What’s up guys? This is Michael with Michael Talks Metal back for part 2 of our talk on A286 today. Missed last week, stick around till the end and I’ll link to that video for ya! As I said, our topic for today is a deeper dive into the AMS specifications for alloy A-286 .
When we left you last time, we had an impressive list. We even added a few more today. Why so many? Lets take a look at some of the requirements in more detail to answer that question.
For most of these aircraft applications the premium aircraft quality AMS 2300 and Consumable Electrode Melting (CEM) requirements are common to these specifications. Exceptions are noted as CEM not req’d in the later section. Variations in restricted elements in the chemical composition can also apply to the individual standards.
The individual standards also specify the product form or forms that are within the scope .. IE bars and forgings, plate and sheet, etc.
In addition, the condition of the product is specified as either:
Solution treated at 1800 deg F
Solution treated at 1650 deg F
Solution treated at 1750 deg F
Solution treated at 1800 deg F and precipitation heat treated
Solution treated at 1650 deg F and precipitation heat treated
or when cold work strengthening is required
The permutations of melt requirements, product form, and the heat treatment / condition then results in the following description for each of the AMS standards in numerical order
|A286 AMS Specifications
|Sheet, Strip, and Plate 1800 deg F Solution Treated (CEM not Req’d)
|Bars and Wire 1800 deg F Solution Treated and Work Strengthened
|Bars, Wire, Forgings, Tubing, and Rings 1800 deg F Solution Treated
|Bars, Wire, Forgings, Tubing, and Rings 1800 deg F Solution Treated and Precipitation Heat Treated
|Bars, Wire, Forgings, and Tubing 1650 deg F Solution Treated
|Superseded by AMS 5732
|Superseded by AMS 5731
|Bars, Wire, Forgings, Tubing, and Rings 1650 deg F Solution Treated and Precipitation Heat Treated
|Sheet, Strip, and Plate 1800 deg F Solution Treated (welding grade)
|Bars, Wire, Forging, Tubing, and Rings 1750 deg F Solution Treated (welding grade)
Note that two of the listed standards have been superseded by others as the designated current replacement.
As we have told our viewers many times before, specifications, prints, and part requirements can add to or alter the information we have presented to you today….So for time 57 CHECK THE SPECS! Then Check the Specs AGAIN!!!! Thanks for watching, this is Michael with Michael Talks Metal. If you are still here and haven’t subscribed click here, if you missed our most recent video click here. Michlin is a supplier / distributor of A286 so check out michlinmetals.com for more info. See you next Thursday 10am, I’m out!