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Stainless Steel 321H

Material: Grade 321H, UNS S32109, 1.4878
Type: Pipes
          Plates
          Bars
          Fittings
          Forgings
          Flanges
          Prefabrication
Availability:
Stainless Steel 321H Features:

321H stainless steel is a widely used stainless steel, where parts are heated within carbide-precipitation temperature range (800°F-1500°F) and exposed to corrosive atmosphere.  321 stainless steel is similar to 304 stainless steel, but with higher nickel content and stabilized with titanium. 


Titanium preferentially reacts with carbon in the steel and prevents precipitation of chromium carbides at the grain boundaries, thus preserving corrosion-resistant properties by preventing depletion of chromium near the grain boundaries during exposure within critical temperature range. This grade responds well to hardening by cold working.


321H, is a titanium stabilized austenitic stainless steel that is known for its general corrosion resistance. This higher carbon version of Type 321 stainless steel offers a wide variety of benefits including:

  • Excellent resistance oxidation to 1500°F (816°C)

  • Good low temperature toughness

  • Comparable corrosion resistance and machinability to Type 304

  • Readily welded by most standard processes

  • Very ductile and forms easily


Stainless steel 321H Chemical Composition, %

Grade

C≤

Mn≤

P≤

S≤

Si≤

Cr

Ni

Ti

321H

0.04-0.1

2.0

0.045

0.03

0.75

17.0-19.0

9.0-12.0

4*(C+N)-0.7


Stainless steel 321H 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 321H Physical Properties

Density: 7.9 g/cm3


Stainless steel 321H Equivalent Grades

STANDARD

WERKSTOFF NR.

UNS

JIS

EN

321H

1.4878

S32109

SUS 321H

X12CrNiTi18-9


Stainless steel 321H 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 321H Application

  • Chemical and Petrochemical processing

  • Pharmaceutical production

  • Waste treatment including thermal oxidizers

  • Equipment and storage units for Food processing

  • Aerospace applications


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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