Titanium vs Cobalt Drill Bits: Which One Should You Buy?
Titanium-coated bits for general drilling in sheet metal, plastic and drywall, and cobalt M35 and M42 sets for stainless steel, cast iron and hard metal, compared with two example sets on each side.
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Verdict: In the titanium vs cobalt drill bits choice, pick titanium-coated bits for general drilling in sheet metal, plastic and drywall, where the coating keeps the edge sharp. Pick cobalt bits for stainless steel, cast iron and other hard metal, where the M35 or M42 alloy holds up to heat.
A bit that wanders off the mark or goes dull halfway through a hole turns a small job into a long one. Titanium vs cobalt drill bits is the choice that decides how the bit meets the metal: a titanium coating on high-speed steel, or cobalt alloyed into the steel.
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BOSCH CO14B 14-Piece Cobalt Drill Bit Set
A 14-piece M42 cobalt set with 8% cobalt, a thick web-helix design and a case, made for stainless steel, cast iron, titanium and aluminum.
Pros
- M42 alloy with 8% cobalt
- Maker claims 10x life vs. standard bits
- Suits stainless steel, cast iron, titanium and aluminum
- Thick web-helix design for stability
Cons
- Size list names 13 sizes for a 14-piece set
- Warranty covers product defects only, with no term stated
- Largest bit is 1/2 in
- No certification stated
MACXCOIP 13Pcs(1/16"-1/4")
A 13-piece M35 cobalt HSS set from 1/16 in to 1/4 in, with a 135 degree point tip and an index storage case.
Pros
- M35 cobalt HSS for stainless steel and cast iron
- 13 bits from 1/16 in to 1/4 in with an index case
- 135 degree point tip for self-centering
- Hardened and polished bits for sharp cutting
Cons
- No warranty term is stated
- Largest bit is 1/4 in
- M35 alloy, not the M42 alloy of the Bosch set
- No certification stated
IRONANT 5-Piece HSS Step Drill Bit Set for Metal
A 5-piece titanium-coated HSS step-bit set covering 50 hole sizes, with a 118° split-point tip and an aluminum case.
Pros
- Five step bits cover 50 hole sizes
- 118° split-point tip helps the bit self-center
- Titanium-coated HSS for wear resistance
- Aluminum case keeps sizes organized
Cons
- Not recommended for stainless steel or wood
- No warranty term is stated
- Five bits must cover all 50 sizes
- No twist bits included for standard drilling
8 Pack Titanium Coated HSS Twist Drill Bits
An 8-pack of titanium-coated HSS twist bits from 3mm to 10mm, with a hex shank and serrated side cutting.
Pros
- 8 bits cover 3mm to 10mm sizes
- Titanium coating; maker claims 2 times the life of standard bits
- Hex shank fits most electric drills
- Serrated side cutting for chip discharge
Cons
- Largest size is 10mm
- No warranty term is stated
- No storage case is stated in the listing
- Titanium coating, not a cobalt alloy, for hard metal
Side by side
| Titanium drill bits | Cobalt drill bits | Notes | |
|---|---|---|---|
| Coating or alloy | Titanium coating on HSS | M35 or M42 cobalt alloy | Titanium coats HSS; cobalt alloys into the steel |
| Example sets | IRONANT step set and Hariendny twist bits | Bosch CO14B set and MACXCOIP set | Each side has a step or twist example |
| Sizes in the examples | 50 hole sizes and 3mm to 10mm | 1/16 in to 1/2 in and 1/16 in to 1/4 in | Step bits cover hole sizes; twist bits list diameters |
| Hard metal | Stainless steel ruled out on the IRONANT listing | Stainless steel and cast iron stated on both cobalt sets | Only the cobalt listings name stainless steel and cast iron |
| Warranty | No term stated on either titanium listing | Product defects only, no term, on the Bosch listing | No set here states a warranty term |
Example figures are manufacturer rated, as published on each listing and collected 6 November 2026.
Titanium vs cobalt drill bits: what separates the two sides
The split is in the metal itself. Titanium bits are high-speed steel with a titanium coating on the cutting edge, and the makers say the coating keeps the edge sharp longer. Cobalt bits are high-speed steel with cobalt in the alloy, M35 in one example set and M42 in the other, and the makers say the alloy stands up to heat and hard metal. The cobalt listings name stainless steel and cast iron, while one titanium listing rules stainless steel out.
How the titanium side works
The titanium side covers general drilling. The IRONANT set is a step-bit set: 5 bits that cover 50 hole sizes in sheet metal, aluminum, iron and plastic, with a 118° split-point tip that helps the bit self-center. The Hariendny set is a twist-bit set: 8 titanium-coated bits from 3mm to 10mm, with a hex shank and serrated side cutting that the maker says clears chips.
How the cobalt side works
The cobalt side is built for hard metal. The Bosch set is a 14-piece M42 set with 8% cobalt, and the maker claims 10x life vs. standard bits, with a thick web-helix design for stability. The MACXCOIP set is a 13-piece M35 set with a 135 degree point tip that the maker says self-centers. Both cobalt listings name stainless steel and cast iron, and both come with a case.
Choose titanium if
- You drill sheet metal, plastic or drywall
- You want step bits that cover 50 hole sizes with 5 bits
- You want a hex shank set, 3mm to 10mm
- You want a coated edge for general work
Choose cobalt if
- You drill stainless steel or cast iron
- You want M35 or M42 cobalt alloy
- You want a set with a case
- You want a 135 degree point tip that self-centers
Example drill bits
For more choices, see the best drill bit set, and the cobalt vs HSS drill bits comparison.
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Garage Fit Check
- Match the bit to the material before the first hole: the IRONANT listing rules out stainless steel and wood.
- The IRONANT set weighs 1.0 lb, and its aluminum case holds the 5 step bits.
- The Bosch set measures 7.2 x 5.6 x 1.8 in and the MACXCOIP set 4.13 x 3.03 x 0.67 in, so both fit a shelf or a drawer.
- Count the Bosch sizes when the set arrives: the size list names 13 sizes for a set the title calls 14-piece.
- Check the shank before chucking: the Hariendny bits use a hex shank.
FAQ: garage tools
Which is better for stainless steel, titanium or cobalt drill bits?
Cobalt, on these listings. Both cobalt sets name stainless steel, while the IRONANT titanium listing says it is not recommended for stainless steel.
What sizes do the example sets cover?
The IRONANT step set covers 50 hole sizes with 5 bits, the Hariendny set runs from 3mm to 10mm, the Bosch set runs from 1/16 in to 1/2 in, and the MACXCOIP set runs from 1/16 in to 1/4 in.
Do any of these drill bit sets state a warranty term?
No. The Bosch listing covers product defects only, with no term stated, and no other listing here states a warranty term.
Are cobalt drill bits the same as titanium drill bits?
No. Titanium bits are high-speed steel with a titanium coating, while cobalt bits are high-speed steel with cobalt in the alloy: M35 in the MACXCOIP set and M42 with 8% cobalt in the Bosch set.
Related: the best drill bit set, the cobalt vs HSS drill bits comparison and the best hex shank drill bit set.
