AMS2759 is the SAE family of specifications for heat treating steel parts in aerospace. A general document sets common requirements, and slash sheets cover specific steel types and processes. When a purchase order says “heat treat per AMS2759/x”, temperatures, times, quench, testing and records come from that sheet.
Main slash sheets
- AMS2759/1: carbon and low-alloy steels
- AMS2759/2: high-strength low-alloy steels
- AMS2759/3: precipitation-hardening corrosion-resistant and maraging steels
- AMS2759/4: austenitic corrosion-resistant steels
- AMS2759/5: martensitic corrosion-resistant steels
- AMS2759/6: gas nitriding
- AMS2759/7: carburizing
- AMS2759/9: hydrogen embrittlement relief (baking after plating)
Scope and numbering can change between revisions; check the current list.
Common mistakes
- Choosing the wrong slash sheet for the material
- Picking the temper temperature by habit instead of the required hardness
- Missing the baking window after plating
- Using the wrong table to convert hardness to strength
Which of these is in your records?
Knowing the list is easy. The real question is which one sits in your own loads. Upload your furnace record and test results to NTB SpecPro and see in minutes which points carry risk, why, and what to do next.
The NTB SpecPro heat treat module compares your furnace record and test results with the applicable AMS2759 sheet and prepares the report. Final evaluation stays with your authorized heat treat personnel.
General information only; does not replace the specification.