321 Stainless Steel, annealed sheet

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321 Stainless Steel, annealed sheet
Categories:	Metal; Ferrous Metal; Stainless Steel; T 300 Series Stainless Steel
Material Notes:	Titanium-bearing, austenitic, chromium-nickel steel. Stabilized against carbide precipitation and designed to work within the temperature range where carbide precipitation develops. Similar to Type 304 except Ti content helps prevent chromium carbide precipitation resulting from welding or elevated temperatures. Stabilized at annealing temperatures between 950-1010°C (1750-1850°F). Resists scaling and vibration fatigue. Applications include aircraft exhaust stacks and manifolds, chemical processing equipment, weld equipment, jet engine parts.
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Physical Properties	Original Value	Comments

Density	8.00 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Rockwell B	80
Tensile Strength, Ultimate	620 MPa
Tensile Strength, Yield	240 MPa
Elongation at Break	45 %	in 50 mm
Modulus of Elasticity	193 - 200 GPa
Izod Impact	135 J
Charpy Impact	165 J	V-notch

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000720 ohm-cm	at 20ºC
Magnetic Permeability	1.008	at RT

Thermal Properties	Original Value	Comments
CTE, linear	16.7 µm/m-°C @Temperature 0.000 - 100 °C
	17.1 µm/m-°C @Temperature 0.000 - 315 °C
	18.5 µm/m-°C @Temperature 0.000 - 540 °C
	20.5 µm/m-°C @Temperature 20.0 - 925 °C
Specific Heat Capacity	0.500 J/g-°C @Temperature 0.000 - 100 °C
Thermal Conductivity	16.1 W/m-K @Temperature 100 °C
Melting Point	1400 - 1425 °C
Solidus	1400 °C
Liquidus	1425 °C
Maximum Service Temperature, Air	870 °C	Continuous Service
	925 °C	Intermittent

Component Elements Properties	Original Value	Comments
Carbon, C	<= 0.080 %
Chromium, Cr	17 - 19 %
Iron, Fe	65.45 - 73.6 %	As Balance
Manganese, Mn	<= 2.0 %
Nickel, Ni	9.0 - 12 %
Phosphorus, P	<= 0.045 %
Silicon, Si	<= 1.0 %
Sulfur, S	<= 0.030 %
Titanium, Ti	0.40 %	Minimum Ti content = 5 x Carbon content

References for this datasheet.

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MQ321A / 12815

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