VT machining provides CNC Honing Steel for customers who need accurate, repeatable Steel components. Because Steel is strong, economical, widely available carbon/alloy grades, we adapt the process to suit — controlling the variables that matter for this alloy.
Process Data for CNC Honing Steel
| Stone | Aluminium oxide or CBN |
|---|---|
| Size tolerance | Ø ±0.002-0.005 mm, roundness ≤0.002 mm |
| Surface finish | Ra 0.1-0.3 µm, 30-45° cross-hatch |
Shown for 1018 Steel, the most common Steel grade we see for CNC Honing. Typical values for 1018 Steel, Cold-drawn; confirmed on the first part.
CNC Honing Capability for Steel
- Bore Ra to 0.1 µm
- Cross-hatch pattern
- Roundness within 0.002 mm
- Hydraulic-bore finishing
Steel material properties, finishing options and grade notes are on our CNC Polishing Steel page.
How CNC Honing Steel Works
Abrasive media or tooling refine the Steel surface in controlled stages, removing the previous step's marks until the target roughness and edge condition are reached.
Every job begins from your CAD model or 2D drawing. Fixturing and tool paths are planned so the most critical dimensions are produced in the most rigid, repeatable setup. Critical dimensions are checked on the first part and monitored through the run.
Achievable Tolerances for CNC Honing Steel
| Feature | Standard | Precision |
|---|---|---|
| Surface roughness | Ra 0.8 µm | Ra 0.05 µm |
| Edge break | 0.1–0.3 mm | 0.05 ±0.02 mm |
| Material removed | 0.02 mm | 0.005 mm |
| Bore roundness after honing | 0.005 mm | 0.002 mm |
| Cross-hatch angle | 45° ±10° | 45° ±5° |
| Cosmetic grade | uniform satin | mirror, no visible lines |
| Masking of datum faces | on request | standard |
Standard is what a normal quotation assumes. Precision is available on nominated features and is priced separately, because it needs extra setups, in-process gauging and CMM verification. Call out only the features that need it — blanket-tightening a drawing is the single most common reason a quote comes back expensive.
Design Tips for CNC Honing Steel
A few design choices make a real difference to cost and quality. Telling us the target Ra, the cosmetic faces and any masking needs lets us finish Steel efficiently without over-processing. If you send your model early, we will return practical DFM feedback before you commit to production.
CNC Honing Tolerances & Surface Finish
Finishing brings Steel to a defined roughness target — from a uniform satin to Ra values as low as 0.05 µm — with controlled, repeatable edge breaks.
Final tolerances are governed by the material's behaviour, wall thickness and overall stiffness. We give honest DFM feedback if a callout would be costly or better achieved another way.
Applications of CNC Honing Steel
CNC Honing of Steel supports parts across aerospace, medical, automotive, electronics, semiconductor, energy and general industrial sectors. We scale from one-off prototypes to ongoing production while holding the same quality.
Typical Steel Parts for CNC Honing
Illustrative examples of CNC Honing Steel parts and the callouts that usually drive the process plan. They show the kind of work that fits this process; they are not specific customer orders.
Passivated stainless fitting
- Material
- Steel
- Size
- Ø18 × 40 mm
- Key callouts
- ASTM A967 citric passivation, no free iron
- Batch
- 5,000 pcs
Passivated after all machining, then tested with a copper sulphate check.
Hydraulic bore
- Material
- Steel
- Size
- Ø32 × 200 mm
- Key callouts
- Ra 0.4 µm cross-hatch 45°, roundness 0.003 mm
- Batch
- 600 pcs
Honed in three stages; the cross-hatch is what holds the oil film.
Sealing face
- Material
- Steel
- Size
- Ø60 mm face
- Key callouts
- Ra 0.2 µm, flatness 0.005 mm
- Batch
- 1,000 pcs
Lapped after grinding; the seal spec is a roughness number, not a dimension.
No drawing yet? Build one in the browser.
Set the metal, dimensions and features, watch the 3D model update as you type, then switch to the 2D sheet to add dimensions and tolerances. Download it or send it straight to us with your RFQ.
What We Need to Quote CNC Honing Steel
- GeometrySTEP or IGES for the 3D model, plus a PDF drawing if you have tolerance callouts. A dimensioned sketch is enough to start.
- MaterialThe exact Steel grade and condition — temper, heat-treat state or hardness. If you are not sure, tell us the function and we will suggest one.
- QuantityPrototype count and the expected annual volume. Both change how the part is made and therefore what it costs.
- TolerancesWhich features are critical. Everything else runs to our standard tolerance, which is what keeps the price sensible.
- FinishSurface treatment, cosmetic requirements, and any faces that must be masked.
- DocumentsWhether you need a material certificate, dimensional report, FAIR or PPAP with the shipment.
Missing something from the list is not a problem — send what you have. We will come back with the specific questions rather than a generic form.
Other Metals for CNC Honing
Other Processes for Steel
Send the drawing, the Steel grade and the quantity. You get pricing, lead time and any DFM notes back — usually within one business day.
Request a QuoteFrequently Asked Questions
Which industries use CNC Honing Steel parts?
CNC Honing Steel parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise Steel components are required.
Why is Steel a good choice for CNC Honing?
Steel is strong, economical, widely available carbon/alloy grades, which makes it well suited to CNC Honing. We tune the process to the alloy so the finished Steel finishing part meets your dimensional and functional requirements.
What is the typical lead time and minimum order for CNC Honing Steel?
CNC Honing prototypes for 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.
What material thickness or size range suits CNC Honing Steel?
We machine Steel across a broad size range; share your part envelope for confirmation.
What surface finish is achievable on Steel with CNC Honing?
Our finishing processes refine Steel surfaces to Ra values as low as 0.05 µm for cosmetic or sealing faces.
Can VT machining make custom Steel parts to my drawing?
Yes. Steel finishing 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.