VT machining offers CNC Turning for SGCC Steel (JIS G3302 hot-dip galvanised), typically supplied cold-rolled, HDG coated. Thicker hot-dip zinc than SECC for outdoor corrosion protection.
CNC Turning Notes for SGCC Steel
SGCC Steel turns with good chip control at standard cutting data.
For estimating, a 100 × 100 × 10 mm block of SGCC Steel weighs about 0.79 kg.
Starting Parameters for CNC Turning SGCC Steel
| Cutting speed (carbide) | 155-275 m/min |
|---|---|
| Feed | 0.1-0.35 mm/rev |
| Spindle speed, Ø25 mm bar | 1970-3500 rpm |
| Insert / tool class | ISO P — CVD-coated carbide |
| Coolant | Emulsion (5-8%); dry is possible for interrupted cuts |
Starting values for SGCC Steel, Cold-rolled, HDG coated; optimised on the first article.
SGCC Steel Data Relevant to CNC Turning
| Equivalent designations | JIS G3302 hot-dip galvanised |
|---|---|
| Key composition | Low-carbon base + hot-dip zinc |
| Typical supply condition | Cold-rolled, HDG coated |
| Hardness (typical) | ~50-65 HRB |
| Machinability rating | 55% (AISI B1112 = 100%) |
Typical values; we work to your drawing and mill certificate.
How SGCC Steel Differs
Thicker hot-dip zinc than SECC for outdoor corrosion protection.
Typical applications: Outdoor cabinets, HVAC, roofing parts.
SGCC Steel vs Similar Grades
| SGCC Steel | SECC Steel | SPCC Steel | Q345 Steel | |
|---|---|---|---|---|
| Key composition | Low-carbon base + hot-dip zinc | SPCC base + electro-zinc | C ≤0.15% | 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 | Outdoor cabinets, HVAC, roofing parts | Computer chassis, electrical cabinets | Sheet-metal enclosures, brackets, panels | Bridges, machine bases, pressure parts |
More on CNC Turning Steel
Finishing options, quality documentation and general cnc turning guidance for all steel grades are on our CNC Turning Steel page.
No drawing yet? Sketch the part in our free 3D + 2D builder and send it with your RFQ.
Quoting CNC Turning SGCC Steel
Send a STEP/IGES model or PDF drawing, confirm SGCC Steel and its condition (we usually see it supplied cold-rolled, HDG coated), the quantity, critical tolerances and any finish or certificate requirements.
SGCC Steel in Other Processes
Related
Send the drawing, the SGCC Steel condition and the quantity — pricing and lead time come back the same or next business day.
Request a QuoteFrequently Asked Questions
What tolerances can you hold for CNC Turning SGCC Steel?
Achievable tolerances for SGCC Steel turning depend on the alloy, geometry and feature size. Turning holds diameter tolerances to around ±0.005 mm with concentricity within 0.01 mm. Exact figures are confirmed against your drawing callouts.
Which industries use CNC Turning SGCC Steel parts?
CNC Turning SGCC Steel parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise SGCC Steel components are required.
Why is SGCC Steel a good choice for CNC Turning?
SGCC Steel is strong, economical and widely available, which makes it well suited to CNC Turning. We tune the process to the alloy so the finished SGCC Steel turning part meets your dimensional and functional requirements.
Can VT machining make custom SGCC Steel parts to my drawing?
Yes. SGCC Steel turning 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 Turning SGCC Steel require dedicated tooling?
Most SGCC Steel turning work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.
What material thickness or size range suits CNC Turning SGCC Steel?
Turned SGCC Steel parts are produced from bar or chuck stock across a wide diameter range.