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Factory Direct

HSS M2 / M42

High-speed lines, thin film, long production runs — M42 (cobalt) for heat resistance at very high line speeds.

What it is

HSS M2 / M42 is one of the seven grades we keep in stock and machine every week. Hardness HRC 62–66, wear resistance Very high, toughness Medium. Best suited to high-speed lines, thin film, long production runs.

HardnessHRC 62–66
Wear resistanceVery high
ToughnessMedium
Best forHigh-speed lines, thin film, long production runs
Our noteM42 (cobalt) for heat resistance at very high line speeds.

Where it wins and where it loses

Choose it when

  • Your blades fail by wearing out, not by chipping
  • You need HRC 62–66 and want it written on the quote
  • The application fits high-speed lines, thin film, long production runs

Look elsewhere when

  • The blade is chipping or cracking — go tougher, not harder
  • You need corrosion resistance — use 440C stainless
  • Line speed is very high — HSS or carbide holds hardness better

How we work it

HSS M2 / M42 is vacuum hardened and tempered in-house, then ground on CNC and surface grinders. Hardness is checked on every piece before it is packed. If your drawing calls for a different hardness window, we will tell you whether it is achievable and what it costs in toughness.

Materials used for this blade

Circular & Slitting Knives
Circular & Slitting Knives

Precision rotary knives for film, foil, paper and lithium battery electrode slitting

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Long & Shearing Knives
Long & Shearing Knives

Long straight knives for paper cutters, shearing machines and scrap cutting

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Slitting Line Knives
Slitting Line Knives

Circular slitting and rotary shear knives for steel, stainless, copper and aluminium strip

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Bag-Making & Packaging Knives
Bag-Making & Packaging Knives

Cutting, sealing and perforating blades for VFFS, HFFS and pouch-making machines

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Frequently asked questions

High-speed lines, thin film, long production runs. Hardness HRC 62–66, wear resistance Very high, toughness Medium.
M42 (cobalt) for heat resistance at very high line speeds. Tell us the material you cut, your line speed and how the current blade fails, and we will say plainly whether this grade is right or wrong for you.
Yes — we machine all seven grades in-house. Send a drawing or a used sample and we will quote it with the heat treatment that fits.