, if you plan to use it on different types of metals or on some tough surfaces, consider cobalt bits because they work best on tough metals. These are equally good for beginners, professionals, or lots of DIY projects.
Titanium bits are best for softer metals like wood or plastic and won’t wear out quickly if used on soft metals. If you are not going to use it on harder metals quite often, they won’t need frequent sharpening and go well in the long run. Also, titanium bits are cheaper than cobalt bits. So, choose wisely which one will work for you the best.