VT machining offers CNC Tapping for Q235 Steel (GB/T 700 / ~S235JR / ~A36), typically supplied hot-rolled. Chinese standard structural steel, yield ≥235 MPa.
CNC Tapping Notes for Q235 Steel
Q235 Steel is ductile enough for form (roll) tapping, which gives stronger, chip-free threads; cut taps are used where the drawing or material condition requires.
For estimating, a 100 × 100 × 10 mm block of Q235 Steel weighs about 0.79 kg.
Starting Parameters for CNC Tapping Q235 Steel
| Cutting speed (carbide) | 15-25 m/min |
|---|---|
| Recommended tap | Form (roll) tap — chipless |
| Tap drill for M8×1.25 | Ø7.4 mm (form tap) |
| Spindle speed, M8 | 600-990 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.
Full material data for Q235 Steel (GB/T 700 / ~S235JR / ~A36) is on the CNC Milling Q235 Steel page.
More on CNC Tapping Steel
Finishing options, quality documentation and general cnc tapping guidance for all steel grades are on our CNC Tapping Steel page.
No drawing yet? Sketch the part in our free 3D + 2D builder and send it with your RFQ.
Quoting CNC Tapping 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 is CNC Tapping Q235 Steel and how is it done?
CNC Tapping Q235 Steel refers to rigid CNC tapping cuts internal threads in sync with spindle feed for precise, repeatable thread engagement. 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.
Can VT machining make custom Q235 Steel parts to my drawing?
Yes. Q235 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 Tapping Q235 Steel require dedicated tooling?
Most Q235 Steel machining work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.
What tolerances can you hold for CNC Tapping Q235 Steel?
Achievable tolerances for Q235 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.
What surface finish is achievable on Q235 Steel with CNC Tapping?
Surface finish on Q235 Steel is controlled to your specification; we confirm the achievable Ra against your callout.
Why is Q235 Steel a good choice for CNC Tapping?
Q235 Steel is strong, economical and widely available, which makes it well suited to CNC Tapping. We tune the process to the alloy so the finished Q235 Steel machining part meets your dimensional and functional requirements.