GEK Wiki / Metal Alloys for High Temp Operation
  • If you are citizen of an European Union member nation, you may not use this service unless you are at least 16 years old.

  • You already know Dokkio is an AI-powered assistant to organize & manage your digital files & messages. Very soon, Dokkio will support Outlook as well as One Drive. Check it out today!

View
 

Metal Alloys for High Temp Operation

This version was saved 10 years, 5 months ago View current version     Page history
Saved by jim mason
on November 1, 2013 at 8:48:02 pm
 

return to Practical Engineering

 

A good summary of various stainless steel alloys and their properties at high temp is here:  http://www.azom.com/Details.asp?ArticleID=1175 .  The main table of relevance from this article is reproduced below:

 

General summary for gasifier thermal application in ascending order of preference and price, seems to be:  304 - 321 - 310 - 253MA (2111HTR)

 

Table 1. Maximum service temperatures in dry air, based on scaling resistance (ref: ASM Metals Handbook)

Grade

Intermittent (°C)

Continuous (°C)

304

870

925

309

980

1095

310

1035

1150

316

870

925

321

870

925

410

815

705

416

760

675

420

735

620

430

870

815

2111HTR

1150

1150

 

article on 321 http://www.azom.com/article.aspx?ArticleID=967

 

Grades 321 and 347 are the basic austenitic 18/8 steel (Grade 304) stabilised by Titanium (321) or Niobium (347) additions. These grades are used because they are not sensitive to intergranular corrosion after heating within the carbide precipitation range of 425-850°C. Grade 321 is the grade of choice for applications in the temperature range of up to about 900°C, combining high strength, resistance to scaling and phase stability with resistance to subsequent aqueous corrosion.

Grade 321H is a modification of 321 with a higher carbon content, to provide improved high temperature strength.

 

Another good summary of metal alloys and their performance under various thermal and industrial conditions is here:

http://www.vici.com/ref/mat_met.php

 

A detailed review of the properties of Inconel, here:

http://docs.twpinc.com/Inconel-alloy-600-Sept-2008.pdf

 

 

Comments (0)

You don't have permission to comment on this page.