Need reliable CNC Plasma Cutting 4130 Alloy Steel? VT machining machines 4130 Alloy Steel to tight tolerances and consistent quality. As a material, 4130 Alloy Steel is high-strength and hardenable; we adapt feeds, speeds and tooling to suit.
CNC Plasma Cutting Capability for 4130 Alloy Steel
- Cr-Mo / Ni-Cr-Mo grades
- High strength & hardenability
- Tolerance to ±0.01 mm
- Heat-treatable to 30–55 HRC
4130 Alloy Steel Material Data
| Density | 7.85 g/cm³ |
|---|---|
| Tensile strength | 655–1020 MPa |
| Yield strength (0.2%) | 415–900 MPa |
| Hardness | 197–302 HB |
| Melting point | 1416 °C |
| Thermal conductivity | 42.6 W/m·K |
| Thermal expansion | 12.3 ×10⁻⁶/K |
| Electrical conductivity | 8% |
| Machinability (C36000 = 100%) | 65% (annealed) |
| Grades we run | 4140, 4340, 8620, 20CrMnTi, 42CrMo4, 20MnCr5 |
Published typical values for 4140 (Q&T). Other grades in the family differ — the certificate supplied with your order carries the actual heat-lot figures.
Heat treatment moves the part. Anything held tighter than ±0.02 mm is machined soft, hardened, then ground or hard-turned to final size.
Machining 4130 Alloy Steel with CNC Plasma Cutting
The machinability of 4130 Alloy Steel is good in annealed condition; machined soft then heat-treated to final hardness. For CNC Plasma Cutting we select tooling, feeds, speeds and coolant to match, keeping the 4130 Alloy Steel workpiece stable and the result accurate.
Because we machine 4130 Alloy Steel regularly, proven settings shorten setup and keep quality repeatable across reorders.
Achievable Tolerances for CNC Plasma Cutting 4130 Alloy Steel
| Feature | Standard | Precision |
|---|---|---|
| Contour dimension | ±0.10 mm | ±0.05 mm |
| Hole diameter | ±0.10 mm | ±0.05 mm |
| Kerf width | 0.20 mm | 0.10 mm |
| Squareness of cut edge | 0.5° | 0.2° |
| Heat-affected zone | 0.15 mm | 0.05 mm (N₂ assist) |
| Minimum hole diameter | 1.2 × thickness | 1.0 × thickness |
| Edge condition | light dross | burr-free, N₂ cut |
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.
Secondary Operations & Finishing
We complete 4130 Alloy 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.
Design Tips for CNC Plasma Cutting 4130 Alloy Steel
A few design choices make a real difference to cost and quality. Keeping holes no smaller than the material thickness, allowing for kerf, and grouping features sensibly improves edge quality and nesting yield on 4130 Alloy Steel. If you send your model early, we will return practical DFM feedback before you commit to production.
CNC Plasma Cutting Quality & Inspection
Consistent quality comes from disciplined process control. Critical dimensions on 4130 Alloy 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.
CNC Plasma Cutting Tolerances & Surface Finish
Laser-cut 4130 Alloy Steel holds contour tolerances around ±0.05 mm depending on thickness, with a narrow kerf and a clean, near burr-free edge.
The tightest tolerances are reserved for the features your drawing flags as critical. Share your tolerance scheme and we will confirm what is realistic before quoting.
Why 4130 Alloy Steel?
Specifying 4130 Alloy Steel for CNC Plasma Cutting 4130 Alloy Steel is usually about its properties: high-strength and hardenable. Tell us the condition you need and we machine to it.
Applications of CNC Plasma Cutting 4130 Alloy Steel
CNC Plasma Cutting of 4130 Alloy 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 Plasma Cutting 4130 Alloy Steel
Ordering 4130 Alloy 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.
Finishing Options for 4130 Alloy Steel
| Finish | Thickness / effect | Why it gets specified |
|---|---|---|
| Through hardening | — | 30–55 HRC, ground afterwards for tight sizes |
| Case hardening (carburise) | 0.3–1.2 mm case | 58–62 HRC surface, tough core |
| Nitride | 0.1–0.5 mm | 900–1100 HV, minimal distortion |
| Black oxide | 1–2 µm | Cosmetic + light corrosion protection |
| Zinc / nickel plate | 5–25 µm | Corrosion protection |
| 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 Plasma Cutting 4130 Alloy 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 4130 Alloy 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.
4130 Alloy Steel in Other Processes
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Send the drawing, the 4130 Alloy Steel condition and the quantity — pricing and lead time come back the same or next business day.
Request a QuoteFrequently Asked Questions
Why is 4130 Alloy Steel a good choice for CNC Plasma Cutting?
4130 Alloy Steel is high-strength and hardenable, which makes it well suited to CNC Plasma Cutting. We tune the process to the alloy so the finished 4130 Alloy Steel cutting part meets your dimensional and functional requirements.
How clean are the edges produced by CNC Plasma Cutting on 4130 Alloy Steel?
Laser cutting leaves 4130 Alloy Steel with a narrow kerf and a clean, near burr-free edge and only a small heat-affected zone.
Can VT machining make custom 4130 Alloy Steel parts to my drawing?
Yes. 4130 Alloy Steel 4130 Alloy Steel cutting 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 is CNC Plasma Cutting 4130 Alloy Steel and how is it done?
CNC Plasma Cutting 4130 Alloy Steel refers to cNC plasma cutting uses an ionized gas jet to sever thicker conductive plate at high speed. Applied to 4130 Alloy Steel — high-strength and hardenable — VT machining produces each part to your CAD drawing, selecting parameters from your tolerance, finish and quantity requirements.
What is the typical lead time and minimum order for CNC Plasma Cutting 4130 Alloy Steel?
CNC Plasma Cutting prototypes for 4130 Alloy 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.
Which industries use CNC Plasma Cutting 4130 Alloy Steel parts?
CNC Plasma Cutting 4130 Alloy Steel parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise 4130 Alloy Steel components are required.