2-Flute · TiSiN · HRC55 · Standard Reach
4mm 2-Flute TiSiN Solid Carbide Square End Millfor HRC55 Steel & Stainless
The 2-flute TiSiN variant offers maximum chip clearance for full-slot milling and deep pocketing in steel and stainless steel up to HRC55. Fewer flutes mean lower cutting forces and reduced heat accumulation in the cut, extending tool life in interrupted cuts, thin-wall features, and gang drilling operations. TiSiN coating prevents micro-chipping at high chip loads.
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Reference price
$11.64
Ref. factory price (USD)
Based on rod stock cost as of 2026-03-31. Final quotation may differ.
4mm 2F TiSiN Square EM
L2 15mm · D2 4mm · OAL 75mm
Standard Reach · HRC55
✓ Factory direct pricing
✓ MOQ 1 piece, ships 1–5 days
✓ Custom OAL and helix available
Full Dimensions
Technical Specifications
| Cutter Diameter (D1 h7) | 4 mm |
| Flute Length (L2) | 15 mm |
| Shank Diameter (D2 h6) | 4 mm |
| Overall Length (L1) | 75 mm |
| Number of Flutes | 2 |
| Coating | TiSiN Titanium Silicon Nitride |
| Max Material Hardness | HRC55 |
| Reach Category | Standard (L1/D1 = 18.8×) |
| Helix Angle | 30°–45° (application dependent) |
| End Geometry | Square (flat end) |
| Substrate | K10/K20 Ultra-Fine Grain Carbide |
| Shank Tolerance | h6 |
| MOQ | 1 piece |
| Lead Time (standard) | 1–5 business days |
| Lead Time (custom) | 5–15 business days |
TiSiN · 2 Flute · HRC55
Where This Tool Excels
4mm TiSiN 2F — Recommended Applications
- ▸Die and mould fine detail features
- ▸Aerospace precision component profiling
- ▸Small hydraulic manifold pocketing
- ▸Electronic enclosure and heat-sink machining
Coating Performance
TiSiN — Why It Works
- ▸TiSiN hardness > 3,500 HV — superior to TiAlN
- ▸Excellent thermal stability in steel and stainless
- ▸Low friction coefficient reduces cutting temperature
- ▸Suitable for dry, MQL, or flood coolant environments
Same Diameter, Different Reach
ø4mm TiSiN · 2 Flute · HRC55 — Other Flute Lengths
Same Size, Different Coating
ø4mm / L2 15mm — Other Variants
Order 4mm 2-Flute TiSiN Today
Factory direct. MOQ 1 piece. Pricing confirmed within 4 hours.