General Information for Steel H10
| Material Group |
P - Steel |
| Sub-Group |
Tool Steel |
| Tensile Strength |
770[N/mm^2] |
| Machinability Range |
55% |
MACHINABILITY OF H10 STEEL
Steel H10 is a tool steel (high-alloy steel) that has on top of the 0.4% of carbon an additional 7.2% of manganese, chromium, nickel, and molybdenum. (See details in the table below). Steel H10 has a machinability rating of 55%.
Steel H10 belongs to the "H series" of tool steels. They are classified as chromium hot-work steels and contain medium carbon content (around 0.4%) and chromium content of around 5%. Tool steels in this series (H10-H19) have a machinability rating of 50-60%. They are the easiest to machine group of tool steels and are used when higher strength and/or hardenability are required that cannot be achieved with low alloy steel.
SUMMARY:
For turning operations on steel H10, it is best to use inserts with thick CVD coating and medium hardness. For milling, any all-around carbide grade is suitable.
For detailed carbide grades recommendations,check the table below.
Recommended cutting speed range for turning at stable conditions is 670 - 900 [SFM] / 205 - 275 [m/min].
Recommended cutting speed range for milling with stable clamping and short over hang is 410 - 560 [SFM] / 125 - 170 [m/min]
For detailed cutting speed recommendations, check the table below.
Equivalent International Designations for Steel H10
| Standard |
Name |
| SAE |
H10 |
| WNR |
1.2365 |
| DIN |
X32CrMoV33 |
| BS |
BH10 |
| ANFOR |
30CDV12-28 |
| UNI |
30CrMoV1227KU |
| UNF |
F.5313 |
Chemical Composition for Steel H10
| Element |
Amount |
| Chromium (Cr) |
3.00-3.75% |
| Molybdenum (Mo) |
2.00-3.00% |
| Silicon (Si) |
0.80-1.20% |
| Vanadium (V) |
0.25-0.75% |
| Manganese (Mn) |
0.25-0.70% |
| Carbon (C) |
0.35-0.45% |
| Nickel (Ni) |
0.30 max% |
Cutting Speeds Recomendations for Steel H10
| Application |
Vc (m/min) |
Vc (SFM) |
| Turning |
205-275 |
670-900 |
| Milling |
125-170 |
410-560 |
| Parting |
100-135 |
330-440 |
| Grooving |
115-155 |
380-510 |
| Drilling |
80-110 |
260-360 |
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 H10
Grade for Milling (Indexable)
Recommended Insert Cutting Edge Geometry for Steel H10
| Honing Size |
0.05-0.08 mm / 0.002-0.003" |
| Rake Angle |
11° -13° |
| Land Angle |
Positive |
| Land Width |
0.20-0.30 mm / 0.008-0.012" |
