TTP HARD Drill Bits | Officially SGS Hardness Certified

Independent SGS Rockwell Hardness Test

Choosing the best drill bit for metal means knowing it’s been independently tested. This video shows SGS, a globally recognised leader in materials testing, performing the Rockwell Hardness Test on TTP HARD cobalt drill bits.

The results confirm that our drill bits achieve a Rockwell hardness rating of 66 (HRC) — the perfect balance of hardness and toughness for drilling stainless steel, hardened steel, aluminium, and other tough metals.

Key Highlights from the Video

• Independent Rockwell Hardness Test by SGS

• Confirms TTP HARD drill bits at 66 HRC

• Certification proves durability & reliability

• Ensures bits won’t dull prematurely or snap under load

• Proof of performance for professionals & serious DIYers

Why Hardness Testing Matters
Hardness is one of the most important factors in determining whether a drill bit can cut through tough metals efficiently. Too soft, and the bit wears out quickly. Too brittle, and it snaps under pressure.

The Rockwell Hardness Test (ASTM E18) performed by SGS applies a precisely measured force with a steel or carbide indenter. The penetration depth gives an accurate hardness rating.

TTP HARD cobalt drill bits scored 66 HRC, proving they’re engineered for the perfect hardness-to-toughness balance. This means cleaner drilling, longer life, and consistent performance on the hardest steels.

Unlike most drill bits that never undergo independent certification, TTP HARD drill bits are tested and verified by SGS, giving you the confidence that your tools are built to the highest standard.