VT machining offers CNC Milling for 1045 Steel (UNS G10450 / C45 / S45C), typically supplied normalised or cold-drawn. Medium carbon; can be induction- or flame-hardened.
CNC Milling Notes for 1045 Steel
1045 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 1045 Steel weighs about 0.79 kg.
Starting Parameters for CNC Milling 1045 Steel
| Cutting speed (carbide) | 140-240 m/min |
|---|---|
| Feed per tooth | 0.035-0.123 mm |
| Spindle speed, Ø10 mm end mill | 4460-7640 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 1045 Steel, Normalised or cold-drawn; optimised on the first article.
1045 Steel Data Relevant to CNC Milling
| Equivalent designations | UNS G10450 / C45 / S45C |
|---|---|
| Key composition | C 0.43-0.50% |
| Typical supply condition | Normalised or cold-drawn |
| Hardness (typical) | ~170-210 HB |
| Machinability rating | 57% (AISI B1112 = 100%) |
Typical values; we work to your drawing and mill certificate.
How 1045 Steel Differs
Medium carbon; can be induction- or flame-hardened.
Typical applications: Shafts, gears, axles, studs.
1045 Steel vs Similar Grades
| 1045 Steel | 1020 Steel | 1060 Steel | 1018 Steel | |
|---|---|---|---|---|
| Key composition | C 0.43-0.50% | C 0.18-0.23% | C 0.55-0.65% | C 0.15-0.20%, Mn 0.6-0.9% |
| Hardness | ~170-210 HB | ~68 HRB | ~180-230 HB | ~71 HRB |
| Tensile (MPa) | ~570-625 | ~420 | ~680 | ~440 |
| Machinability % | 57 | 72 | 51 | 78 |
| Typical use | Shafts, gears, axles, studs | Axles, bolts, general parts | Springs, blades, wear plates | Shafts, pins, spacers, fixtures |
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 1045 Steel
Send a STEP/IGES model or PDF drawing, confirm 1045 Steel and its condition (we usually see it supplied normalised or cold-drawn), the quantity, critical tolerances and any finish or certificate requirements.
1045 Steel in Other Processes
Related
Send the drawing, the 1045 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 1045 Steel parts to my drawing?
Yes. 1045 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.
Does CNC Milling 1045 Steel require dedicated tooling?
Most 1045 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 1045 Steel parts?
CNC Milling 1045 Steel parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise 1045 Steel components are required.
What is the typical lead time and minimum order for CNC Milling 1045 Steel?
CNC Milling prototypes for 1045 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.