VT machining offers CNC Turning for D3 Tool Steel (UNS T30403 / 1.2080 / SKD1), typically supplied annealed or hardened. Higher carbon than D2 for maximum wear but lower toughness.
CNC Turning Notes for D3 Tool Steel
D3 Tool Steel turns with good chip control at standard cutting data.
For estimating, a 100 × 100 × 10 mm block of D3 Tool Steel weighs about 0.77 kg.
Starting Parameters for CNC Turning D3 Tool Steel
| Cutting speed (carbide) | 75-130 m/min |
|---|---|
| Feed | 0.08-0.25 mm/rev |
| Spindle speed, Ø25 mm bar | 950-1660 rpm |
| Insert / tool class | ISO P — CVD-coated carbide |
| Coolant | Emulsion; neat oil for tapping |
Starting values for D3 Tool Steel, Annealed or hardened; optimised on the first article.
D3 Tool Steel Data Relevant to CNC Turning
| Equivalent designations | UNS T30403 / 1.2080 / SKD1 |
|---|---|
| Key composition | C ~2.1%, Cr ~12% |
| Typical supply condition | Annealed or hardened |
| Hardness (typical) | Up to ~64 HRC |
| Machinability rating | 40% (AISI B1112 = 100%) |
Typical values; we work to your drawing and mill certificate.
How D3 Tool Steel Differs
Higher carbon than D2 for maximum wear but lower toughness.
Typical applications: Drawing dies, shear blades.
D3 Tool Steel vs Similar Grades
| D3 Tool Steel | D2 Tool Steel | H13 Tool Steel | A2 Tool Steel | |
|---|---|---|---|---|
| Key composition | C ~2.1%, Cr ~12% | C ~1.5%, Cr ~12%, Mo, V | C ~0.4%, Cr ~5%, Mo ~1.3%, V ~1% | C ~1%, Cr ~5%, Mo ~1% |
| Hardness | Up to ~64 HRC | ~255 HB annealed; 58-62 HRC hardened | ~230 HB annealed; 44-52 HRC hardened | ~250 HB annealed; 57-62 HRC hardened |
| Machinability % | 40 | 45 | 70 | 65 |
| Typical use | Drawing dies, shear blades | Cutting dies, slitters, wear parts | Die-casting dies, extrusion tools, forging dies | Blanking dies, punches, gauges |
More on CNC Turning Alloy Steel
Finishing options, quality documentation and general cnc turning guidance for all alloy steel grades are on our CNC Turning Alloy Steel page.
No drawing yet? Sketch the part in our free 3D + 2D builder and send it with your RFQ.
Quoting CNC Turning D3 Tool Steel
Send a STEP/IGES model or PDF drawing, confirm D3 Tool Steel and its condition (we usually see it supplied annealed or hardened), the quantity, critical tolerances and any finish or certificate requirements.
D3 Tool Steel in Other Processes
Related
Send the drawing, the D3 Tool Steel condition and the quantity — pricing and lead time come back the same or next business day.
Request a QuoteFrequently Asked Questions
Which industries use CNC Turning D3 Tool Steel parts?
CNC Turning D3 Tool Steel parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise D3 Tool Steel components are required.
What is CNC Turning D3 Tool Steel and how is it done?
CNC Turning D3 Tool Steel refers to cNC turning rotates the workpiece against a single-point tool to produce cylindrical features, threads and grooves. Applied to D3 Tool Steel — wear-resistant and hardenable for tooling — VT machining produces each part to your CAD drawing, selecting parameters from your tolerance, finish and quantity requirements.
Why is D3 Tool Steel a good choice for CNC Turning?
D3 Tool Steel is wear-resistant and hardenable for tooling, which makes it well suited to CNC Turning. We tune the process to the alloy so the finished D3 Tool Steel turning part meets your dimensional and functional requirements.
What surface finish is achievable on D3 Tool Steel with CNC Turning?
Surface finish on D3 Tool Steel is controlled to your specification; we confirm the achievable Ra against your callout.
Can VT machining make custom D3 Tool Steel parts to my drawing?
Yes. D3 Tool Steel turning is made to order from your CAD/2D drawing. Share your geometry, material grade, tolerance and quantity and we will confirm feasibility, lead time and pricing.
What tolerances can you hold for CNC Turning D3 Tool Steel?
Achievable tolerances for D3 Tool Steel turning depend on the alloy, geometry and feature size. Turning holds diameter tolerances to around ±0.005 mm with concentricity within 0.01 mm. Exact figures are confirmed against your drawing callouts.