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Cylindrical carbide end mill, silver-grey finish, four flutes, half-inch shank

SPEED TIGER

SPEED TIGER ISE1/2 4T Micrograin Carbide Square End Mill 4 Flute .5 inch

SKU CH-JKJF-DNCM5

Micrograin carbide 4-flute square end mill with AlTiBN coating cuts alloy steels up to HRC45 and hardened steels HRC40–45

  • TypeEnd Mills

Option 1/2 In

Class 1 Pack

  • Cuts carbon steels up to 225 HB and alloy steels up to 325 HB with 600 Nano carbide
  • Handles pre-hardened and hardened steels up to HRC 45 thanks to Micro Grain Carbide toughness
  • AlTiBN coating gives superior heat resistance at high cutting speeds over TiAlN, TiN or TiCN
  • Four-flute square-end design in 0.5 inch shank suits general milling across multiple metal types
  • Produced in an ISO 9001 factory for consistent quality at a competitive price

Micrograin Carbide End Mill for Hardened Steels

The SPEED TIGER ISE1/2 4T is a four-flute square end mill cut from micrograin carbide with an AlTiBN coating. It is built for milling carbon steels around HB225, alloy steels between HB225 and 325, pre-hardened steels up to HRC45, hardened steels from HRC40 to 45, and cast iron. The coating provides high-temperature stability and wear resistance at elevated cutting speeds. Machinists and DIYers working with tough alloys will find this cutter suited to general-purpose roughing and finishing.

Check Shank Fit and Machine Rigidity

Verify that your tool holder or collet accepts a 0.5 inch shank diameter before ordering. Ensure the milling machine or router spindle delivers enough rigidity and run-out control for carbide tooling in hard materials. Confirm your work-holding can withstand the forces generated when cutting hardened steels up to HRC45. The AlTiBN coating performs best with proper coolant or mist delivery, so check that your setup can supply it.

Integrates with Standard Imperial Tooling

The 0.5 inch shank fits common ER collets, end-mill holders and shrink-fit systems used in imperial workflows. Four flutes allow higher feed rates than two-flute cutters, freeing up cycle time on production parts. Micrograin carbide and the AlTiBN layer reduce edge wear, extending tool life and lowering change-over frequency. The square end profile leaves a flat bottom, eliminating the need for a separate finishing pass in many pockets and slots.

Highlights

  • Cuts carbon steels up to 225 HB and alloy steels up to 325 HB with 600 Nano carbide
  • Handles pre-hardened and hardened steels up to HRC 45 thanks to Micro Grain Carbide toughness
  • AlTiBN coating gives superior heat resistance at high cutting speeds over TiAlN, TiN or TiCN
  • Four-flute square-end design in 0.5 inch shank suits general milling across multiple metal types
  • Produced in an ISO 9001 factory for consistent quality at a competitive price

Specifications

TypeEnd Mills

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Questions about this item

Does the ISE1/2 4T end mill include any holders or collets, or must they be purchased separately?

The end mill is supplied as a single 1/2 inch shank cutter; tool holders or collets are not included and must be sourced separately.

When should I choose the 4-flute square-end version over a 2-flute or ball-nose option?

Four flutes with a square end give higher feed rates and finer finishes in alloy steels up to HRC45 and hardened steels in the 40–45 HRC range.

What does the AlTiBN coating actually change when the cutter is running in pre-hardened steel around HRC45?

The AlTiBN coating provides better heat resistance than TiAlN, TiN or TiCN, allowing stable high-speed cutting at elevated temperatures.

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