- 8R30 (tm)
- Project 70 321 ®*
- Remanit 4541 (tm)
Chemistry
Data
There is no chemistry data available for this grade.
Principal Design Features
The key feature of 321 stainless is its resistance to intergranular
corrosion. It employs titanium as a stabilizing element
against chromium carbide formation. This alloy also exhibits
strength characteristics superior to those of 304 stainless.
Applications
Jet engine parts, furnace heat treated parts, expansion
joints, turbo superchargers, oil refiners, exhaust manifolds
and high temperature chemical production equipment.
Machinability
Slightly tougher than 304 stainless, this material
will produce the same tough stringy chips. The use of slow
speeds and constant positive feeds will minimize this alloy's
tendency to work harden.
Welding
321 may be welded by all commonly used fusion and resistance
methods. Oxyacetylene welding is not recommended. When necessary,
use AWS E/ER347 filler metal.
Hot Working
Working temperatures of 2100-2300 F (1149-1260 C) are recommended
for forging, upsetting and other hot work processes. Do
not work this alloy at temperatures below 1700 F ( 927 C).
Material must be water quenched or fully annealed after
working to reattain maximum corrosion resistance.
Cold Working
Although this material requires higher initial forces than
304 stainless, it is quite tough and ductile and can be
readily stamped, blanked, spun and drawn.
Annealing
1800-2000 F (928-1093 C), air cool. This procedure will
result in maximum ductility. For maximum corrosion resistance,
see the note on stabilizing anneal under corrosion.
Hardening
This alloy does not harden by heat treating. Elevated properties
may only be obtained through cold reduction.
Mechanical Data
There is no Mechnical data available for this grade.
Disclaimer
This information is provided "as is" and Prayas
Metals, makes no warranty of any kind with respect to the
subject matter or accuracy of the information contained
herein. Prayas Metals, specifically disclaims all warranties,
expressed, implied or otherwise, including without limitation,
all warranties of merchantability and fitness for a particular
purpose.
In no event shall Prayas Metals, be liable for any special,
incidental, indirect or consequential damages of any kind
or any damages whatsoever resulting from loss of use, data,
profits, whether or not advised of the possibility of damage,
and on any theory of liability, arising out of or in connection
with the use of the information contained herein.
This publication may include technical inaccuracies or typographical
errors. Changes may be periodically made to the information
herein.
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