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 ideal alloy many critical applications. 

Common stock sizes: 1” to 5.000” diameters.

Common Specifications:

  • AMS 6532
  • Donnell 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%
Rockwell-Industries-Aermet-100-image

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