CNC Thread Grinding Spring Steel from VT machining delivers precision Spring Steel parts produced to your exact drawing. Thread grinding produces precise, high-finish threads on hardened parts and lead screws, and we tune every parameter to the behaviour of Spring Steel, which is high yield strength and elastic recovery.
CNC Thread Grinding Capability for Spring Steel
- Pitch accuracy to grade 3
- Hardened-part threading
- Lead screws & gauges
- Fine surface finish
Spring Steel Material Data
| Density | 7.85 g/cm³ |
|---|---|
| Tensile strength | 1200–1700 MPa |
| Yield strength (0.2%) | 1000–1500 MPa |
| Hardness | 44–50 HRC (tempered) |
| Melting point | 1425 °C |
| Thermal conductivity | 46 W/m·K |
| Thermal expansion | 11.4 ×10⁻⁶/K |
| Electrical conductivity | 8% |
| Machinability (C36000 = 100%) | 40% (annealed); grind or EDM when hardened |
| Grades we run | 1074, 1095, 65Mn, 60Si2Mn, 301 spring temper, 17-7PH |
Published typical values for 1095 / 65Mn. Other grades in the family differ — the certificate supplied with your order carries the actual heat-lot figures.
Springback. Formed features are over-bent by a calculated amount; on flat springs we etch or wire-EDM instead of punching so the temper is untouched.
How CNC Thread Grinding Spring Steel Works
An abrasive wheel removes a fine, controlled layer from the Spring Steel part. Wheel specification, dressing interval, infeed and coolant are matched to the alloy's hardness so the surface is not burned or left with residual stress.
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 Thread Grinding Spring Steel
| Feature | Standard | Precision |
|---|---|---|
| Size (OD, ID, thickness) | ±0.005 mm | ±0.002 mm |
| Flatness over 100 mm | 0.010 mm | 0.003 mm |
| Parallelism | 0.010 mm | 0.003 mm |
| Roundness | 0.005 mm | 0.002 mm |
| Squareness | 0.010 mm | 0.005 mm |
| Surface finish | Ra 0.4 µm | Ra 0.1 µm |
| Workpiece hardness | up to 62 HRC | up to 65 HRC |
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.
Working with Spring Steel
Spring Steel offers a useful combination of properties: it is high yield strength and elastic recovery. Those characteristics shape how we approach grinding — from tool and parameter selection to work-holding and coolant.
If your application is sensitive to alloy condition, we agree the specification in writing and document it. Stock is sourced from reputable suppliers so what you order is what you receive.
CNC Thread Grinding Quality & Inspection
Consistent quality comes from disciplined process control. Critical dimensions on Spring Steel parts are checked in-process and verified at final inspection using calibrated instruments and, where required, CMM measurement. Full documentation — dimensional reports, mill certs, FAIR — is available when your programme needs it.
Design Tips for CNC Thread Grinding Spring Steel
A few design choices make a real difference to cost and quality. Allowing adequate grind stock, specifying realistic flatness over the true datum, and relieving corners help us hit tight tolerances on Spring Steel efficiently. If you send your model early, we will return practical DFM feedback before you commit to production.
CNC Thread Grinding Tolerances & Surface Finish
Ground Spring Steel reaches single-micron tolerances on size, flatness and parallelism, with surface finishes down to Ra 0.1–0.4 µm — and a near-mirror finish on suitable alloys.
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.
Secondary Operations & Finishing
We complete Spring Steel components with the secondary steps your drawing calls for. We arrange heat treatment, surface treatment, marking and assembly as needed. Tell us the final spec and we will plan the full route so parts arrive ready to use.
Applications of CNC Thread Grinding Spring Steel
CNC Thread Grinding of Spring 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.
How to Order CNC Thread Grinding Spring Steel
Ordering Spring Steel parts is straightforward. Provide the drawing, material, quantity and any certification needs. Our engineers reply — in English — with feasibility, pricing and a realistic lead time, usually within one business day.
Parts We Have Run in Spring Steel
Three representative CNC Thread Grinding Spring Steel jobs, with the callouts that actually drove the process plan. Yours will differ — these are here so you can judge whether your part is in our range before you spend time on an RFQ.
Mould insert
- Material
- Spring Steel
- Size
- 80 × 60 × 25 mm
- Key callouts
- Flatness 0.003 mm, squareness 0.005 mm
- Batch
- 90 pcs
Surface ground on all six faces so the insert seats without shimming.
Ceramic-coated shaft journal
- Material
- Spring Steel
- Size
- Ø45 × 180 mm
- Key callouts
- OD ±0.003 mm, roundness 0.002 mm, Ra 0.2 µm
- Batch
- 150 pcs
Ground after coating; the coating is never the final dimension.
Punch tool
- Material
- Spring Steel
- Size
- Ø10 × 60 mm
- Key callouts
- OD ±0.002 mm, roundness 0.002 mm, Ra 0.1 µm
- Batch
- 300 pcs
Cylindrical ground after hardening to 60 HRC — machining soft would not hold the size.
Finishing Options for Spring Steel
| Finish | Thickness / effect | Why it gets specified |
|---|---|---|
| Deburr / edge break | 0.05–0.3 mm | All parts unless the drawing says otherwise |
| Bead blast | Ra 1.6–3.2 µm | Uniform matt finish, hides tool marks |
| Laser marking | — | Part number, lot code, data matrix |
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 Thread Grinding Spring 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 Spring 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 Thread Grinding
Other Processes for Spring Steel
Send the drawing, the Spring 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
What material thickness or size range suits CNC Thread Grinding Spring Steel?
We machine Spring Steel across a broad size range; share your part envelope for confirmation.
What is the typical lead time and minimum order for CNC Thread Grinding Spring Steel?
CNC Thread Grinding prototypes for Spring 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.
Why is Spring Steel a good choice for CNC Thread Grinding?
Spring Steel is high yield strength and elastic recovery, which makes it well suited to CNC Thread Grinding. We tune the process to the alloy so the finished Spring Steel grinding part meets your dimensional and functional requirements.
Can VT machining make custom Spring Steel parts to my drawing?
Yes. Spring Steel Spring Steel grinding 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 Thread Grinding Spring Steel?
Achievable tolerances for Spring Steel grinding depend on the alloy, geometry and feature size. Grinding routinely holds single-micron tolerances on diameter, flatness and parallelism. Exact figures are confirmed against your drawing callouts.
Does CNC Thread Grinding Spring Steel require dedicated tooling?
Most Spring Steel grinding work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.