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Elmet Technologies

AK Steel 309S Austenitic Stainless steel
Categories: Metal; Ferrous Metal; Austenitic; Stainless Steel; T 300 Series Stainless Steel
Material Notes: AK Steel 309S provides excellent corrosion resistance and heat resistance plus good strength at room and elevated temperatures. The alloy is non-magnetic as annealed and becomes slightly magnetic when cold worked. AK Steel 309S is identical to AK Steel 309, except for a lower carbon content that minimizes carbide precipitation and improves weldability.

Information provided by AK Steel
Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Density 9.01 g/cc0.326 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Rockwell B 8585Annealed
Tensile Strength, Ultimate 621 MPa90100 psiAnnealed
 145 MPa
@Temperature 871 °C		21000 psi
@Temperature 1600 °F
 441 MPa
@Temperature 538 °C		64000 psi
@Temperature 1000 °F
 545 MPa
@Temperature 204 °C		79000 psi
@Temperature 399 °F
Tensile Strength, Yield 310 MPa
@Strain 0.2 %		45000 psi
@Strain 0.2 %		Annealed
 120 MPa
@Strain 0.2 %,
Temperature 871 °C		17400 psi
@Strain 0.2 %,
Temperature 1600 °F
 200 MPa
@Strain 0.2 %,
Temperature 538 °C		29000 psi
@Strain 0.2 %,
Temperature 1000 °F
 262 MPa
@Strain 0.2 %,
Temperature 204 °C		38000 psi
@Strain 0.2 %,
Temperature 399 °F
Elongation at Break 45 %45 %in 2 inches, Annealed
 38 %
@Temperature 538 °C		38 %
@Temperature 1000 °F		in 2 inches
 46 %
@Temperature 204 °C		46 %
@Temperature 399 °F		in 2 inches
 50 %
@Temperature 871 °C		50 %
@Temperature 1600 °F		in 2 inches
Modulus of Elasticity 200 GPa29000 ksi
Izod Impact 140 J103 ft-lbV-Notch (Annealed)
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.0000780 ohm-cm0.0000780 ohm-cm
Magnetic Permeability <= 1.02<= 1.02H = 200 Oersted, Annealed
 
Thermal PropertiesMetricEnglishComments
CTE, linear  14.9 µm/m-°C
@Temperature 0.000 - 100 °C		8.28 µin/in-°F
@Temperature 32.0 - 212 °F
 18.0 µm/m-°C
@Temperature <=649 °C		10.0 µin/in-°F
@Temperature <=1200 °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  15.6 W/m-K
@Temperature 100 °C		108 BTU-in/hr-ft²-°F
@Temperature 212 °F
 18.7 W/m-K
@Temperature 500 °C		130 BTU-in/hr-ft²-°F
@Temperature 932 °F
Melting Point 1399 - 1454 °C2550 - 2649 °F
Solidus 1399 °C2550 °F
Liquidus 1454 °C2649 °F
 
Component Elements PropertiesMetricEnglishComments
Carbon, C <= 0.080 %<= 0.080 %
Chromium, Cr 22 - 24 %22 - 24 %
Iron, Fe 58.095 - 66 %58.095 - 66 %As Remainder
Manganese, Mn <= 2.0 %<= 2.0 %
Nickel, Ni 12 - 15 %12 - 15 %
Phosphorus, P <= 0.045 %<= 0.045 %
Silicon, Si <= 0.75 %<= 0.75 %
Sulfur, S <= 0.030 %<= 0.030 %

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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NAKS111 / 14714




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