Database of properties for steel and alloy materials worldwide.

 

SA240 gr 321 Properties and Aplications

SA240 gr 321 is a type of stainless steel produced in accordance with ASTM A240 standard, which is often used in high-temperature and corrosive environments.

SS 321 Plate Equivalent grades

JIS G4304

ASTM

UNS

KS

EN10095

AS

CNS

SUS321

321

S32100

STS321

1.4541

321

321

Chemical composition:

Type

Grade

 

ASTM (A240M)

Others (JIS)

C

Si

Mn

P

S

Ni

Cr

Austenitic Steels

321

SUS321

≤0.08

≤0.75

≤2.00

≤0.045

≤0.030

9.0/12.0

17.0/19.0

Titanium (Ti): a minimum of 5 times the carbon (C) content, but not more than 0.70%.

Physical Properties

Grade

Density (kg/m3)

Elastic Modulus (GPa)

Mean Coefficient of Thermal Expansion (μm/m/°C)

Thermal Conductivity (W/m.K)

Specific Heat 0-100 °C (J/kg.K)

Electrical Resistivity (nΩ.m)

0-100 °C

0-315 °C

0-538 °C

at 100 °C

at 500 °C

321

8027

193

16.6

17.2

18.6

16.1

22.2

500

720

Mechanical Properties

Type

Mechanical Properties for Stainless Steel Plates, Stainless Steel Sheet

ASTM (A240M)

Others (JIS)

Tensile Properties

Hardness

Yield Strength (Mpa)

Tensile Strength (Mpa)

Elongation (%)

HBW

HRBW

Austenitic Steels

321

SUS321

≥205

≥515

≥40

≤217

≤95

SA240 gr 321 has good corrosion resistance in environments containing nitric acid and organic salts. It also has good high-temperature strength and can be used at temperatures up to approximately 900 degrees Celsius.

Applications of SA240 gr 321 include:

  • Components in the chemical and petrochemical industry
  • Equipment in thermal power plants and nuclear power plants
  • Heat-resistant equipment in the food and pharmaceutical industry
  • Applications in the medical field, such as in dental equipment.

 

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