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321 stainless steel material property data sheet - product availability and request a quote

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Metal Suppliers Online: Material Property Data

Stainless Steel 321


Availability

Stainless Steel 321 is stocked by 138 North American distributors and produced by 85 large mills. Distributors will offer small quantity buys while mills will generally only sell large quantities, with delivery times anywhere from 10 to 50 weeks depending on size and form required

This material is stocked primarily in Flat Rolled Products by 65 distributors but is also available to a lesser extent in Bar Products, Tubular Products, Wire Products, Piping Components, Forging Products, Fasteners, Shapes, and Structurals.

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Specifications

The following specifications cover Stainless Steel 321

  • 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

Property Results

Related Metals:


Chemistry Data : [top]

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


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.

Physical Data : [top]

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 : [top]

MSO currently has no data available for this grade.



Videos :

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