Martensitic Steel Alloy A-100 High Strength Excellent Mechanical
Performance
A-100 (AerMet 100) is an ultra-high strength type of martensitic
steel alloy, It has a very hard form of steel crystalline
structurewas and developed in response to a need for a stronger and
tougher material with superior fracture toughness and ductility.
The minimum tensile strength of the alloy is 280 ksi (1930 MPa).
Due to the alloy is not a corrosion-resistant alloy, the sealing
must be performed if used in a wet environment. Excellent hardness,
tensile strength, and ductility make the alloy a candidate for
various applications, including landing gear, armor, fasteners,
actuators, ordnance, jet aircraft, engine shafts, drive axles, and
structural tubes. AerMet 100 high-strength steel can be used in
operating condition up to 427 °C (800 °F).
Parameters
- Density: 7.9g/cm3(0.285lb/in3)
- Elastic modulus: 28.2 * 103KSI
- Resresistivity: 259.0 ohm-cir-mil / ft (70.0 ° F)
Advantages
- High hardness and strength
- Excellent mechanical performance
- Safety belts and strength
- Excellent ductility and toughness
- High fracture toughness
- Excellent fatigue and stress corrosion cracking resistance
- High fatigue strength
Decarburization
Like other carbon bearing high strength alloys, AerMet 100 alloy is
subject to decarburization during hardening. Heat treatment should
take place in a neutral atmosphere furnace, salt bath or vacuum.
Decarburization should be determined by comparing the surface and
internal hardness of a small test cube for proper response.
Metallographic determination of decarburization is not recommended
for this alloy.
Normalizing
AerMet 100 alloy can be normalized by heating to 1650° F (899° C)
holding for one hour and air cooling to room temperature. Optimum
softening for machining is obtained by following the 1650° F (899°
C) normalize with a 16 hour 1250° F (677° C) overage anneal.
Annealing
AerMet 100 alloy is softened by using a 1250° F (677° C) overage
anneal for 16 hours. The optimum annealed hardness of 40 HRC
maximum is obtained following this anneal.
Solution Treatment
The solution treatment temperature range is 1625° F+/-25° F (885° C
+/-14° C) for 1 hour. The solution treatment temperature must be
monitored by a thermocouple attached to the load.
Specifications
AMS 6532,UNS K92580, GJB 9450-2018
Available forms
Forgings, rods, square rods, plate, strip, wire, welding wire,
etc., with a diameter range of 20-400mm
