384 Stainless Steel

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384 Stainless Steel
Categories:	Metal; Ferrous Metal; Heat Resisting; Stainless Steel; T 300 Series Stainless Steel
Key Words:	UNS S38400, ASTM A493, SAE J405 (30384), 18-8
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Physical Properties	Metric	English	Comments

Density	8.00 g/cc	0.289 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	126	126	before testing
Hardness, Knoop	145	145	Converted from Brinell
Hardness, Rockwell B	71	71	Converted from Brinell
Hardness, Vickers	131	131	Converted from Brinell
Tensile Strength, Ultimate	510 MPa	74000 psi
	385 MPa @Temperature 540 °C	55800 psi @Temperature 1000 °F
	405 MPa @Temperature 400 °C	58700 psi @Temperature 752 °F
	415 MPa @Temperature 260 °C	60200 psi @Temperature 500 °F
	470 MPa @Temperature 120 °C	68200 psi @Temperature 248 °F
Tensile Strength, Yield	205 MPa @Strain 0.2 %	29700 psi @Strain 0.2 %
	145 MPa @Strain 0.2 %, Temperature 260 °C	21000 psi @Strain 0.2 %, Temperature 500 °F
	145 MPa @Strain 0.2 %, Temperature 400 °C	21000 psi @Strain 0.2 %, Temperature 752 °F
	170 MPa @Strain 0.2 %, Temperature 120 °C	24700 psi @Strain 0.2 %, Temperature 248 °F
Elongation at Break	52.5 %	52.5 %	in 50 mm
	43.2 % @Temperature 540 °C	43.2 % @Temperature 1000 °F	in 50 mm
	45.8 % @Temperature 400 °C	45.8 % @Temperature 752 °F	in 50 mm
	47.3 % @Temperature 260 °C	47.3 % @Temperature 500 °F	in 50 mm
	49.4 % @Temperature 120 °C	49.4 % @Temperature 248 °F	in 50 mm
Modulus of Elasticity	193 GPa	28000 ksi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000791 ohm-cm @Temperature 20.0 °C	0.0000791 ohm-cm @Temperature 68.0 °F
Magnetic Permeability	1.02	1.02	approximate value for the annealed condition at RT

Thermal Properties	Metric	English	Comments
CTE, linear	17.3 µm/m-°C @Temperature 0.000 - 100 °C	9.61 µin/in-°F @Temperature 32.0 - 212 °F
	17.8 µm/m-°C @Temperature 0.000 - 260 °C	9.89 µin/in-°F @Temperature 32.0 - 500 °F
	18.4 µm/m-°C @Temperature 0.000 - 540 °C	10.2 µin/in-°F @Temperature 32.0 - 1000 °F
	18.7 µm/m-°C @Temperature 0.000 - 650 °C	10.4 µin/in-°F @Temperature 32.0 - 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	16.3 W/m-K @Temperature 100 °C	113 BTU-in/hr-ft²-°F @Temperature 212 °F
	21.5 W/m-K @Temperature 500 °C	149 BTU-in/hr-ft²-°F @Temperature 932 °F
Melting Point	1400 - 1455 °C	2550 - 2651 °F
Solidus	1400 °C	2550 °F
Liquidus	1455 °C	2651 °F

Component Elements Properties	Metric	English	Comments
Carbon, C	<= 0.080 %	<= 0.080 %
Chromium, Cr	16 %	16 %
Iron, Fe	63 %	63 %
Manganese, Mn	<= 2.0 %	<= 2.0 %
Nickel, Ni	18 %	18 %
Phosphorus, P	<= 0.045 %	<= 0.045 %
Silicon, Si	<= 1.0 %	<= 1.0 %
Sulfur, S	<= 0.030 %	<= 0.030 %

References for this datasheet.

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