HPMA-SR
Single-ended insert for profile grooving, with SR radiused cutting edge and INNOT PVD grades.
ISO M
ISO S
Profiling
PVD
★ IT7225 · IT9215
Technical data sheet PDFCutting data, sizes and grades
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Description
Specifications
| Code | Width CW | Corner radius RE | INSL | Available grades |
|---|---|---|---|---|
| HPMA3015-SR | 3.0 mm (±0.025) | 1.5 | 15.3 | IT7125 – IT7225 – IT9205 – IT9215 |
| HPMA4020-SR | 4.0 mm (±0.025) | 2.0 | 15.3 | IT7125 – IT7225 – IT9205 – IT9215 |
| HPMA5025-SR | 5.0 mm (±0.025) | 2.5 | 15.3 | IT7125 – IT7225 – IT9205 – IT9215 |
| HPMA6030-SR | 6.0 mm (±0.025) | 3.0 | 15.3 | IT7125 – IT7225 – IT9205 – IT9215 |
CW = cutting width, RE = corner radius, INSL = insert length (mm).
SR chipbreaker data sheet
| Operation | Profile grooving and copy turning |
| ISO material | M (stainless steels), S (superalloys and titanium) |
| Type | One cutting edge, full-radius tip |
| Tolerance | M |
| Features | Sharp cutting edge with low cutting resistance. The chipbreaker bends the chip in all directions and protects the machined surface; the locating seat ensures high repeatability and accuracy. |
| Compatible toolholders | External grooving toolholders |
Available INNOT grades
| Grade | ISO | Coating | Composition | Application |
|---|---|---|---|---|
| IT7125 | M | PVD | AlTiN | Universal grade for turning stainless steel in continuous and interrupted cuts. Smooth, low-friction coating, high nano-hardness and excellent oxidation resistance. |
| IT7225 ★ | M | PVD | AlTiSiN + TiSiN | First-choice grade for turning stainless steel. Nano-gradient coating on a sub-micron grain substrate: excellent wear resistance and toughness. |
| IT9205 | S | PVD | AlTiN + TiSiN + AlCrN | Highly wear-resistant grade for superalloys. Uniform sub-micron hard phase and alloying elements for greater reliability; excellent thermal stability and oxidation resistance. |
| IT9215 ★ | S | PVD | AlTiN + TiSiN + AlCrN | Universal grade for turning superalloys. Greater toughness and reliability; the multilayer structure limits cracks and protects the coating from flaking and chipping. |
★ Recommended grade for this insert. CVD = chemical vapour deposition coating, PVD = physical vapour deposition coating.
Recommended cutting data
Parting and grooving – cutting speed
Cutting speed Vc (m/min) as a function of feed fn (mm/rev)
| Material | HB | Rm (N/mm²) | IT7225 | IT9205 | IT9215 | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| fn 0.1 | fn 0.3 | fn 0.5 | fn 0.1 | fn 0.2 | fn 0.3 | fn 0.1 | fn 0.2 | fn 0.3 | |||
| NON-ALLOY STEELS | |||||||||||
| C≤0.25% – Annealed | 125 | 428 | 260 | 180 | 120 | – | – | – | – | – | – |
| 0.25<C≤0.55% – Annealed | 190 | 639 | 200 | 140 | 105 | – | – | – | – | – | – |
| 0.25<C≤0.55% – Quenched and tempered | 210 | 708 | 120 | 110 | 100 | – | – | – | – | – | – |
| C>0.55% – Annealed | 190 | 639 | 130 | 120 | 110 | – | – | – | – | – | – |
| C>0.55% – Quenched and tempered | 300 | 1013 | 110 | 95 | 70 | – | – | – | – | – | – |
| Short-chipping – Annealed | 220 | 745 | 120 | 105 | 90 | – | – | – | – | – | – |
| LOW-ALLOY STEELS | |||||||||||
| Annealed | 175 | 591 | 170 | 135 | 120 | – | – | – | – | – | – |
| Quenched and tempered | 300 | 1013 | 105 | 90 | 70 | – | – | – | – | – | – |
| Quenched and tempered | 380 | 1282 | 160 | 80 | 60 | – | – | – | – | – | – |
| STAINLESS STEELS | |||||||||||
| Ferritic / martensitic – Annealed | 200 | 675 | 200 | 150 | 105 | – | – | – | – | – | – |
| Martensitic – Quenched and tempered | 330 | 1114 | 150 | 115 | 70 | – | – | – | – | – | – |
| Austenitic – Solution annealed | 200 | 675 | 185 | 155 | 125 | – | – | – | – | – | – |
| Precipitation-hardening austenitic (PH) | 300 | 1013 | 165 | 135 | 95 | – | – | – | – | – | – |
| Austenitic-ferritic (duplex) | 230 | 778 | 145 | 110 | 85 | – | – | – | – | – | – |
| SUPERALLOYS AND TITANIUM | |||||||||||
| Iron-based – Annealed | 200 | 680 | – | – | – | 70 | 50 | – | 60 | 40 | – |
| Iron-based – Aged | 280 | 940 | – | – | – | 50 | 40 | – | 40 | 30 | – |
| Nickel / cobalt-based – Annealed | 250 | 840 | – | – | – | 50 | 40 | – | 40 | 30 | – |
| Nickel / cobalt-based – Aged | 350 | 1180 | – | – | – | 40 | 30 | – | 35 | 25 | – |
| Nickel / cobalt-based – Cast | 320 | 1080 | – | – | – | 30 | 25 | – | 25 | 20 | – |
| Aged α+β titanium alloys | 375 | 1260 | – | – | – | 50 | 40 | 30 | 40 | 30 | 20 |
| β titanium alloys | 410 | 1400 | – | – | – | 40 | 35 | 30 | 30 | 25 | 20 |
Guide values for machining with coolant. For parting and internal grooving reduce the speed by 30–50%. When parting, as you approach the centre of the part, reduce the feed by 30%.
Tips for use
- Parting off: when approaching the centre reduce the feed by 30% for longer life and a better finish; keep the tool overhang to a minimum.
- External grooving and side turning: with depths over 0.5 mm work in radial passes (up to 0.75 × insert width), retract 0.1 mm, then an axial pass.
- Wide grooves: make side-by-side stepped plunges, then finish the bottom and the flanks.
- Face grooves: start from the largest diameter and move inwards; for finishing machine the bottom and the outer diameter first, then the inner one.
- Internal grooves: work from the inside outwards to help the chip out.
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