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Ensinger PEI

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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 PropertiesOriginal ValueComments
Specific Gravity 7.75 g/cc
 
Mechanical PropertiesOriginal ValueComments
Hardness, Brinell 215
Hardness, Rockwell C 44tempering temperature-1000°F
 57as quenched
 57tempering temperature- 212°F
Tensile Strength, Ultimate 105000 psi
Tensile Strength, Yield 60000 psi
@Strain 0.2 %
Elongation at Break 20 %in 2"
Reduction of Area 45 %
Modulus of Elasticity 29000 ksi
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.00005994 ohm-cm
@Temperature 23.0 °C
 
Thermal PropertiesOriginal ValueComments
CTE, linear 5.70 µin/in-°F
@Temperature -17.8 - 93.3 °C
 6.00 µin/in-°F
@Temperature -17.8 - 316 °C
Specific Heat Capacity 0.110 BTU/lb-°F
@Temperature 0.000 - 100 °C
Thermal Conductivity 168 BTU-in/hr-ft²-°F
@Temperature 93.3 °C
Melting Point 2500 - 2750 °F
Solidus 2500 °F
Liquidus 2750 °F
 
Component Elements PropertiesOriginal ValueComments
Carbon, C 0.60 - 0.75 %
Chromium, Cr 16 - 18 %
Iron, Fe >= 78.43 %As Remainder
Manganese, Mn <= 1.0 %
Molybdenum, Mo <= 0.75 %
Phosphorus, P <= 0.040 %
Silicon, Si <= 1.0 %
Sulfur, S <= 0.030 %

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NCRUC048 / 16041

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