General Information for Steel 1140
| Material Group |
P-Steel |
| Sub-Grou |
Free-Cutting Steel |
| Tensile Strengt |
510-740[N/mm^2] |
| Machinability |
70% |
Equivalent International Designations for Steel 1140
| Standard |
Name |
| SAE |
1140 |
| WNR |
1.0726 |
| DIN |
35S20 |
| BS |
212M36 |
| SS |
1957 |
| ANFOR |
35MF4 |
| UNF |
F210G |
Chemical Composition for Steel 1140
| Element |
Amount |
| Manganese (Mn) |
0.7-1.00% |
| Carbon (C) |
.37-.44% |
| Sulfur(S) |
.08-.13% |
| Phosphorus(P) |
0.03% |
Cutting Speeds Recomendations for Steel 1140
| Application |
Vc (m/min) |
Vc (SFM) |
| Turning |
260-355 |
850-1160 |
| Milling |
160-220 |
520-720 |
| Parting |
125-170 |
410-560 |
| Grooving |
145-200 |
480-660 |
| Drilling |
105-140 |
340-460 |
Important! The speed estimation is given for an ideal situation:
- Most suitable carbide grade
- Stable tool clamping
- Stable workpiece clamping
- Good quality raw material
- A short overhang of the cutting tool.
- Nominal hardness of the material.
- etc.
Recommended Carbide Grades for Steel 1140
Grade for Milling (Indexable)
Recommended Insert Cutting Edge Geometry for Steel 1140
| Honing Siz |
0.05-0.08 mm / 0.002-0.003" |
| Rake Angl |
11° -13° |
| Land Angl |
Positive |
| Land Widt |
0.20-0.30 mm / 0.008-0.012" |
