VT machining offers CNC Turning for D2 Tool Steel (UNS T30402 / 1.2379 / SKD11), typically supplied annealed or hardened. High-chromium, high wear resistance; harder to grind than A2.
CNC Turning Notes for D2 Tool Steel
D2 Tool Steel turns with good chip control at standard cutting data.
For estimating, a 100 × 100 × 10 mm block of D2 Tool Steel weighs about 0.77 kg.
Starting Parameters for CNC Turning D2 Tool Steel
| Cutting speed (carbide) | 80-145 m/min |
|---|---|
| Feed | 0.08-0.25 mm/rev |
| Spindle speed, Ø25 mm bar | 1020-1850 rpm |
| Insert / tool class | ISO P — CVD-coated carbide |
| Coolant | Emulsion; neat oil for tapping |
Starting values for D2 Tool Steel, Annealed or hardened; optimised on the first article.
D2 Tool Steel Data Relevant to CNC Turning
| Equivalent designations | UNS T30402 / 1.2379 / SKD11 |
|---|---|
| Key composition | C ~1.5%, Cr ~12%, Mo, V |
| Typical supply condition | Annealed or hardened |
| Hardness (typical) | ~255 HB annealed; 58-62 HRC hardened |
| Machinability rating | 45% (AISI B1112 = 100%) |
Typical values; we work to your drawing and mill certificate.
How D2 Tool Steel Differs
High-chromium, high wear resistance; harder to grind than A2.
Typical applications: Cutting dies, slitters, wear parts.
D2 Tool Steel vs Similar Grades
| D2 Tool Steel | A2 Tool Steel | D3 Tool Steel | H13 Tool Steel | |
|---|---|---|---|---|
| Key composition | C ~1.5%, Cr ~12%, Mo, V | C ~1%, Cr ~5%, Mo ~1% | C ~2.1%, Cr ~12% | C ~0.4%, Cr ~5%, Mo ~1.3%, V ~1% |
| Hardness | ~255 HB annealed; 58-62 HRC hardened | ~250 HB annealed; 57-62 HRC hardened | Up to ~64 HRC | ~230 HB annealed; 44-52 HRC hardened |
| Machinability % | 45 | 65 | 40 | 70 |
| Typical use | Cutting dies, slitters, wear parts | Blanking dies, punches, gauges | Drawing dies, shear blades | Die-casting dies, extrusion tools, forging dies |
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 D2 Tool Steel
Send a STEP/IGES model or PDF drawing, confirm D2 Tool Steel and its condition (we usually see it supplied annealed or hardened), the quantity, critical tolerances and any finish or certificate requirements.
D2 Tool Steel in Other Processes
Related
Send the drawing, the D2 Tool Steel condition and the quantity — pricing and lead time come back the same or next business day.
Request a QuoteFrequently Asked Questions
What is CNC Turning D2 Tool Steel and how is it done?
CNC Turning D2 Tool Steel refers to cNC turning rotates the workpiece against a single-point tool to produce cylindrical features, threads and grooves. Applied to D2 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.
Which industries use CNC Turning D2 Tool Steel parts?
CNC Turning D2 Tool Steel parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise D2 Tool Steel components are required.
Why is D2 Tool Steel a good choice for CNC Turning?
D2 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 D2 Tool Steel turning part meets your dimensional and functional requirements.
What is the typical lead time and minimum order for CNC Turning D2 Tool Steel?
CNC Turning prototypes for D2 Tool Steel can be produced quickly and scaled to series production. Send your drawing and quantity and we will advise lead time and any minimum order.
Does CNC Turning D2 Tool Steel require dedicated tooling?
Most D2 Tool Steel turning work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.
What surface finish is achievable on D2 Tool Steel with CNC Turning?
Surface finish on D2 Tool Steel is controlled to your specification; we confirm the achievable Ra against your callout.