VT machining offers CNC Milling for 1018 Steel (UNS G10180 / C15 / S20C), typically supplied cold-drawn. The most common low-carbon machining bar; good finish and carburisable.
CNC Milling Notes for 1018 Steel
1018 Steel mills well with conventional strategies; finishing passes are planned to meet flatness and finish callouts.
For estimating, a 100 × 100 × 10 mm block of 1018 Steel weighs about 0.79 kg.
Starting Parameters for CNC Milling 1018 Steel
| Cutting speed (carbide) | 190-330 m/min |
|---|---|
| Feed per tooth | 0.035-0.123 mm |
| Spindle speed, Ø10 mm end mill | 6050-10500 rpm |
| Insert / tool class | ISO P — CVD-coated carbide |
| Coolant | Emulsion (5-8%); dry is possible for interrupted cuts |
| Thermal growth, 100 mm part, +10 °C | 11.7 µm (CTE 11.7 µm/m·K) |
Starting values for 1018 Steel, Cold-drawn; optimised on the first article.
1018 Steel Data Relevant to CNC Milling
| Equivalent designations | UNS G10180 / C15 / S20C |
|---|---|
| Key composition | C 0.15-0.20%, Mn 0.6-0.9% |
| Typical supply condition | Cold-drawn |
| Hardness (typical) | ~71 HRB |
| Machinability rating | 78% (AISI B1112 = 100%) |
Typical values; we work to your drawing and mill certificate.
How 1018 Steel Differs
The most common low-carbon machining bar; good finish and carburisable.
Typical applications: Shafts, pins, spacers, fixtures.
1018 Steel vs Similar Grades
| 1018 Steel | 1010 Steel | 1020 Steel | 1008 Steel | |
|---|---|---|---|---|
| Key composition | C 0.15-0.20%, Mn 0.6-0.9% | C 0.08-0.13% | C 0.18-0.23% | C ≤0.10% |
| Hardness | ~71 HRB | ~55-65 HRB | ~68 HRB | ~50-60 HRB |
| Tensile (MPa) | ~440 | ~330-365 | ~420 | ~300-340 |
| Machinability % | 78 | 55 | 72 | 55 |
| Typical use | Shafts, pins, spacers, fixtures | Formed parts, rivets, cold-headed parts | Axles, bolts, general parts | Stampings, deep-drawn parts, panels |
More on CNC Milling Steel
Finishing options, quality documentation and general cnc milling guidance for all steel grades are on our CNC Milling Steel page.
No drawing yet? Sketch the part in our free 3D + 2D builder and send it with your RFQ.
Quoting CNC Milling 1018 Steel
Send a STEP/IGES model or PDF drawing, confirm 1018 Steel and its condition (we usually see it supplied cold-drawn), the quantity, critical tolerances and any finish or certificate requirements.
1018 Steel in Other Processes
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Send the drawing, the 1018 Steel condition and the quantity — pricing and lead time come back the same or next business day.
Request a QuoteFrequently Asked Questions
Why is 1018 Steel a good choice for CNC Milling?
1018 Steel is strong, economical and widely available, which makes it well suited to CNC Milling. We tune the process to the alloy so the finished 1018 Steel machining part meets your dimensional and functional requirements.
What is the typical lead time and minimum order for CNC Milling 1018 Steel?
CNC Milling prototypes for 1018 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 Milling 1018 Steel parts?
CNC Milling 1018 Steel parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise 1018 Steel components are required.
What material thickness or size range suits CNC Milling 1018 Steel?
We machine 1018 Steel across a broad size range; share your part envelope for confirmation.
How clean are the edges produced by CNC Milling on 1018 Steel?
Machined 1018 Steel edges are clean and to specification; edge-break or deburring is added when your drawing calls for it.
What surface finish is achievable on 1018 Steel with CNC Milling?
Surface finish on 1018 Steel is controlled to your specification; we confirm the achievable Ra against your callout.