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Stainless Steel 321 Material Property Data Sheet

Do you need custom fasteners created with Stainless Steel 321? Since our inception, Vegas Fastener Manufacturing has met every challenge of providing Quality, Timely, Cost-effective solutions for specialty fastener applications. Every product is built to your specifications, using your prints if necessary.

Below are the technical specifications of the Stainless Steel 321 Bar Stock we have available to meet your needs.

 

AK Steel Austenitic Stainless Steel 321


Subcategory: Metal; Stainless Steel; T 300 Series Stainless Steel; Austenitic

Close Analogs: Iron content calculated as remainder

Component   Wt. %
CMax 0.08 
Cr17 - 19 
Fe65.295 - 74 
MnMax 2 
Component   Wt. %
N Max 0.1 
Ni9 - 12 
PMax 0.045 
Component   Wt. %
SMax 0.03 
SiMax 0.75 
TiMax 0.7 

Material Notes:
AK Steel 321 is a stabilized austenitic stainless steel similar to Type 304 but with a titanium addition. This titanium addition reduces or prevents carbide precipitation during welding and in 427 - 816C service. It also improves the elevated temperature properties of the alloy. AK Steel 321 provides excellent resistance to oxidation and corrosion and possesses good creep strength. It is used primarily in applications involving continuous and intermittent service temperatures within the carbide precipitation range of 427 - 816C.

Information provided by AK Steel

Physical PropertiesMetricEnglishComments
Density9.01 g/cc0.326 lb/in 

Mechanical Properties
Hardness, Rockwell B8080 
Tensile Strength, Ultimate621 MPa90100 psi 
Tensile Strength, Yield276 MPa40000 psi 0.2% YS
Elongation at Break45 %45 % in 2 inches
Modulus of Elasticity193 GPa28000 ksi tension
Modulus of Elasticity78 GPa11300 ksi torsion

Electrical Properties
Electrical Resistivity7.2e-005 ohm-cm7.2e-005 ohm-cm 
Magnetic PermeabilityMax 1.02Max 1.02 H = 200 Oersteds, Annealed

Thermal Properties
CTE, linear 20C16.6 m/m-C9.22 in/in-F 0 to 100C
CTE, linear 20C20.2 m/m-C11.2 in/in-F to 871C
Heat Capacity0.5 J/g-C0.12 BTU/lb-F 0C to 100C
Thermal Conductivity16 W/m-K111 BTU-in/hr-ft-F 100C
Thermal Conductivity22 W/m-K153 BTU-in/hr-ft-F 500C

Processing Properties
Melt Temperature1371 - 1399 C2500 - 2550 F 

 


This information is provided by MatWeb.com, The Online Materials Database and is reprinted with their permission.

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