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	Original Value	Comments

Density	8.03 g/cc

Mechanical Properties	Original Value	Comments
Creep Strength	24.0 MPa @Temperature 788 °C, Time 3.60e+7 sec	1% creep
	83.0 MPa @Temperature 593 °C, Time 3.60e+7 sec	1% creep
Rupture Strength	17.0 MPa @Temperature 899 °C, Time 3.60e+7 sec
	83.0 MPa @Temperature 677 °C, Time 3.60e+7 sec
Modulus of Elasticity	200 GPa
Poissons Ratio	0.30	calculated
Shear Modulus	77.0 GPa

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000780 ohm-cm @Temperature 20.0 °C
	0.0001148 ohm-cm @Temperature 1200 °C
Magnetic Permeability	1.02	at 200H

Thermal Properties	Original Value	Comments
CTE, linear	15.6 µm/m-°C @Temperature 20.0 - 100 °C
	17.6 µm/m-°C @Temperature 20.0 - 500 °C
	19.4 µm/m-°C @Temperature 20.0 - 1000 °C
Specific Heat Capacity	0.502 J/g-°C @Temperature 0.000 - 100 °C
Thermal Conductivity	15.6 W/m-K @Temperature 20.0 - 100 °C
	18.7 W/m-K @Temperature 20.0 - 500 °C

Component Elements Properties	Original Value	Comments
Carbon, C	0.040 - 0.10 %
Chromium, Cr	22 - 24 %
Iron, Fe	58.075 - 63.135 %	As Remainder
Manganese, Mn	2.0 %
Nickel, Ni	12 - 15 %
Phosphorus, P	0.045 %
Silicon, Si	0.75 %
Sulfur, S	0.030 %

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NL1002 / 17770

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