R.K. Steels (India)
Home
About us
Technical Data
Products
Services
Contact us
Feedback
 
 
Welcome to R.K.Steels

STAINLESS STEEL 321 - ALLOY COMPOSITION

Find below the search results for the material you've specified. Please note here this information is NOT to be used for design purposes, and in no event shall MSO be liable for any damages arising from the misuse of this information

Stainless Steel 321

Related Metals:

8R30(tm)
Project 70 321(tm)
Remanit 4541(tm)                                    

Specifications:

AISI 321
AMS 5510
AMS 5557
AMS 5559
AMS 5570
AMS 5576
AMS 5645
AMS 5689
ASTM A167
ASTM A182
ASTM A193 (321,B8T, B8TA)
ASTM A194 (321,B8T, B8TA)
ASTM A213
ASTM A240
ASTM A249
ASTM A269
ASTM A271
ASTM A276
ASTM A312
ASTM A314
ASTM A320 (321,B8T, B8TA)
ASTM A336
ASTM A358
ASTM A376
ASTM A403
ASTM A409
ASTM A430
ASTM A473
ASTM A479
ASTM A511
ASTM A554
ASTM A580
ASTM A632
ASTM A774
ASTM A778
ASTM A813
ASTM A814
DIN 1.4541
MIL S-27419
MIL T-6737
QQ S763
QQ S766
UNS S32100

Chemistry Data

Carbon

0.08 max

Chromium

17 - 19

Iron

Balance

Manganese

2 max

Nickel

9 - 12

Phosphorus

0.045 max

Silicon

1 max

Sulphur

0.03 max

Titanium

Min:5 x C

General Information

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.


Corrosion Resistance

Organic media, atmospheric conditions, very weak acids, milk and other dairy products will have little affect on 321. Far superior to unstabilized chromium-nickel steels in terms of corrosion in the range of 800-1500 F(427-816 C).For maximum corrosion res


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 reattai


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.


Physical Data

Density (lb / cu. in.)

0.29

Specific Gravity

7.9

Specific Heat (Btu/lb/Deg F - [32-212 Deg F])

0.12

Electrical Resistivity (microhm-cm (at 68 Deg F))

432

Melting Point (Deg F)

2600

Modulus of Elasticity Tension

28

Mechanical Data

MSO currently has no data available for this grade.

 

 

Copyright 2005 R.K.Steels (India). All rights reserved