Crucible Steel 446 Chromium Steel

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Crucible Steel 446 Chromium Steel
Categories:	Metal; Ferrous Metal; Stainless Steel
Material Notes:	Crucible 446 is a non-hardenable chromium steel which has the highest corrosion and heat resisting properties of the straight chromium steels. This grade is magnetic at all times. Information provided by Crucible Specialty Metals.
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Physical Properties	Metric	English	Comments

Specific Gravity	7.65 g/cc	7.65 g/cc

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	170	170
Tensile Strength, Ultimate	552 MPa	80000 psi
	17.2 MPa @Temperature 1040 °C	2500 psi @Temperature 1900 °F
	117 MPa @Temperature 704 °C	17000 psi @Temperature 1300 °F
Tensile Strength, Yield	345 MPa @Strain 0.2 %	50000 psi @Strain 0.2 %
Elongation at Break	25 %	25 %	in 2"
Reduction of Area	45 %	45 %
Creep Strength	2.068 MPa @Temperature 816 °C	299.9 psi @Temperature 1500 °F	0.0001% per hour
	41.37 MPa @Temperature 538 °C, Time 3.60e+7 sec	6000 psi @Temperature 1000 °F, Time 10000 hour	Creep rate: 0.0001% per hour
Rupture Strength	3.447 MPa @Temperature 871 °C, Time 3.60e+6 sec	500.0 psi @Temperature 1600 °F, Time 1000 hour
	5.516 MPa @Temperature 871 °C, Time 3.60e+6 sec	800.0 psi @Temperature 1600 °F, Time 1000 hour
	20.68 MPa @Temperature 593 °C, Time 3.60e+7 sec	3000 psi @Temperature 1100 °F, Time 10000 hour
	38.61 MPa @Temperature 593 °C, Time 3.60e+6 sec	5600 psi @Temperature 1100 °F, Time 1000 hour
Modulus of Elasticity	200 GPa	29000 ksi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000670 ohm-cm @Temperature 23.0 °C	0.0000670 ohm-cm @Temperature 73.4 °F

Thermal Properties	Metric	English	Comments
CTE, linear	10.4 µm/m-°C @Temperature 0.000 - 100 °C	5.80 µin/in-°F @Temperature 32.0 - 212 °F
	12.1 µm/m-°C @Temperature 0.000 - 982 °C	6.70 µin/in-°F @Temperature 32.0 - 1800 °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	20.92 W/m-K @Temperature 93.3 °C	145.2 BTU-in/hr-ft²-°F @Temperature 200 °F
	24.38 W/m-K @Temperature 538 °C	169.2 BTU-in/hr-ft²-°F @Temperature 1000 °F
Melting Point	1430 - 1510 °C	2600 - 2750 °F
Solidus	1430 °C	2600 °F
Liquidus	1510 °C	2750 °F

Component Elements Properties	Metric	English	Comments
Carbon, C	<= 0.20 %	<= 0.20 %
Chromium, Cr	23 - 27 %	23 - 27 %
Iron, Fe	>= 69.98 %	>= 69.98 %	As Remainder
Manganese, Mn	<= 1.5 %	<= 1.5 %
Nitrogen, N	<= 0.25 %	<= 0.25 %
Phosphorus, P	<= 0.040 %	<= 0.040 %
Silicon, Si	<= 1.0 %	<= 1.0 %
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.

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NCRUC050 / 16043

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