General Information for Steel 8630
| Material Group |
P-Steel |
| Sub-Grou |
Low Alloy Steel |
| Tensile Strengt |
690-930[N/mm^2] |
| Machinability |
59% |
MACHINABILITY OF 8630 STEEL
Steel 8630 is a low-alloy steel with a carbon content of 0.3% and additional 2.1% content of manganese, chromium, nickel, and molybdenum. (See details in the table below). Steel 8630 has a machinability rating of 59%.
Low alloy steels are very popular in machine shops. The small amount of alloying elements enhances their mechanical properties and hardenability without a significant sacrifice in terms of machinability.
SUMMARY:
For general turning of Steel 8630 at stable conditions use a grade with a hard substrate and CVD coating.
In case you are running at a cutting speed that is lower than 490 SFM (150 m/min), it is better to use a grade with a hard substrate and PVD coating.
For general milling,use a grade with a Semi-hard substrate and thin PVD coating.
For detailed carbide grades recommendations,check the table below.
Recommended Cutting speed range for turning at stable conditions is 720 - 980 [SFM] / 220 - 300 [m/min].
Recommended Cutting speed range for milling with stable clamping and short over hang is 440 - 610 [SFM] / 135 - 185 [m/min]
For detailed cutting speed recommendations,check the table below.
Equivalent International Designations for Steel 8630
| Standard |
Name |
| SAE |
8630 |
| WNR |
1.6545 |
| DIN |
27CrNiMo2 |
Chemical Composition for Steel 8630
| Element |
Amount |
| Manganese(Mn) |
.70-.90% |
| Nickel(Ni) |
.40-.70% |
| Chromium(Cr) |
.40-.60% |
| Carbon(C) |
.28-.33% |
| Molybdenum(Mo) |
.15-.25% |
Cutting Speeds Recomendations for Low Alloyed Steel (Alloying elements less then 8%)
| Application |
VC(m/min) |
Vc(SFM) |
| Turning |
220-300 |
720-980 |
| Milling |
135-185 |
440-610 |
| Parting |
105-145 |
340-480 |
| Grooving |
125-165 |
410-540 |
| Drilling |
90-120 |
300-390 |
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 8630
Grade for Milling (Indexable)
Recommended Insert Cutting Edge Geometry for Steel 8630
| 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" |
