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    AISI 4140 Steel, Normalized at 870°C (1600°F), Air Cooled, 25 MM (1 In.) Round

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    Giancarlo Passalacqua
    This document provides information on the material properties of AISI 4140 steel that has been normalized at 870°C (1600°F) and air cooled. It lists the chemical composition, physical properties, mechanical properties, electrical properties, thermal properties, and references for AISI 4140 steel in this condition. The document contains detailed data on metrics like density, hardness, tensile strength, modulus of elasticity, electrical resistivity, thermal conductivity, specific heat capacity, and chemical elements.

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    AISI 4140 Steel, Normalized at 870°C (1600°F), Air Cooled, 25 MM (1 In.) Round

    Uploaded by

    Giancarlo Passalacqua
    12 views2 pages
    This document provides information on the material properties of AISI 4140 steel that has been normalized at 870°C (1600°F) and air cooled. It lists the chemical composition, physical properties, mechanical properties, electrical properties, thermal properties, and references for AISI 4140 steel in this condition. The document contains detailed data on metrics like density, hardness, tensile strength, modulus of elasticity, electrical resistivity, thermal conductivity, specific heat capacity, and chemical elements.

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    AISI 4140 Steel, normalized at 870°C (1600°F), air cooled, 25 mm (1 in.) round

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    This document provides information on the material properties of AISI 4140 steel that has been normalized at 870°C (1600°F) and air cooled. It lists the chemical composition, physical properties, mechanical properties, electrical properties, thermal properties, and references for AISI 4140 steel in this condition. The document contains detailed data on metrics like density, hardness, tensile strength, modulus of elasticity, electrical resistivity, thermal conductivity, specific heat capacity, and chemical elements.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    12 views2 pages

    AISI 4140 Steel, Normalized at 870°C (1600°F), Air Cooled, 25 MM (1 In.) Round

    Uploaded by

    Giancarlo Passalacqua
    This document provides information on the material properties of AISI 4140 steel that has been normalized at 870°C (1600°F) and air cooled. It lists the chemical composition, physical properties, mechanical properties, electrical properties, thermal properties, and references for AISI 4140 steel in this condition. The document contains detailed data on metrics like density, hardness, tensile strength, modulus of elasticity, electrical resistivity, thermal conductivity, specific heat capacity, and chemical elements.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 2

    9/11/23, 14:31 AISI 4140 Steel, normalized at 870°C (1600°F), air cooled, 25 mm (1 in.

    ) round

    AISI 4140 Steel, normalized at 870°C (1600°F), air cooled, 25 mm (1 in.) round
    Categories: Metal; Ferrous Metal; Alloy Steel; AISI 4000 Series Steel; Low Alloy Steel; Carbon Steel; Medium
    Carbon Steel

    Material Normalized: heated to 815°C, air cooled. Medium-carbon steel with high hardenability and good fatigue,
    Notes: abrasion and impact resistance.

    Key Words: AFNOR 40 CD 4, AFNOR 42 CD 4 (France), ASTM A322, ASTM A331, ASTM A505, ASTM A519,
    ASTM A646, B.S. 708 A 42 (UK), B.S. 708 M 40 (UK), B.S. 709 M 40 (UK), JIS SCM 4 H, JIS SCM 4,
    JIS SCM440, SS14 2244 (Sweden), MIL SPEC MIL-S-16974, SAE J404, SAE J412, SAE J770, DIN
    1.7225, UNS G41400, AMS 6381, AMS 6382, AMS 6390, AMS 6395, IS 1570 40Cr1Mo28, IS 4367
    40Cr1Mo28, IS 5517 40Cr1Mo28
    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 Metric English Comments


