ATI Allegheny Ludlum 309H Austenitic Stainless Steel

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ATI Allegheny Ludlum 309H Austenitic Stainless Steel
Categories:	Metal; Ferrous Metal; Stainless Steel; T 300 Series Stainless Steel
Material Notes:	Characteristics: comparable corrosion resistance, superior resistance to oxidation, and the retention of a larger fraction of room temperature strength than common austenitic alloys. Good creep deformation resistance. Applications:Heat treatment industry-conveyor belts, rollers, burner parts, refractory supports, retorts linings, oven linings, fans, tube hangers, baskets, and trays. Chemical process industry- containers for hot concentrated acids, ammonia, and sulfur dioxide. Food processing industry- used in contact with hot acetic and citric acid. Information provided by Allegheny Ludlum
Key Words:	UNS S30909
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Physical Properties	Metric	English	Comments

Density	8.03 g/cc	0.290 lb/in³

Mechanical Properties	Metric	English	Comments
Creep Strength	24.0 MPa @Temperature 788 °C, Time 3.60e+7 sec	3480 psi @Temperature 1450 °F, Time 10000 hour	1% creep
	83.0 MPa @Temperature 593 °C, Time 3.60e+7 sec	12000 psi @Temperature 1100 °F, Time 10000 hour	1% creep
Rupture Strength	17.0 MPa @Temperature 899 °C, Time 3.60e+7 sec	2470 psi @Temperature 1650 °F, Time 10000 hour
	83.0 MPa @Temperature 677 °C, Time 3.60e+7 sec	12000 psi @Temperature 1250 °F, Time 10000 hour
Modulus of Elasticity	200 GPa	29000 ksi
Poissons Ratio	0.30	0.30	calculated
Shear Modulus	77.0 GPa	11200 ksi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000780 ohm-cm @Temperature 20.0 °C	0.0000780 ohm-cm @Temperature 68.0 °F
	0.0001148 ohm-cm @Temperature 1200 °C	0.0001148 ohm-cm @Temperature 2190 °F
Magnetic Permeability	1.02	1.02	at 200H

Thermal Properties	Metric	English	Comments
CTE, linear	15.6 µm/m-°C @Temperature 20.0 - 100 °C	8.67 µin/in-°F @Temperature 68.0 - 212 °F
	17.6 µm/m-°C @Temperature 20.0 - 500 °C	9.78 µin/in-°F @Temperature 68.0 - 932 °F
	19.4 µm/m-°C @Temperature 20.0 - 1000 °C	10.8 µin/in-°F @Temperature 68.0 - 1830 °F
Specific Heat Capacity	0.502 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 20.0 - 100 °C	108 BTU-in/hr-ft²-°F @Temperature 68.0 - 212 °F
	18.7 W/m-K @Temperature 20.0 - 500 °C	130 BTU-in/hr-ft²-°F @Temperature 68.0 - 932 °F

Component Elements Properties	Metric	English	Comments
Carbon, C	0.040 - 0.10 %	0.040 - 0.10 %
Chromium, Cr	22 - 24 %	22 - 24 %
Iron, Fe	58.075 - 63.135 %	58.075 - 63.135 %	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.

NL1002 / 17770

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