AMS 5891 Haynes 230 Bar
AMS 5891 governs the production of Haynes 230 bars, ensuring they meet aerospace demands for high-temperature performance, durability, and consistency. This specification is vital for components requiring resistance to thermal degradation and mechanical stress in advanced engineering applications.
AMS 5891 Haynes 230 Bar is a nickel-chromium-tungsten-molybdenum alloy that combines excellent high temperature strength, outstanding resistance to nitriding environments and excellent long term thermal stability. Alloy 230 is easily fabricated and has very good forming and welding characteristics.
AMS 5891 Haynes 230 Bar is solution treated at 2150 to 2275°F followed by rapid cooling, and is supplied in this condition (as per AMS 5891 and AMS 5878). Alloy 230 can be both hot worked and cold worked, and all parts should be annealed and rapidly cooled in order to restore the best balance of properties.
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Chemical Composition
|
Element |
Content (%) |
|
Nickel, Ni |
56.16-65.7 |
|
Chromium, Cr |
20-24 |
|
Tungsten, W |
13-15 |
|
Molybdenum, Mo |
1-3 |
|
Manganese, Mn |
1 |
|
Silicon, Si |
0.25-0.75 |
|
Carbon, C |
0.050-0.090 |
Mechanical Properties
|
Material |
Test Temp °F |
Ultimate Tensile Strength |
0.2 % Yield Strength |
Elongation in % |
Hardness HB |
|
Haynes Alloy 230 Extruded Bar |
RT |
758 Mpa |
310 Mpa |
35 |
241 max |
Applications
Aerospace: Combustors, turbine blades, exhaust systems, and structural parts in jet engines.
Industrial: Gas turbines, heat treatment fixtures, and high-temperature industrial components.
Processing Considerations
Machining: Challenging due to work-hardening; requires specialized tools and techniques.
Welding: Possible via TIG methods; may need post-weld heat treatment per AMS guidelines.
Importance in Aerospace
Ensures reliability in extreme environments, with rigorous quality controls for safety-critical applications.
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