Aluminum, Brass, Bronze, Copper — highest speed range, generally free-cutting.
| Material | Turning / Facing (m/min) | Grooving (m/min) | Drilling (m/min) | Feed (mm/rev) | Grade (ISO) | Coolant |
|---|---|---|---|---|---|---|
| Aluminum — Wrought (6061, 6063, 2011) | 250 – 500 | 150 – 250 | 80 – 150 | 0.15 – 0.40 | N · Uncoated/PCD | Optional |
| Aluminum — Cast / High-Si (LM6, A380) | 150 – 350 | 100 – 200 | 60 – 120 | 0.10 – 0.30 | N · PCD preferred | Flood recommended |
| Brass — Free Cutting (CZ121) | 150 – 300 | 100 – 180 | 60 – 120 | 0.15 – 0.35 | N | Optional |
| Bronze — Phosphor Bronze | 100 – 220 | 80 – 150 | 50 – 100 | 0.10 – 0.30 | N | Optional |
| Copper — Pure | 100 – 200 | 70 – 130 | 40 – 90 | 0.10 – 0.25 | N | Flood — BUE risk |
Mild steel, medium carbon, alloy steel — the most common shop material.
| Material | Turning / Facing (m/min) | Grooving (m/min) | Drilling (m/min) | Feed (mm/rev) | Grade (ISO) | Coolant |
|---|---|---|---|---|---|---|
| Mild Steel (EN8, C45) | 120 – 180 | 80 – 120 | 60 – 100 | 0.15 – 0.30 | P | Flood / Semi-synthetic |
| Medium Carbon Steel (EN9, EN19) | 100 – 160 | 65 – 100 | 50 – 90 | 0.12 – 0.25 | P | Flood |
| Alloy Steel (EN24, EN31) | 80 – 140 | 55 – 90 | 40 – 75 | 0.10 – 0.25 | P | Flood, high-pressure preferred |
| Free Cutting Steel (EN1A) | 150 – 250 | 100 – 160 | 70 – 120 | 0.15 – 0.40 | P | Optional |
Austenitic, ferritic, martensitic, duplex — work-hardening risk, coolant mandatory.
| Material | Turning / Facing (m/min) | Grooving (m/min) | Drilling (m/min) | Feed (mm/rev) | Grade (ISO) | Coolant |
|---|---|---|---|---|---|---|
| Austenitic SS (304, 316) | 80 – 130 | 50 – 85 | 35 – 65 | 0.10 – 0.25 | M | Flood — Mandatory |
| Ferritic SS (430) | 100 – 150 | 65 – 100 | 45 – 80 | 0.12 – 0.30 | M | Flood — Mandatory |
| Martensitic SS (410, 420) | 70 – 120 | 45 – 80 | 35 – 60 | 0.10 – 0.25 | M | Flood — Mandatory |
| Duplex SS (2205) | 60 – 100 | 40 – 65 | 25 – 50 | 0.08 – 0.20 | M | High-Pressure Flood |
Grey iron, SG / ductile iron — usually machined dry.
| Material | Turning / Facing (m/min) | Grooving (m/min) | Drilling (m/min) | Feed (mm/rev) | Grade (ISO) | Coolant |
|---|---|---|---|---|---|---|
| Grey Cast Iron (GCI / GG25) | 90 – 180 | 60 – 100 | 40 – 80 | 0.15 – 0.40 | K | Dry / Optional |
| SG / Ductile Iron | 80 – 150 | 55 – 90 | 35 – 70 | 0.15 – 0.35 | K | Optional |
Tool steel (annealed) and hardened steel above 45 HRC — CBN tooling for hardened grades.
| Material | Turning / Facing (m/min) | Grooving (m/min) | Drilling (m/min) | Feed (mm/rev) | Grade (ISO) | Coolant |
|---|---|---|---|---|---|---|
| Tool Steel — Annealed (D2, H13) | 60 – 100 | 40 – 65 | 25 – 50 | 0.10 – 0.20 | P / H | Flood |
| Hardened Steel >45 HRC | 60 – 150 | 40 – 90 | — | 0.05 – 0.15 | H · CBN Insert | Dry preferred |
Titanium, Inconel, Hastelloy — difficult-to-cut, low speed, rigid setup required.
| Material | Turning / Facing (m/min) | Grooving (m/min) | Drilling (m/min) | Feed (mm/rev) | Grade (ISO) | Coolant |
|---|---|---|---|---|---|---|
| Titanium Alloy (Ti6Al4V) | 40 – 70 | 25 – 40 | 15 – 30 | 0.08 – 0.15 | S | High-Pressure — Mandatory |
| Inconel 718 | 20 – 40 | 15 – 25 | 8 – 18 | 0.05 – 0.15 | S | High-Pressure — Mandatory |
| Inconel 625 | 15 – 35 | 12 – 22 | 8 – 15 | 0.05 – 0.12 | S | High-Pressure — Mandatory |
| Hastelloy C276 | 15 – 30 | 10 – 20 | 7 – 14 | 0.05 – 0.12 | S | High-Pressure — Mandatory |