HY-MAX Carbide End Mills for High-Hardness Materials
Solid carbide end mills for high-hardness material machining: 2-flute ball nose R0.5–R6.0 mm, 4-flute radius and flat D1.0–D12.0 mm.
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Product information
The HY-MAX high hardness material machining series (catalog L18–L20) covers HYB230 2-flute ball nose (R0.5–R6.0), HYR435 4-flute radius (D1.0–D12.0) and HYE445 4-flute flat (D1.0–D12.0, 45° helix).
Specifications
| Cutter types | HYB230 2-flute ball nose; HYR435 4-flute radius; HYE445 4-flute flat |
|---|---|
| Diameter range | R0.5–R6.0 mm ball nose; D1.0–D12.0 mm radius and flat |
| Intended materials | High-hardness materials |
| Example stock models | HYB230-060120-050-S06; HYR435-060150R0.5-050-S06; HYE445-060160-050-S06 |
Available sizes
Model codes and dimensions reproduced from the Koves 2025 Solid Round Cutting Tools catalog. Stock items are listed in the catalog, not confirmed live — ask us for current availability.
HY-MAX Ball End Mill, 2-Flute, 30° helix
Catalog page 12 · 17 sizes · code HYB230
| Model | Dia. (mm) | Corner radius (mm) | Flute length (mm) | Overall length (mm) | Shank dia. (mm) |
|---|---|---|---|---|---|
| HYB230-010020-050-S04 | 1.0 | R0.5 | 2 | 50 | 4 |
| HYB230-015030-050-S04 | 1.5 | R0.75 | 3 | 50 | 4 |
| HYB230-020040-050-S04 | 2.0 | R1.0 | 4 | 50 | 4 |
| HYB230-030060-050-S04 | 3.0 | R1.5 | 6 | 50 | 4 |
| HYB230-040080-050-S04 | 4.0 | R2.0 | 8 | 50 | 4 |
| HYB230-040080-075-S04 | 4.0 | R2.0 | 8 | 75 | 4 |
| HYB230-050100-050-S06 | 5.0 | R2.5 | 10 | 50 | 6 |
| HYB230-060120-050-S06 | 6.0 | R3.0 | 12 | 50 | 6 |
| HYB230-060120-075-S06 | 6.0 | R3.0 | 12 | 75 | 6 |
| HYB230-060120-100-S06 | 6.0 | R3.0 | 12 | 100 | 6 |
| HYB230-080160-060-S08 | 8.0 | R4.0 | 16 | 60 | 8 |
| HYB230-080160-075-S08 | 8.0 | R4.0 | 16 | 75 | 8 |
| HYB230-080160-100-S08 | 8.0 | R4.0 | 16 | 100 | 8 |
| HYB230-100200-075-S10 | 10 | R5.0 | 20 | 75 | 10 |
| HYB230-100200-100-S10 | 10 | R5.0 | 20 | 100 | 10 |
| HYB230-120240-075-S12 | 12 | R6.0 | 24 | 75 | 12 |
| HYB230-120240-100-S12 | 12 | R6.0 | 24 | 100 | 12 |
HY-MAX Radius End Mill, 4-Flute, 35° helix
Catalog page 13 · 26 sizes · code HYR435
| Model | Dia. (mm) | Corner radius (mm) | Flute length (mm) | Overall length (mm) | Shank dia. (mm) |
|---|---|---|---|---|---|
| HYR435-010030R0.2-050-S04 | 1 | R0.2 | 3 | 50 | 4 |
| HYR435-020050R0.2-050-S04 | 2 | R0.2 | 5 | 50 | 4 |
| HYR435-030070R0.2-050-S04 | 3 | R0.2 | 7 | 50 | 4 |
| HYR435-030070R0.5-050-S04 | 3 | R0.5 | 7 | 50 | 4 |
