Top High-Performance Drill Bits for Steel: A Comprehensive Guide for Indian Consumers in 2023

Drill bits are the must-have tool accessories for any machine, fabrication, or auto repair shop. It is almost impossible to do any work without a drill bit if you work in such an industry. But, every drill bit is not designed for every work. When it comes to drilling steel, you need to know the best drill bits that can perform the job quickly and efficiently.

This blog will illuminate some key aspects of drill bits for steel, like the basic idea about steel plates, types of drill bits for steel plate drilling, how to select the right one, and how to drill a hole in steel plates. 

What is Hardened and Stainless Steel?

Hardened steel is a type of steel that undergoes a heat treatment process that increases its strength and durability. It includes heating the steel to a high temperature and then rapidly cooling it.  

Stainless steel is a kind of steel that consists of at least 10.5% chromium, which gives it its unique properties. And therefore, it is difficult to drill.  

What are The Best Drill Bits for Steel?

Due to the high toughness and strength, it is extremely difficult to drill steel plates. But with the right drill bit, you can perform the work easily.

Cobalt drill bits:

Cobalt drill bits are made from a mixture of high-speed steel and 5-8% cobalt. Compared to high-speed steel (HSS) drill bits, cobalt drill bits are much stronger and can easily bore through tough materials like hardened and stainless steel plates. They can withstand high temperatures, are exceptionally long-lasting, have a high impact resistance, and are extremely strong.

Carbide-tip drill bits:

A carbide drill bit is manufactured from tungsten carbide which is one of the toughest and most durable substances. These are used to make precise drilling on materials like steel, cast iron, and aluminum. Due to its greater heat and wear resistance and ability to keep their sharpness longer, carbide drill bits are frequently chosen over conventional high-speed steel drill bits. Moreover, they can drill more accurately and quickly.

High-Speed Steel (HSS) Drill Bits:

HSS drill bits are appropriate for drilling through steel plate that is 1/4 inch thick or less since they are made of a robust steel composition. They come in various sizes and shapes and are perfect for general-purpose drilling tasks.

Titanium Drill Bits:

Due to the titanium nitride coating on the bit, drill bits made of titanium are stronger and more heat-resistant than drill bits made of conventional HSS. They work well for drilling through up to 1/2-inch thick steel plates.

Diamond-Coated Drill Bits:

Drill bits with a diamond coating are very strong and durable due to the layer of tiny diamond particles. They can be used to drill through steel plate that is 1/4 inch thick or less, but are typically used to drill through very hard materials like ceramic or glass.

How to Choose the Right Drill Bit for Steel?

Choosing the right drill bit for drilling steel plates is essential for accurate results. To select the best option, consider the thickness of the plate, its size, and the precision needed.

• Twist drill bits with carbide or titanium coating are suitable for drilling small to large holes in steel.
• Hole saws are ideal for creating larger holes in thicker pieces of steel.
• Cobalt or carbide-coated reduce-shrunk bits are tapered and used for precise drilling in smaller spaces.
• Step bits can create holes of different diameters without switching between different bits.
• Countersink bits are designed to create a conical-shaped recess on the surface of the steel.

How to Hole Stainless Steel Plates?

Drilling through stainless steel plates can be challenging. It can be done easily with the proper tools and techniques. Here are some steps to follow when drilling through stainless steel plates:

1. Mark the hole: Always mark the spot before drilling to avoid misunderstandings.

2. Start with a small hole: Begin by drilling a small pilot hole using a small drill bit. This will help guide the larger drill bit and prevent it from slipping.

3. Hold it with clamps: Secure the stainless steel plate in place using clamps to prevent it.

4. Deburr the hole: After drilling the pilot hole, use a deburring tool to remove any sharp edges around the hole.

5. Drill at slow speed: Using a slow speed setting on your drill is important to avoid risk.

6. Protect eyes: Always wear protective eyewear when drilling through stainless steel plates. It protects your eyes from any mishaps.

Key takeaways:

After reviewing this, it is clear that choosing the right drill bit for steel is crucial for achieving accurate results. Several types of drill bits are available, and Each type has a unique application and can be used for specific tasks.

For those looking to purchase reliable drill bits for steel, L&T-SuFin is an excellent platform. With the right tools and techniques, drilling through steel can be done easily and accurately.