Problem: Rapid Tool Failure in Hardened Alloys

Drilling through Stainless Steel (304/316) or high-tensile alloys is a nightmare for standard cutters. The material "work-hardens" as you drill, and the resulting heat can destroy a standard HSS edge in seconds. For industrial buyers, the high frequency of tool replacement isn't just a cost issue—it’s a massive disruption to the production flow.

Cause: Thermal Softening & Cold Welding

Standard steel loses its hardness (HRC) when temperatures exceed 500°C. In hard-metal drilling, the friction at the cutting edge far exceeds this. Furthermore, "gummy" materials like stainless steel tend to stick to the tool (cold welding), which causes the cutting edge to chip and fail prematurely.

Solution: The Cobalt & Nano-Coating Shield

Our HSS-E M35 Cobalt cutters are the answer. By adding 5% Cobalt, we've boosted the "Red Hardness" of the tool. We then apply a Nano-TiAlN (Titanium Aluminum Nitride) coating. This coating creates a ceramic-like thermal barrier that can withstand temperatures up to 900°C, reflecting heat into the chips and away from the tool.

Technical Parameters

• Substrate: HSS-E M35 (5% Cobalt)

• Coating: TiAlN Nano-Coating (Violet/Charcoal)

• Surface Hardness: ~3300 HV

• Max Operating Temp: 900°C

• Tolerance: ISO Class 6H

• Shank Standard: Weldon 19.05mm

Application: Challenging Environments

This series is specifically engineered for the Petrochemical, Nuclear, and Shipbuilding industries. It excels in drilling through thick stainless steel plates, boiler steel, and armored plates where standard M2 cutters would fail instantly.

Selection Guide

If your project involves Stainless Steel or High-Carbon Steel, do not settle for M2. The M35 TiAlN Series is a strategic investment that reduces the "cost-per-hole" by lasting up to four times longer than uncoated alternatives.

Professional FAQ

Q: Can I use this for dry drilling?

A: While the TiAlN coating allows for better heat resistance, we always recommend lubrication to maximize tool life.

Q: What makes Cobalt M35 better than M2?

A: Cobalt allows the steel to remain hard at much higher temperatures, preventing the edge from "rounding off."

Q: Is the coating permanent?

A: The coating is a metallurgical bond. While it eventually wears, it protects the tool during its most critical service life.