VT machining offers CNC Turning for Q235 Steel (GB/T 700 / ~S235JR / ~A36), typically supplied hot-rolled. Chinese standard structural steel, yield ≥235 MPa.
CNC Turning Notes for Q235 Steel
Q235 Steel turns with good chip control at standard cutting data.
For estimating, a 100 × 100 × 10 mm block of Q235 Steel weighs about 0.79 kg.
Starting Parameters for CNC Turning Q235 Steel
| Cutting speed (carbide) | 200-350 m/min |
|---|---|
| Feed | 0.1-0.35 mm/rev |
| Spindle speed, Ø25 mm bar | 2550-4460 rpm |
| Insert / tool class | ISO P — CVD-coated carbide |
| Coolant | Emulsion (5-8%); dry is possible for interrupted cuts |
Starting values for Q235 Steel, Hot-rolled; optimised on the first article.
Q235 Steel Data Relevant to CNC Turning
| Equivalent designations | GB/T 700 / ~S235JR / ~A36 |
|---|---|
| Key composition | C ≤0.22%, Mn ≤1.4% |
| Typical supply condition | Hot-rolled |
| Hardness (typical) | ~120 HB |
| Machinability rating | 70% (AISI B1112 = 100%) |
Typical values; we work to your drawing and mill certificate.
How Q235 Steel Differs
Chinese standard structural steel, yield ≥235 MPa.
Typical applications: Frames, plates, general fabrications.
Q235 Steel vs Similar Grades
| Q235 Steel | S355JR Steel | Q345 Steel | S275JR Steel | |
|---|---|---|---|---|
| Key composition | C ≤0.22%, Mn ≤1.4% | C ≤0.24%, Mn ≤1.6% | C ≤0.20%, Mn ≤1.7% | C ≤0.21%, Mn ≤1.5% |
| Hardness | ~120 HB | ~150 HB | ~150 HB | ~130 HB |
| Tensile (MPa) | 370-500 | 470-630 | 470-630 | 410-560 |
| Machinability % | 70 | 65 | 65 | 70 |
| Typical use | Frames, plates, general fabrications | Machine frames, heavy brackets, cranes | Bridges, machine bases, pressure parts | Structural sections, base plates |
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 Q235 Steel
Send a STEP/IGES model or PDF drawing, confirm Q235 Steel and its condition (we usually see it supplied hot-rolled), the quantity, critical tolerances and any finish or certificate requirements.
Q235 Steel in Other Processes
Related
Send the drawing, the Q235 Steel condition and the quantity — pricing and lead time come back the same or next business day.
Request a QuoteFrequently Asked Questions
What material thickness or size range suits CNC Turning Q235 Steel?
Turned Q235 Steel parts are produced from bar or chuck stock across a wide diameter range.
What tolerances can you hold for CNC Turning Q235 Steel?
Achievable tolerances for Q235 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.
Can VT machining make custom Q235 Steel parts to my drawing?
Yes. Q235 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.
What is CNC Turning Q235 Steel and how is it done?
CNC Turning Q235 Steel refers to cNC turning rotates the workpiece against a single-point tool to produce cylindrical features, threads and grooves. Applied to Q235 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 is the typical lead time and minimum order for CNC Turning Q235 Steel?
CNC Turning prototypes for Q235 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.