AERMET® 100 AMS 6532
AerMet® 100 is an iron, cobalt and nickel enriched martensitic steel featuring ultra-high strength, exceptional hardness, and ductility properties. It is very well suited for applications which require both load-bearing capability and ballistic tolerance. With a superior stress corrosion cracking and fracture resistance, AerMet® 100 is an ideal alloy for many critical applications.
Stock sizes: 0.750” to 5.000” diameter
Common Specifications:
- AMS 6532
- McDonnell Douglas MMS 21
Common Applications:
- Jet engine shafts
- Landing gear
- Armor
- Fasteners
- Drive shafts
Bars normalized and overaged shall not have a hardness higher than 372 HB
Common Melting Practice:
VIM-VAR
The response to heat treatment tensile requirements are:
Minimum Longitudinal Tensile Properties:
| Property | Value Aged at 900 °F | Value Aged at 875 °F |
|---|---|---|
| Tensile Strength | 280 ksi (1931 MPa) | 290 ksi (1999 MPa) |
| Yield Strength at 0.2% Offset | 235 ksi (1620 MPa) | 245 ksi (1689 MPa) |
| Elongation in 4D | 10% | 10% |
| Reduction of Area | 55% | 50% |
Composition
| Element | Min. | Max. |
|---|---|---|
| Carbon | 0.21 | 0.25 |
| Manganese | — | 0.10 |
| Silicon | — | 0.10 |
| Phosphorus | — | 0.008 |
| Sulfur | — | 0.005 |
| Phosphorus + Sulfur | — | 0.010 |
| Chromium | 2.90 | 3.30 |
| Nickel | 11.00 | 12.00 |
| Cobalt | 13.00 | 14.00 |
| Molybdenum | 1.10 | 1.30 |
| Titanium | — | 0.015 |
| Aluminum | — | 0.015 |
Macrostructure Limits:
| Class | Condition | Severity |
|---|---|---|
| 1 | Freckles | A |
| 2 | White Spots | A |
| 3 | Radial Segregation | B |
| 4 | Ring Pattern | B |