    Properties
    Density 7.85 g/cc 0.284 lb/in³

    Mechanical Metric English Comments


    Properties
    Hardness, Brinell 302 302
    Hardness, Knoop 328 328 Converted from Brinell
    Hardness, Rockwell 99 99 Converted from Brinell
    B
    Hardness, Rockwell 32 32 Converted from Brinell
    C
    Hardness, Vickers 319 319 Converted from Brinell
    Tensile Strength, 1020 MPa 148000 psi
    Ultimate
    Tensile Strength, 655 MPa 95000 psi
    Yield
    Elongation at Break 17.7 % 17.7 % in 50 mm
    Reduction of Area 46.8 % 46.8 %
    Modulus of 205 GPa 29700 ksi Typical for steel
    Elasticity
    Bulk Modulus 160 GPa 23200 ksi Typical for steel
    Poissons Ratio 0.29 0.29 Calculated
    Machinability 65 % 65 % Based on AISI 1212 as 100% machinability.
    Shear Modulus 80.0 GPa 11600 ksi Typical for steel

    Electrical Metric English Comments


    Properties
    Electrical Resistivity 0.0000220 ohm-cm 0.0000220 ohm-cm specimen hardened and tempered
    @Temperature 20.0 °C @Temperature 68.0 °F

    0.0000263 ohm-cm 0.0000263 ohm-cm specimen hardened and tempered


    @Temperature 100 °C @Temperature 212 °F
    0.0000326 ohm-cm 0.0000326 ohm-cm specimen hardened and tempered
    @Temperature 200 °C @Temperature 392 °F
    0.0000475 ohm-cm 0.0000475 ohm-cm specimen hardened and tempered
    @Temperature 400 °C @Temperature 752 °F
    0.0000646 ohm-cm 0.0000646 ohm-cm specimen hardened and tempered
    @Temperature 600 °C @Temperature 1110 °F

    Thermal Properties Metric English Comments


    CTE, linear 12.2 µm/m-°C 6.78 µin/in-°F
    @Temperature 0.000 - 100 °C @Temperature 32.0 - 212 °F
    13.7 µm/m-°C 7.61 µin/in-°F
    @Temperature 20.0 - 400 °C @Temperature 68.0 - 752 °F
    14.6 µm/m-°C 8.11 µin/in-°F
    @Temperature 20.0 - 600 °C @Temperature 68.0 - 1110 °F

    https://www.matweb.com/search/datasheet_print.aspx?matguid=8b43d8b59e4140b88ef666336ba7371a 1/2
    9/11/23, 14:31 AISI 4140 Steel, normalized at 870°C (1600°F), air cooled, 25 mm (1 in.) round

    Specific Heat 0.473 J/g-°C 0.113 BTU/lb-°F


    Capacity @Temperature 150 - 200 °C @Temperature 302 - 392 °F

    0.519 J/g-°C 0.124 BTU/lb-°F


    @Temperature 350 - 400 °C @Temperature 662 - 752 °F
    0.561 J/g-°C 0.134 BTU/lb-°F
    @Temperature 550 - 600 °C @Temperature 1020 - 1110 °F
    Thermal 33.0 W/m-K 229 BTU-in/hr-ft²-°F
    Conductivity @Temperature 600 °C @Temperature 1110 °F

    37.7 W/m-K 262 BTU-in/hr-ft²-°F


    @Temperature 400 °C @Temperature 752 °F
    42.2 W/m-K 293 BTU-in/hr-ft²-°F
    @Temperature 200 °C @Temperature 392 °F
    42.6 W/m-K 296 BTU-in/hr-ft²-°F
    @Temperature 100 °C @Temperature 212 °F

    Component Metric English Comments


    Elements
    Properties
    Carbon, C 0.38 - 0.43 % 0.38 - 0.43 %
    Chromium, Cr 0.80 - 1.1 % 0.80 - 1.1 %
    Iron, Fe 96.785 - 97.77 % 96.785 - 97.77 % As remainder
    Manganese, Mn 0.75 - 1.0 % 0.75 - 1.0 %
    Molybdenum, Mo 0.15 - 0.25 % 0.15 - 0.25 %
    Phosphorus, P <= 0.035 % <= 0.035 %
    Silicon, Si 0.15 - 0.30 % 0.15 - 0.30 %
    Sulfur, S <= 0.040 % <= 0.040 %

    References for this datasheet.

    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.

    https://www.matweb.com/search/datasheet_print.aspx?matguid=8b43d8b59e4140b88ef666336ba7371a 2/2

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