VT machining offers CNC Milling for SECC Steel (JIS G3313 electro-galvanised SPCC), typically supplied cold-rolled, EG coated. Thin, smooth zinc coating for painted or bare electronics enclosures.
CNC Milling Notes for SECC Steel
SECC 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 SECC Steel weighs about 0.79 kg.
Starting Parameters for CNC Milling SECC Steel
| Cutting speed (carbide) | 135-235 m/min |
|---|---|
| Feed per tooth | 0.035-0.123 mm |
| Spindle speed, Ø10 mm end mill | 4300-7480 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 SECC Steel, Cold-rolled, EG coated; optimised on the first article.
SECC Steel Data Relevant to CNC Milling
| Equivalent designations | JIS G3313 electro-galvanised SPCC |
|---|---|
| Key composition | SPCC base + electro-zinc |
| Typical supply condition | Cold-rolled, EG coated |
| Hardness (typical) | ~50-65 HRB |
| Machinability rating | 55% (AISI B1112 = 100%) |
Typical values; we work to your drawing and mill certificate.
How SECC Steel Differs
Thin, smooth zinc coating for painted or bare electronics enclosures.
Typical applications: Computer chassis, electrical cabinets.
SECC Steel vs Similar Grades
| SECC Steel | SPCC Steel | SGCC Steel | Q345 Steel | |
|---|---|---|---|---|
| Key composition | SPCC base + electro-zinc | C ≤0.15% | Low-carbon base + hot-dip zinc | C ≤0.20%, Mn ≤1.7% |
| Hardness | ~50-65 HRB | ~50-65 HRB | ~50-65 HRB | ~150 HB |
| Tensile (MPa) | ≥270 | ≥270 | ≥270 | 470-630 |
| Machinability % | 55 | 55 | 55 | 65 |
| Typical use | Computer chassis, electrical cabinets | Sheet-metal enclosures, brackets, panels | Outdoor cabinets, HVAC, roofing parts | Bridges, machine bases, pressure 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 SECC Steel
Send a STEP/IGES model or PDF drawing, confirm SECC Steel and its condition (we usually see it supplied cold-rolled, EG coated), the quantity, critical tolerances and any finish or certificate requirements.
SECC Steel in Other Processes
Related
Send the drawing, the SECC Steel condition and the quantity — pricing and lead time come back the same or next business day.
Request a QuoteFrequently Asked Questions
Which industries use CNC Milling SECC Steel parts?
CNC Milling SECC Steel parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise SECC Steel components are required.
Does CNC Milling SECC Steel require dedicated tooling?
Most SECC Steel machining work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.
Why is SECC Steel a good choice for CNC Milling?
SECC 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 SECC Steel machining part meets your dimensional and functional requirements.
What is CNC Milling SECC Steel and how is it done?
CNC Milling SECC Steel refers to multi-axis milling cutters remove material to produce prismatic features, pockets, slots and contoured 3D surfaces. Applied to SECC Steel — strong, economical and widely available — VT machining produces each part to your CAD drawing, selecting parameters from your tolerance, finish and quantity requirements.
What material thickness or size range suits CNC Milling SECC Steel?
We machine SECC Steel across a broad size range; share your part envelope for confirmation.