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Elmet Technologies

Crucible Steel 440A Chromium Steel
Categories: Metal; Ferrous Metal; Stainless Steel; T 400 Series Stainless Steel

Material Notes: Crucible 440A is a hardenable chromium steel which is the toughest of the high chromium cutlery grades. This grade is magnetic at all times.

Information provided by Crucible Specialty Metals.

Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Specific Gravity 7.75 g/cc7.75 g/cc
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 215215
Hardness, Rockwell C 4444tempering temperature-1000°F
 5757as quenched
 5757tempering temperature- 212°F
Tensile Strength, Ultimate 724 MPa105000 psi
Tensile Strength, Yield 414 MPa
@Strain 0.2 %
60000 psi
@Strain 0.2 %
Elongation at Break 20 %20 %in 2"
Reduction of Area 45 %45 %
Modulus of Elasticity 200 GPa29000 ksi
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.00005994 ohm-cm
@Temperature 23.0 °C
0.00005994 ohm-cm
@Temperature 73.4 °F
 
Thermal PropertiesMetricEnglishComments
CTE, linear  10.3 µm/m-°C
@Temperature -17.8 - 93.3 °C
5.70 µin/in-°F
@Temperature 0.000 - 200 °F
 10.8 µm/m-°C
@Temperature -17.8 - 316 °C
6.00 µin/in-°F
@Temperature 0.000 - 600 °F
Specific Heat Capacity 0.460 J/g-°C
@Temperature 0.000 - 100 °C
0.110 BTU/lb-°F
@Temperature 32.0 - 212 °F
Thermal Conductivity 24.2 W/m-K
@Temperature 93.3 °C
168 BTU-in/hr-ft²-°F
@Temperature 200 °F
Melting Point 1370 - 1510 °C2500 - 2750 °F
Solidus 1370 °C2500 °F
Liquidus 1510 °C2750 °F
 
Component Elements PropertiesMetricEnglishComments
Carbon, C 0.60 - 0.75 %0.60 - 0.75 %
Chromium, Cr 16 - 18 %16 - 18 %
Iron, Fe >= 78.43 %>= 78.43 %As Remainder
Manganese, Mn <= 1.0 %<= 1.0 %
Molybdenum, Mo <= 0.75 %<= 0.75 %
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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NCRUC048 / 16041

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