CNC Punching Spring Steel from VT machining delivers precision Spring Steel parts produced to your exact drawing. CNC turret punching shears holes and form features in sheet metal using programmable tooling for fast, repeatable patterns, and we tune every parameter to the behaviour of Spring Steel, which is high yield strength and elastic recovery.
CNC Punching Capability for Spring Steel
- Sheet thickness 0.5–6 mm
- Hole position repeatability ±0.10 mm
- Punch/die clearance set per material
- Louver, emboss and tap-extrude tooling
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 Punching Spring Steel Works
A CNC turret presses hardened punches through the Spring Steel sheet into matching dies. Punch-to-die clearance is set as a percentage of thickness so the cut edge stays clean and burr is minimal.
Programming is driven directly by your 3D model or print. Work-holding, tool selection and the cutting strategy are planned around the critical features and the material before the first chip is cut. First-off inspection confirms the process is centred before production continues.
Achievable Tolerances for CNC Punching Spring Steel
| Feature | Standard | Precision |
|---|---|---|
| Hole position across sheet | ±0.15 mm | ±0.10 mm |
| Hole diameter | ±0.10 mm | ±0.05 mm |
| Overall blank size | ±0.20 mm | ±0.10 mm |
| Minimum hole | 1.0 × thickness | 0.8 × thickness |
| Hole-to-edge distance | 2.0 × thickness | 1.5 × thickness |
| Burr height | 0.08 mm | 0.03 mm (deburred) |
| Sheet thickness range | 0.5–6.0 mm | 0.5–3.0 mm |
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.
CNC Punching Tolerances & Surface Finish
Punched Spring Steel holds hole-position repeatability around ±0.10 mm across the sheet, with consistent hole quality when punch/die clearance is matched to the gauge.
Exact achievable figures depend on the alloy, the feature size and the part geometry. Tell us which dimensions are critical and we will advise feasibility up front.
Working with Spring Steel
As a material, Spring Steel is high yield strength and elastic recovery. Our setup reflects the alloy's machinability so the finished part is accurate and free of avoidable defects.
We verify the exact grade and condition before machining, and traceable mill certs are available on request. We can work to your nominated material source or specification when required.
CNC Punching Quality & Inspection
We control quality throughout the process, not just at the end. In-process checks plus final inspection — including CMM where specified — keep every Spring Steel part to print. Inspection reports, material certificates and first-article documentation can be supplied on request.
Design Tips for CNC Punching Spring Steel
We are happy to suggest design tweaks that improve manufacturability. Keeping hole-to-edge and hole-to-hole distances at least 1.5–2× thickness avoids distortion and tearing in punched Spring Steel. If you send your model early, we will return practical DFM feedback before you commit to production.
Secondary Operations & Finishing
Finished Spring Steel parts can move straight into secondary operations under one roof. Typical add-ons are deburring, passivation, anodising, plating, blasting, polishing and laser marking. We coordinate the whole chain so you receive complete, inspection-ready parts.
Applications of CNC Punching Spring Steel
Customers order CNC Punching Spring Steel components for everything from instrumentation to structural and functional assemblies. Whether you need a single prototype or recurring production volume, the same process discipline applies.
How to Order CNC Punching Spring Steel
Getting a quote is simple. Share your model, the material grade, your quantity and target tolerances. You receive a clear quotation with lead time and honest manufacturability feedback.
Parts We Have Run in Spring Steel
Three representative CNC Punching 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.
Cable tray section
- Material
- Spring Steel
- Size
- 1,000 × 150 × 1.5 mm
- Key callouts
- Slot pattern ±0.15 mm
- Batch
- 600 pcs
Nested two-up along the sheet; scrap drops below 12%.
Ventilation panel
- Material
- Spring Steel
- Size
- 600 × 400 × 1.5 mm
- Key callouts
- 1,800 × Ø5 mm holes, position ±0.10 mm
- Batch
- 900 pcs
Punched with a multi-tool head; laser-cutting 1,800 holes would cost several times as much.
Electrical enclosure back plate
- Material
- Spring Steel
- Size
- 500 × 400 × 2 mm
- Key callouts
- Hole pattern ±0.10 mm, tap extrusions M4
- Batch
- 1,200 pcs
Tap extrusions formed in the turret so no separate tapping operation is needed.
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 Punching 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 Punching
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 tolerances can you hold for CNC Punching Spring Steel?
Achievable tolerances for Spring Steel punching depend on the alloy, geometry and feature size. Punching holds hole-position repeatability to around ±0.10 mm. Exact figures are confirmed against your drawing callouts.
What is the typical lead time and minimum order for CNC Punching Spring Steel?
CNC Punching 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.
What is CNC Punching Spring Steel and how is it done?
CNC Punching Spring Steel refers to cNC turret punching shears holes and form features in sheet metal using programmable tooling for fast, repeatable patterns. Applied to Spring Steel — high yield strength and elastic recovery — VT machining produces each part to your CAD drawing, selecting parameters from your tolerance, finish and quantity requirements.
What surface finish is achievable on Spring Steel with CNC Punching?
Surface finish on Spring Steel is controlled to your specification; we confirm the achievable Ra against your callout.
Can VT machining make custom Spring Steel parts to my drawing?
Yes. Spring Steel Spring Steel punching 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.