WorkshopMate

1Inputs

Operation

Workpiece material

Workpiece diameter

Depth of cut

ConditionAs supplied

Hardness150 HB

Tensile strength519 MPa

Machinability73% · Good

Coolant

Flood coolant or HP coolant for chip control

Chip control

Work hardens; use sharp geometry, positive cutting action, good coolant.

Machining notes

General starting point; confirm actual certificate/hardness.

Needs validation against supplier/toolmaker data

2Tool & insert

OD turning

DCMT 11T304

General-purpose positive turning tool for finishing and light roughing.

Recommended

55° diamond

HolderSDJCR 2020K11

InsertDCMT 11T304

GradeISO M25

Tool materialCarbide

CoatingCVD coated

Nose radius0.4 mm

Lead angle93°

Maximum DOC2.5 mm

Recommended setupKeep below 1.5 × holder height

Suitable for profiling and shoulder turning.
Use a larger nose radius for heavier roughing.
Reduce overhang where chatter is present.

3Results

Spindle speed955RPM

Feed rate191mm/min

Cutting speed150m/min

Feed0.20mm/rev

Material removal45.0cmÂ³/min

4Recommendations

Cutting conditions

OD turning on 316 at 150 m/min and 0.20 mm/rev.

Operation: OD turning
Material: 316
Cutting speed: 150 m/min
Feed: 0.20 mm/rev
Depth of cut: 1.5 mm

Tool setup

External turning setup showing feed direction, cutting edge on spindle centreline, coolant direction and minimum holder overhang

Recommended setup

Rigid and correctly aligned

Keep the tool and workholding rigid.
Minimise holder overhang.
Verify the cutting edge is on centre height.
Confirm the insert is seated and clamped correctly.
Direct coolant at the cutting edge.

Setup statusRecommended

G-code example

G96 S150 M03
G95
G00 X52.0 Z2.0
G01 X50.0 F0.20

Troubleshooting

Chatter

Reduce overhang, check rigidity and lower cutting speed if required.

Poor surface finish

Check insert wear, nose radius, feed and coolant delivery.

Built-up edge

Increase cutting speed cautiously and confirm the insert grade suits the material.