Printed from Kezuriba (kezuriba.net/en/troubles/material-mild-steel/)

Mild steel (low-carbon steel) quirks

Material-specific problems TurningMilling

Check first

Chips tend to stretch, and the material is soft, so it welds easily to the cutting edge
The finished surface tends to become fuzzy

Try first

Increase the cutting speed
Use a welding-resistant grade (cermet, etc.)
Use non-water-soluble oil or wet cutting

?Likely causes

Chips tend to stretch, and the material is soft, so it welds easily to the cutting edgeAgreed by 2+ makers^[1][2]
The finished surface tends to become fuzzyAgreed by 2+ makers^[3][4]

✓Fixes

Cutting conditions

Increase the cutting speedAgreed by 2+ makers^[4][3][5]

Tool

Choose tools that prioritize chip control and welding resistanceOne maker^[1]
Use a welding-resistant grade (cermet, etc.)Agreed by 2+ makers^[4][3][5]

Coolant

Use non-water-soluble oil or wet cuttingAgreed by 2+ makers^[4][3][5]

↔Related problems

Stainless steel quirks (work hardening, welding, boundary wear)Aluminum alloy quirks (welding, built-up edge, chips)Titanium and titanium alloy quirks (heat, welding, ignition)Cast iron quirks (powdery chips, edge chipping, black scale)Hardened steel (high-hardness steel) quirks Heat-resistant alloy (Ni-base alloy, etc.) quirks Magnesium alloy quirks (chip ignition)Copper and copper alloy quirks

📚Sources

Causes and fixes are summarized in our own words from cutting-tool makers’ troubleshooting guides and technical data. “Agreed by 2+ makers” means two or more makers say the same thing.

Mitsubishi Materials — Workpiece material applications: P series mmc-carbide.com
Sandvik Coromant — Milling troubleshooting sandvik.coromant.com
Tungaloy tungaloy.com
Mitsubishi Materials — Turning troubleshooting mmc-carbide.com
Mitsubishi Materials — Advanced Turning: Troubleshooting mmc-carbide.com