406 Stainless Steel

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406 Stainless Steel
Categories:	Metal; Ferrous Metal; Stainless Steel; T 400 Series Stainless Steel
Material Notes:	Ferritic stainless steel with excellent oxidation resistance in the temperature range 1600°F- >2200°F, high electrical resistivity, high resistance to sulfidation, high resistance to carburization. Applications include automotive exhaust system components, furnace parts, heat exchangers, recuperator parts, kiln lining, and refractory reinforcement fibers. Information provided by Allegheny Ludlum and the reference(s).
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Physical Properties	Metric	English	Comments

Density	7.34 g/cc	0.265 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell B	89	89
Tensile Strength, Ultimate	554 MPa	80400 psi
Tensile Strength, Yield	412 MPa	59800 psi
Elongation at Break	28 %	28 %	in 2"

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.000120 ohm-cm @Temperature 20.0 °C	0.000120 ohm-cm @Temperature 68.0 °F
	0.000120 ohm-cm @Temperature 204 °C	0.000120 ohm-cm @Temperature 399 °F
	0.000125 ohm-cm @Temperature 427 °C	0.000125 ohm-cm @Temperature 801 °F
	0.000134 ohm-cm @Temperature 649 °C	0.000134 ohm-cm @Temperature 1200 °F

Thermal Properties	Metric	English	Comments
CTE, linear	11.3 µm/m-°C @Temperature 20.0 - 200 °C	6.28 µin/in-°F @Temperature 68.0 - 392 °F
	12.2 µm/m-°C @Temperature 20.0 - 500 °C	6.78 µin/in-°F @Temperature 68.0 - 932 °F
	14.2 µm/m-°C @Temperature 20.0 - 1000 °C	7.89 µin/in-°F @Temperature 68.0 - 1830 °F

Component Elements Properties	Metric	English	Comments
Aluminum, Al	4.0 %	4.0 %
Carbon, C	0.025 %	0.025 %
Chromium, Cr	13 %	13 %
Iron, Fe	82.76 %	82.76 %	As Remainder
Manganese, Mn	0.035 %	0.035 %
Silicon, Si	0.30 %	0.30 %
Titanium, Ti	0.40 %	0.40 %

Descriptive Properties
Anodic Polarization	Ep=0.28 volts vs. saturated calomel electrode, Er=-0.17 volts vs. saturated calomel electrode		1000 ppm Cl-(NaCl) pH5
	IC=2.0mA/cm2		1 Normal H2SO4
Corrosion Rate mils per year	0.04		20% Acetic Acid
	1.85		20% Phosphoric Acid
	1803.1		10% Sodium Bisulfate
	3549.9		10% Sulfamic Acid
	399.24		10% Oxalic Acid
	8.64		65% Nitric Acid
Crevice Corrosion-Average Weight Loss, g/cm2	0.0336 (21.1°C, 72 Hours, Plain)		10% Ferric Chloride Rubber Band Test
	0.327 (21.1°C, 72 Hours, Welded)		10% Ferric Chloride Rubber Band Test
Stress Corrosion Cracking Resistance	No cracks (Plain and Welded)		33% Lithium Chloride(500 hours), 42% Magnesium Chloride(200 hours), 26% Sodium Chloride(1000 hours), 50% Sodium Hydroxide(200 hours)

References for this datasheet.

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