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" |