Titanium and Hastalloy service in high temperature
Titanium and Hastalloy service in high temperature
(OP)
I would like to use titanium to serve in a furnace-500C.
Not sure what properties (for example, titanium) I need to know whether it is suitable to use?
For example, the thermal coefficient...
I found out that Titanium is cheaper than Hastalloy at some point.
Need help...
Not sure what properties (for example, titanium) I need to know whether it is suitable to use?
For example, the thermal coefficient...
I found out that Titanium is cheaper than Hastalloy at some point.
Need help...





RE: Titanium and Hastalloy service in high temperature
http://www.timet.com/datasheets-and-literature
Look at this information;
http://www.specialmetals.com/index.php
Compare and contrast.
RE: Titanium and Hastalloy service in high temperature
There are Ti alloys that can be used at higher temps, but they get very expensive.
What characteristics are you interested in?
Why Ti vs Alloy C?
= = = = = = = = = = = = = = = = = = = =
Plymouth Tube
RE: Titanium and Hastalloy service in high temperature
RE: Titanium and Hastalloy service in high temperature
Now I choose SS316 base on "Recommended Material for furnace parts and fixtures" and I am "familiar" with it.
I refer to this book: Heat-resistant Materials edited by Joseph R. Davis
But if you guys have more inputs/recommendation, please let me know.
Thanks guys!
RE: Titanium and Hastalloy service in high temperature
RE: Titanium and Hastalloy service in high temperature
RE: Titanium and Hastalloy service in high temperature
316, 309, 310, 330, 800, 600, and then other special Ni alloys.
It all depends on how much stress is involved, will the temperature cycle (and how quickly), and what impurities are involved.
And don't build the structure too rigid. With temperature cycling parts will either distort or fail. It is better to have distortion.
= = = = = = = = = = = = = = = = = = = =
Plymouth Tube
RE: Titanium and Hastalloy service in high temperature
RE: Titanium and Hastalloy service in high temperature
RE: Titanium and Hastalloy service in high temperature
RE: Titanium and Hastalloy service in high temperature
The doc linked by Metengr is the real deal.
You need to balance fig 6 (strength) and table 5 (oxidation damage).
= = = = = = = = = = = = = = = = = = = =
Plymouth Tube
RE: Titanium and Hastalloy service in high temperature
RE: Titanium and Hastalloy service in high temperature
Meaning that is it all the material had performed annealing before selling it to customer?
RE: Titanium and Hastalloy service in high temperature
RE: Titanium and Hastalloy service in high temperature
How about cold rolled and hot rolled? Or it doesn't matter of the raw process since annealing will do the job (stress relief)?
RE: Titanium and Hastalloy service in high temperature
Each ASTM product spec has a required condition. For sheet and plate annealed is by far the most common. Long products (bar and structurals) can be ordered both ways. (sheet can also, but that is very special)
= = = = = = = = = = = = = = = = = = = =
Plymouth Tube
RE: Titanium and Hastalloy service in high temperature
Let say if I have a part and machine it to size. Material is 304SS (don't know it is annealed or not, how it is made from raw, etc, because not specify in the drawing).
It had about overall of .300" thick, width is about .500" and 12" outside diameter with some complex shape.
I want to hold the flatness and some other tolerance, if I annealed this part, will it change the form (in terms of tolerance, not about the phase)?
And call it for Full Annealing, Process Annealing or Stress Relief Annealing ...?
RE: Titanium and Hastalloy service in high temperature
All you can do is full solution anneal.
What is critical is the uniformity of the cooling.
If dimensions are critical after some thermal cycles,
the piece should be annealed before machining, maybe again after rough machining.
And then maybe even again after it is done.
Yes you will get distortion. Variations in section thickness almost guarantee that you will.
= = = = = = = = = = = = = = = = = = = =
Plymouth Tube
RE: Titanium and Hastalloy service in high temperature
The issue with Ti isn't reduced strength per se- it's reduced ductility due to oxygen and nitrogen pick-up at elevated temperatures over the longer term. Piping code uses are limited to 600 F (315 C) for this reason.
RE: Titanium and Hastalloy service in high temperature