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AK Steel 321 Austenitic Stainless steel

Category Metal , Ferrous Metal , Austenitic , Stainless Steel , T 300 Series Stainless Steel
Manufacturer AK Steel
Trade Name
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
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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 - 816°C 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 - 816°C.Information provided by AK Steel
Physical Properties Metric English Comments
Density 9.01 g/cc
0.326 lb/in³
Mechanical Properties Metric English Comments
Hardness, Rockwell B 80
80
Tensile Strength, Ultimate 621 MPa
90100 psi
Tensile Strength, Yield 276 MPa

@Strain 0.200 %
40000 psi

@Strain 0.200 %
Elongation at Break 45 %
45 %
in 2 inches
Modulus of Elasticity 193 GPa
28000 ksi
tension
Poissons Ratio 0.24
0.24
Calculated
Shear Modulus 78.0 GPa
11300 ksi
torsion
Thermal Properties Metric English Comments
CTE, linear 16.6 µm/m-°C

@Temperature 0.000 - 100 °C
9.22 µin/in-°F

@Temperature 32.0 - 212 °F
20.2 µm/m-°C

@Temperature <=871 °C
11.2 µin/in-°F

@Temperature <=1600 °F
Specific Heat Capacity 0.500 J/g-°C

@Temperature 0.000 - 100 °C
0.120 BTU/lb-°F

@Temperature 32.0 - 212 °F
Thermal Conductivity 16.0 W/m-K

@Temperature 100 °C
111 BTU-in/hr-ft²-°F

@Temperature 212 °F
22.0 W/m-K

@Temperature 500 °C
153 BTU-in/hr-ft²-°F

@Temperature 932 °F
Melting Point 1371 - 1399 °C
2500 - 2550 °F
Solidus 1371 °C
2500 °F
Liquidus 1399 °C
2550 °F
Component Elements Properties Metric English Comments
Carbon, C <= 0.080 %
<= 0.080 %
Chromium, Cr 17 - 19 %
17 - 19 %
Iron, Fe 65.295 - 74 %
65.295 - 74 %
As Remainder
Manganese, Mn <= 2.0 %
<= 2.0 %
Nickel, Ni 9.0 - 12 %
9.0 - 12 %
Nitrogen, N <= 0.10 %
<= 0.10 %
Phosphorous, P <= 0.045 %
<= 0.045 %
Silicon, Si <= 0.75 %
<= 0.75 %
Sulfur, S <= 0.030 %
<= 0.030 %
Titanium, Ti <= 0.70 %
<= 0.70 %
Electrical Properties Metric English Comments
Electrical Resistivity 0.0000720 ohm-cm
0.0000720 ohm-cm
Magnetic Permeability <= 1.02
<= 1.02
H = 200 Oersteds, Annealed
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