Horn S312.0300.52 TF45 System 312 Carbide Grooving Insert
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The Paul Horn GmbH S312.0300.52 TF45 is a new, solid carbide triangular grooving insert belonging to Horn's System 312 platform, designed for external and internal grooving, copy turning, side turning, and partial-cut operations on CNC lathes. Decoded from the part number: "S312" identifies the System 312 insert family; "0300" indicates a 3.00 mm groove width; "52" encodes the geometry/chipbreaker variant; and "TF45" is Horn's PVD-coated submicron carbide grade offering high hot hardness and wear resistance suited to moderate-to-high cutting speeds on steel, stainless, and difficult-to-machine alloys. The triangular insert body features three usable cutting edges, a central through-hole for screw clamping, and precision-ground flanks for accurate, repeatable seating in compatible Horn System 312 toolholders. TF45's PVD TiAlN-based coating delivers low friction and oxidation resistance, extending tool life in dry or minimum-quantity lubrication (MQL) machining environments.
Product Specifications
| Brand | Paul Horn GmbH (Horn) |
| Part Number (MPN) | S312.0300.52 TF45 |
| Insert System | Horn System 312 |
| Insert Shape | Triangular (3 cutting edges) |
| Groove Width | 3.00 mm |
| Geometry / Chipbreaker | 52 |
| Carbide Grade | TF45 |
| Coating | PVD TiAlN |
| Substrate | Submicron solid carbide |
| Applications | Grooving, copy turning, side turning, partial-cut |
| Compatible Toolholder System | Horn System 312 toolholders |
| Mounting | Central screw clamp (through-hole) |
| Condition | New |