Custom 465 View AMS Numbers >
Custom Alloy 465 (AMS 5936)
Custom 465 is a martensitic, premium-melted stainless steel alloy with a high concentration of nickel and chromium. It is known to have improved tensile strength and fracture toughness, which makes it an excellent choice for aerospace components that require these properties.
Alloy 465 is age-hardenable and has improved fabricability when compared to other alloys in this category. On top of that, it has excellent resistance to stress corrosion cracking. If needed, it can achieve exceptional strength, toughness and stress corrosion cracking by aging it at a higher temperature for longer, or to the H1000 condition (more on that in the Heat Treatment section).
Thanks to that, apart from its widespread use in the aerospace industry, it also finds use in the medical industry, marine equipment, firearms, hand tools, and oil and gas drilling machines. Custom 465 is mostly used for drivers, distractors, drill bits, and shafts.
Tech Steel & Materials offers Stainless Steel Custom 465 in one sub-type specifications and three shapes/forms:
- AMS 5936 (Bar, Forging, and Wire)
Chemical Composition of Stainless Steel Custom 465
*Not exclusively to the element mentioned, but that one predominates other elements that are used only in minimal quantities.
Fabrication and Working Instructions of Custom 465
Custom 465 Stainless Steel can be cold and hot worked with the following treatments:
- Hot working – solution anneal before hardening, then heat to 1850-2000° F (1010-1093° C) and air cool.
- Cold working – Alloy 465 can be readily cold formed by drawing or rolling thanks to its low annealed yield strength and low work hardening rate.
Mechanical Properties of Custom 465
|Condition||Specimen Orientation||Tensile Strength ksi||Yield Strength at 0.2% Offset ksi||Elongation in 2 Inches or 4D %||Reduction of Area %|
Physical Properties of Custom 465
|Annealed / CT||7.81|
Heat Treatment of Custom 465 Stainless Steel
The standard heat treatment for Stainless Steel Custom 465 is done on a solution-annealed material. Tech Steel & Materials already supplies this alloy in Condition A (solution annealed), which means that the part can be directly heat-treated with the following treatment:
- Heat the part to 1800° F ± 15° F (982° C ± 8° C) and hold at that temperature for one hour. Then cool rapidly by quenching for parts under 12’’, or air cool swiftly for parts over 12’’.
- Refrigerate to -100° F (-73° C) and hold for eight hours, followed by warming to room temperature. Please note that this process should be done in a 24-hour timeframe after solution annealing.
To achieve high strength levels of Custom 465 (Condition H 900, H 950, H 1000, H 1050, and H 1100), an additional age hardening step is required:
- Heat the part to 900-1150° F (482-621° C) and hold for four to eight hours, followed by air cooling for section sizes under 3’’ or quenching for sizes over 3’’. Please note that increasing the temperature increases the toughness of the part, without any significant effect on strength.
As for machinability, it is recommended to do it in the overaged H 1150M condition, but machining can also be done in the annealed/CT condition. The best heat treatment for easy machining is as follows:
- Heat the part to 1400° F ± 15° F (760° C ± 8° C) and leave it at that temperature for two hours, followed by standard air cooling. Then, reheat the part to 1150° F ± 15° F (621° C ± 8° C) and leave it at that temperature for four hours, followed by standard air cooling to room temperature.
- Annealing should be done after the heat treatment at a temperature of 1800° F (982° C).
- Finish with cold treatment at -100° F (-73° C).
Average Size Change of Custom 465 Stainless Steel (Solution annealed/CT to aged condition):
|Condition||Longitudinal (in/in)||Longitudinal (in/in)|