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" |