General Information for Stainless Steel Aermet 100
| Material Group |
M - Stainless Steel |
| Sub-Group |
Martensitic Stainless Steel |
| Hardness |
40.0 HRC |
| Tensile Strength |
1250 [N/mm^2] |
| Machinability Range |
32% |
MACHINABILITY OF AERMET 100 STAINLESS STEEL
Aermet 100 (registered trademark of CRS holdings, a subsidiary of carpenter) is an ultra-high-strength martensitic alloy containing 12% nickel and 14% cobalt. It is not corrosion-resistant, and therefore it must be surface treated to avoid rust. Aermet 100 is mainly used for aerospace components such as landing gear, fasteners, actuators, and jet engine shafts. It is supplied at 38-40 HRC in its annealed condition, and therefore it is very challenging to machine with a poor machinability rating of 32%.
SUMMARY:
Due to its hardness and low cutting speed, it is best to machine it with a carbide grade that has a very 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 390 - 520 [SFM] / 120 - 160 [m/min].
Recommended cutting speed range for milling with stable clamping and short overhang is 250 - 330 [SFM] / 75 - 100 [m/min]
For detailed cutting speed recommendations, check the table below.
Equivalent International Designations for Stainless Steel Aermet 100
| Standard |
Name |
| SAE |
AMS 6532 |
| UNS |
UNSK92580 |
Chemical Composition for Stainless Steel Aermet 100
| Element |
Amount |
| Iron (Fe) |
71% |
| Cobalt (Co) |
13.4% |
| Nickel (Ni) |
11.1% |
| Chromium (Cr) |
3% |
| Copper (Cu) |
0.23% |
| Molybdenum (Mo) |
1.2% |
Cutting Speeds Recomendations for Stainless Steel Aermet 100
| Application |
Vc (m/min) |
Vc (SFM) |
| Turning |
120-160 |
390-520 |
| Milling |
75-100 |
250-330 |
| Parting |
50-65 |
160-210 |
| Grooving |
70-95 |
230-310 |
| Drilling |
35-45 |
110-150 |
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 Stainless Steel Aermet 100
Grade for Milling (Indexable)
Recommended Insert Cutting Edge Geometry for Stainless Steel Aermet 100
| Honing Size |
0.03-0.05 mm / 0.001-0.002" |
| Rake Angle |
9°-11° |
| Land Angle |
Positive |
| Land Width |
0.20-0.30 mm / 0.008-0.012" |
