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Stainless Steel 321

Material: AISI 321, UNS S32100, 1.4541
Type: Pipes
          Plates
          Bars
          Fittings
          Forgings
          Flanges
          Prefabrication
Availability:
Stainless Steel 321 Features:

Grades 321 and 347 are the basic austenitic 18/8 steel (Grade 304) stabilized 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.


Stainless Steel 321 Chemical Composition

Grade

UNS

C≤

Mn

P≤

S≤

Si≤

Cr

Mo

Ni

321

S32100

0.08

2

0.045

0.03

0.75

17.0-19.0

-

9.0-12.0


Stainless Steel 321 Mechanical Properties 

Grade

Tensile, min, ksi[MPa]

Yield, min, ksi[MPa]

Elongation, %(min)

Hardness, HB(max)

321H

75【515】

30【205】

40

217


Stainless Steel 321 Equivalent Grades

STANDARD

WERKSTOFF NR.

UNS

JIS

EN

321

1.4541

S32100

SUS321

X6CrNiTi18-10


Stainless Steel 321 ASTM   Specification

Pipe,
SMLS& Welded

Tube,
SMLS& Welded

Tube ,
Seamless

Sheet/Plate

Bar /Rod

Forging /Flange

BW Fittings

ASTM A312

ASTM A269

ASTM A213

ASTM A240

ASTM A276/A479

ASTM A182

ASTM A403


Stainless Steel 321 Applications

  • Annealing covers

  • High-temp tempering equipment

  • Chemical processing equipment

  • Automotive exhaust systems

  • Firewalls

  • Boiler casings

  • Aircraft exhaust stacks and manifolds

  • Superheaters

  • Gas and oil refinery equipment


JN Alloy Products


JN Alloy is a distributor and product manufacturer of stainless steel, duplex steel, and nickel.
Tel: +86 19339900211
Add: Stainless steel Market 289, Xinwu District , Wuxi, China
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