| HYR435-040100R0.2-050-S04 | 4 | R0.2 | 10 | 50 | 4 |
| HYR435-040100R0.5-050-S04 | 4 | R0.5 | 10 | 50 | 4 |
| HYR435-060150R0.5-050-S06 | 6 | R0.5 | 15 | 50 | 6 |
| HYR435-060150R1.0-050-S06 | 6 | R1.0 | 15 | 50 | 6 |
| HYR435-060150R0.5-075-S06 | 6 | R0.5 | 15 | 75 | 6 |
| HYR435-060150R1.0-075-S06 | 6 | R1.0 | 15 | 75 | 6 |
| HYR435-060150R0.5-100-S06 | 6 | R0.5 | 15 | 100 | 6 |
| HYR435-060150R1.0-100-S06 | 6 | R1.0 | 15 | 100 | 6 |
| HYR435-080200R0.5-060-S08 | 8 | R0.5 | 20 | 60 | 8 |
| HYR435-080200R1.0-060-S08 | 8 | R1.0 | 20 | 60 | 8 |
| HYR435-080200R0.5-075-S08 | 8 | R0.5 | 20 | 75 | 8 |
| HYR435-080200R1.0-075-S08 | 8 | R1.0 | 20 | 75 | 8 |
| HYR435-080200R0.5-100-S08 | 8 | R0.5 | 20 | 100 | 8 |
| HYR435-080200R1.0-100-S08 | 8 | R1.0 | 20 | 100 | 8 |
| HYR435-100250R0.5-075-S10 | 10 | R0.5 | 25 | 75 | 10 |
| HYR435-100250R1.0-075-S10 | 10 | R1.0 | 25 | 75 | 10 |
| HYR435-100250R0.5-100-S10 | 10 | R0.5 | 25 | 100 | 10 |
| HYR435-100250R1.0-100-S10 | 10 | R1.0 | 25 | 100 | 10 |
| HYR435-120300R0.5-075-S12 | 12 | R0.5 | 30 | 75 | 12 |
| HYR435-120300R1.0-075-S12 | 12 | R1.0 | 30 | 75 | 12 |
| HYR435-120300R0.5-100-S12 | 12 | R0.5 | 30 | 100 | 12 |
| HYR435-120300R1.0-100-S12 | 12 | R1.0 | 30 | 100 | 12 |
HY-MAX Flat End Mill, 4-Flute, 45° helix
Catalog page 13 · 16 sizes · code HYE445
| Model | Dia. (mm) | Flute length (mm) | Overall length (mm) | Shank dia. (mm) |
|---|---|---|---|---|
| HYE445-010030-050-S04 | 1.0 | 3 | 50 | 4 |
| HYE445-015040-050-S04 | 1.5 | 4 | 50 | 4 |
| HYE445-020060-050-S04 | 2.0 | 6 | 50 | 4 |
| HYE445-025080-050-S04 | 2.5 | 8 | 50 | 4 |
| HYE445-030080-050-S04 | 3.0 | 8 | 50 | 4 |
| HYE445-040110-050-S04 | 4.0 | 11 | 50 | 4 |
| HYE445-040150-075-S04 | 4.0 | 15 | 75 | 4 |
| HYE445-050130-050-S06 | 5.0 | 13 | 50 | 6 |
| HYE445-060160-050-S06 | 6.0 | 16 | 50 | 6 |
| HYE445-060200-075-S06 | 6.0 | 20 | 75 | 6 |
| HYE445-080200-060-S08 | 8.0 | 20 | 60 | 8 |
| HYE445-080250-100-S08 | 8.0 | 25 | 100 | 8 |
| HYE445-100250-075-S10 | 10.0 | 25 | 75 | 10 |
| HYE445-100300-100-S10 | 10.0 | 30 | 100 | 10 |
| HYE445-120300-075-S12 | 12.0 | 30 | 75 | 12 |
| HYE445-120350-100-S12 | 12.0 | 35 | 100 | 12 |
How to read the model number
The catalog page “Detailed explanation of the model” reads a code left to right as series, cutter type, length mark, flutes, helix angle, cutting diameter, corner radius, cutting length, overall length and shank diameter. The original diagram is reproduced here:
Source: source-excerpts/catalog-2025-pages-3-4-milling-contents-model-code.txt — Original PDF page 4