General Information for Steel 9840
Material Group |
P - Steel |
Sub-Grou |
Low Carbon Steel |
Tensile Strengt |
800-1100[N/mm^2] |
Machinability |
70%-84% |
Equivalent International Designations for Steel 9840
Standard |
Name |
SAE |
9840 |
WNR |
1.6511 |
DIN |
36CrNiMo4 |
BS |
816M40 |
ANFOR |
40NCD3 |
UNI |
38NiCrMo4(KB) |
UNF |
35NiCrMo4 |
Chemical Composition for Steel 9840
Sorry, Not Availble for this Material
Cutting Speeds Recomendations for Low Alloyed Steel (Alloying elements less then 8%)
Application |
Vc (m/min) |
Vc (SFM) |
Turning |
305-370 |
1000-1210 |
Milling |
190-230 |
620-750 |
Parting |
145-175 |
480-570 |
Grooving |
170-205 |
560-670 |
Drilling |
125-145 |
410-480 |
Important! The speed estimation is given for an ideal situation:
- Most suitable carbide grade
- Stable tool clamping
- Stableworkpiece clamping
- Goodqualityraw material
- Ashort overhangof the cutting tool.
- Nominalhardnessof the material.
- etc.
Recommended Carbide Grades for Steel 9840
Grade for Milling (Indexable)
Recommended Insert Cutting Edge Geometry for Steel 9840
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" |