General Information for Steel 1144
| Material Group |
P-Steel |
| Sub-Grou |
Free-Cutting Steel |
| Tensile Strengt |
[N/mm^2] |
| Machinability |
76% |
Equivalent International Designations for Steel 1144
| Standard |
Name |
| SAE |
1144 |
| WNR |
1.0726 |
| DIN |
44SMn28 |
Chemical Composition for Steel 1144
| Element |
Amount |
| Manganese (Mn) |
1.35-1.65% |
| Carbon (C) |
.40-.48% |
| Sulfur(S) |
.24-.33% |
| Phosphorus(P) |
0.03% |
Cutting Speeds Recomendations for Steel 1144
| Application |
Vc (m/min) |
Vc (SFM) |
| Turning |
285-385 |
930-1260 |
| Milling |
175-240 |
570-790 |
| Parting |
135-185 |
440-610 |
| Grooving |
160-215 |
520-710 |
| Drilling |
115-155 |
380-510 |
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 1144
Grade for Milling (Indexable)
Recommended Insert Cutting Edge Geometry for Steel 1144
| 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" |
