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This guide will help you find the best cobalt drill bits for turning metal into Swiss cheese. BEST OVERALL: DeWalt Industrial Cobalt Alloy Steel Set RUNNER-UP: Irwin 29-Piece Cobalt...
Best Drill Bits for Metal: Our Top 5 Picks. Best for Hardened Steel: Drill America D/A29J-CO-PC Cobalt Drill Bit Set; Most Versatile: BOSCH BL21A Black Oxide Metal Drill Bit Set; Best for Stainless Steel: DEWALT Cobalt Alloy Steel Drill Bit Set; Best Step Drill Bits: IRWIN Step Drill Bit Set
Our best Cobalt drill bits for metal drilling are made from an alloy of 8% cobalt (M42). You can also find these bits with a 5% cobalt blend (M35). Since the cobalt is blended into the steel, it doesn’t wear away like a titanium or black oxide coating.
Runner-Up: Bosch CO21B 21-Piece Set. Budget-Friendly Option: DeWalt 14-Piece Cobalt Drill Bit Set. Top Pick: Irwin M35 Cobalt Steel Drill Bit Set. This Irwin drill bit set contains 29 bits made from industrial grade cobalt steel. The bits range in sizes from 1/16- to 1/2-inch in 1/64-inch increments and have 135-degree split-point tips.
With a heavy emphasis on durability, the Stroton Metric M42 8% Cobalt Twist Drill Bits Set is a good choice for working with stainless steel and hard metal. The three-step design allows these cobalt bits to cut through numerous other materials, including plastic and aluminum.
When you need to put holes in hardened steel, the best bet is a cobalt drill bit. Cobalt drill bits come in different sets that allow you to customize and bring precision to your projects. They can cut through aluminum, cast iron, steel, plastic, hardened carbon, and many more materials.
Cobalt Drill Bits: A Robust Alternative. Another excellent choice for drilling hardened steel or to drill holes in general is cobalt drill bits. These bits, made with a significant percentage of cobalt, are incredibly resilient and effective at maintaining their sharpness.
UPGRADE PICK: Irwin 3018002 29-Piece Cobalt Alloy Steel Drill Bits; BEST STEP-DRILLING BITS: Comoware 5-Piece Titanium Coated Step Drill Bit Set; BEST HEAVY-DUTY: Drill Hulk ¼-Inch Cobalt...
Cobalt drill bits are highly appropriate for drilling through both high-density and light-gauge metals, maintaining precision for a long time. So, buying the best cobalt drill bit set will ensure versatile operation over a wide range of materials with enduring and sturdy service.
Which one is better? The two are very different in a few ways, but the most important difference is in the metal used to make the drill bits. Difference Between Cobalt and Titanium Drill Bits. Both titanium and cobalt drill bits are made of high-speed steel alloy steel.