Author: Gerardo Errichiello

Published on 11/8/2022

What has changed in AMS (Aerospace Material Specifications) 2750 rev. G?

AMS 2750F has been reviewed and updated with the revision G at the end of June 2022, the document has the same length. Revision G deleted some tables, now there are only 22. Small changes have been made to better clarify the meaning. Transition requirements from Rev. E to Rev. F (allowed for 2 years) have been eliminated with only one transition exception:

  • Transition exception

Digital recording instruments that read only integers may be used for 1 year after the release of AMS 2750 Rev. G and must have a maximum calibration accuracy of ±1 °C or ±0.2% of the temperature reading rounded toward the smallest integer.

This latest transition is extended to 1 year after the release of Rev. G (see, so applicable from June 29, 2023 (as the last date), then all temperature recorders must be digital and read the decimal degree (°C or °F).

What has changed?

  • Rev. G removed all references to analog instruments, only the digital ones are allowed!
  • Sensitivity Test has been deleted and no longer required for digital instruments ....... however you should take into account your customers’ requirements.
  • For load sensors, required in vacuum furnaces, records must include sensor batch number, load cycle, temperature and usage count  which must include usage during SAT and TUS.
  • Table 6 rewritten to remove decimals – It rearranges Celsius version of Rev. E. all the article.

Published on 9/1/2021

AMS 2750F Pyrometric requirements for thermal treatments: “Radiation Survey”

What are the requirements for a radiation survey according to AMS 2750F (Aerospace Material Specifications)?

First of all, it is important to state that such a survey is required under AMS 2750, exclusively for furnaces used for the Thermal Treatment of Aluminium Alloys and it is limited to process temperatures above 427°C.

Therefore, it is mainly for plants dedicated to Thermal Treatment of Solubilisation. The solubilisation temperature for many alloys is very close to the eutectic melting point and this is why in these types of furnaces, it is also necessary to test the radiation effect directly on the metal as well as measuring and certifying the temperature uniformity of the operating volume qualified within the limits required by the applicable specifications. all the article.

Published on 4/12/2021
Categories: Aerospace

AMS 2750F pyrometric requirements for heat treatments: calibrating process instrumentation

There are many innovations introduced by AMS (Aerospace Material Specifications) 2750 revision F concerning the process instrumentation.

We will analyze the 4 new requirements requested by the legislation and the necessary precautions regarding the instrumentation calibration.

We will conclude by listing in detail all the information to be reported on the instrument calibration certificates. all the article.

Published on 2/9/2021
Categories: Aerospace
Tags: Nadcap, Test

AMS 2750F pyrometric requirements: what changes for the equipment of heat treatment furnaces

Revision F of the AMS (Aerospace Material Specifications) 2750 introduces three important changes concerning the equipment of the instrumentation of the heat treatment furnaces.

Which are the changes to the uniformity requirements required by the technical specifications of the process and by the technical specifications of the material?
How are the types of instrumentation of heat treatment plants classified?
And finally, what is the new D+ instrumentation type? all the article.

Published on 12/14/2020
Categories: Aerospace
Tags: Nadcap, Test

AMS 2750F pyrometric requirements for heat treatments: what’s the comparative SAT

Revision F of the AMS (Aerospace Material Specifications) 2750 introduces many new features, in particular there are limitations on the alternate SAT and some conditions in which it is necessary to replace it with the comparative SAT.

What is the comparative SAT?
What are the operational procedures of the comparative SAT?
Is it possible to effectively measure the maintenance of the qualification performance of our plant and consequently the operational continuity? all the article.

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