VT machining offers CNC Turning for S275JR Steel (EN 10025 / 1.0044 / ~A36), typically supplied hot-rolled. Mid-strength European structural steel, yield ≥275 MPa.
CNC Turning Notes for S275JR Steel
S275JR Steel turns with good chip control at standard cutting data.
For estimating, a 100 × 100 × 10 mm block of S275JR Steel weighs about 0.79 kg.
Starting Parameters for CNC Turning S275JR 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 S275JR Steel, Hot-rolled; optimised on the first article.
S275JR Steel Data Relevant to CNC Turning
| Equivalent designations | EN 10025 / 1.0044 / ~A36 |
|---|---|
| Key composition | C ≤0.21%, Mn ≤1.5% |
| Typical supply condition | Hot-rolled |
| Hardness (typical) | ~130 HB |
| Machinability rating | 70% (AISI B1112 = 100%) |
Typical values; we work to your drawing and mill certificate.
How S275JR Steel Differs
Mid-strength European structural steel, yield ≥275 MPa.
Typical applications: Structural sections, base plates.
S275JR Steel vs Similar Grades
| S275JR Steel | S235JR Steel | S355JR Steel | 12L14 Steel | |
|---|---|---|---|---|
| Key composition | C ≤0.21%, Mn ≤1.5% | C ≤0.17-0.20%, Mn ≤1.4% | C ≤0.24%, Mn ≤1.6% | C ≤0.15%, S 0.26-0.35%, Pb 0.15-0.35% |
| Hardness | ~130 HB | ~120 HB | ~150 HB | ~80 HRB |
| Tensile (MPa) | 410-560 | 360-510 | 470-630 | ~540 |
| Machinability % | 70 | 70 | 65 | 160 |
| Typical use | Structural sections, base plates | Frames, brackets, weldments | Machine frames, heavy brackets, cranes | High-volume turned parts, hydraulic fittings |
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 S275JR Steel
Send a STEP/IGES model or PDF drawing, confirm S275JR Steel and its condition (we usually see it supplied hot-rolled), the quantity, critical tolerances and any finish or certificate requirements.
S275JR Steel in Other Processes
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Send the drawing, the S275JR 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 S275JR Steel parts to my drawing?
Yes. S275JR 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 S275JR Steel require dedicated tooling?
Most S275JR Steel turning work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.
Which industries use CNC Turning S275JR Steel parts?
CNC Turning S275JR Steel parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise S275JR Steel components are required.
What material thickness or size range suits CNC Turning S275JR Steel?
Turned S275JR Steel parts are produced from bar or chuck stock across a wide diameter range.
What is the typical lead time and minimum order for CNC Turning S275JR Steel?
CNC Turning prototypes for S275JR 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.