VT machining offers CNC Milling for 1020 Steel (UNS G10200 / C22 / S20C), typically supplied hot-rolled or cold-drawn. Close to 1018 with slightly lower Mn; general machined parts.
CNC Milling Notes for 1020 Steel
1020 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 1020 Steel weighs about 0.79 kg.
Starting Parameters for CNC Milling 1020 Steel
| Cutting speed (carbide) | 175-305 m/min |
|---|---|
| Feed per tooth | 0.035-0.123 mm |
| Spindle speed, Ø10 mm end mill | 5570-9710 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 1020 Steel, Hot-rolled or cold-drawn; optimised on the first article.
1020 Steel Data Relevant to CNC Milling
| Equivalent designations | UNS G10200 / C22 / S20C |
|---|---|
| Key composition | C 0.18-0.23% |
| Typical supply condition | Hot-rolled or cold-drawn |
| Hardness (typical) | ~68 HRB |
| Machinability rating | 72% (AISI B1112 = 100%) |
Typical values; we work to your drawing and mill certificate.
How 1020 Steel Differs
Close to 1018 with slightly lower Mn; general machined parts.
Typical applications: Axles, bolts, general parts.
1020 Steel vs Similar Grades
| 1020 Steel | 1018 Steel | 1045 Steel | 1010 Steel | |
|---|---|---|---|---|
| Key composition | C 0.18-0.23% | C 0.15-0.20%, Mn 0.6-0.9% | C 0.43-0.50% | C 0.08-0.13% |
| Hardness | ~68 HRB | ~71 HRB | ~170-210 HB | ~55-65 HRB |
| Tensile (MPa) | ~420 | ~440 | ~570-625 | ~330-365 |
| Machinability % | 72 | 78 | 57 | 55 |
| Typical use | Axles, bolts, general parts | Shafts, pins, spacers, fixtures | Shafts, gears, axles, studs | Formed parts, rivets, cold-headed parts |
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 1020 Steel
Send a STEP/IGES model or PDF drawing, confirm 1020 Steel and its condition (we usually see it supplied hot-rolled or cold-drawn), the quantity, critical tolerances and any finish or certificate requirements.
1020 Steel in Other Processes
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Send the drawing, the 1020 Steel condition and the quantity — pricing and lead time come back the same or next business day.
Request a QuoteFrequently Asked Questions
Can VT machining make custom 1020 Steel parts to my drawing?
Yes. 1020 Steel machining 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 Milling 1020 Steel?
Achievable tolerances for 1020 Steel machining depend on the alloy, geometry and feature size. Milling holds positional and dimensional tolerances to around ±0.01 mm, tighter with precision setups. Exact figures are confirmed against your drawing callouts.
Does CNC Milling 1020 Steel require dedicated tooling?
Most 1020 Steel machining work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.
Which industries use CNC Milling 1020 Steel parts?
CNC Milling 1020 Steel parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise 1020 Steel components are required.
What is the typical lead time and minimum order for CNC Milling 1020 Steel?
CNC Milling prototypes for 1020 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 Milling 1020 Steel and how is it done?
CNC Milling 1020 Steel refers to multi-axis milling cutters remove material to produce prismatic features, pockets, slots and contoured 3D surfaces. Applied to 1020 Steel — strong, economical and widely available — VT machining produces each part to your CAD drawing, selecting parameters from your tolerance, finish and quantity requirements.