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Master Bond adhesives

AISI 8640H Steel, quenched 845°C (1550°F), 540°C (1000°F) temper
Categories: Metal; Ferrous Metal; Alloy Steel; AISI 8000 Series Steel; Low Alloy Steel; Carbon Steel; Medium Carbon Steel
Material Notes: Transition temperature: -79°C (50% brittle)
Key Words: B.S. Type 7, UNS H86400, ASTM A304, SAE J1268, DIN 1.6546, UNI 40 NiCrMo 2 KB, ISO 683-12 10, ISO 683/VIII 1, ISO 683/VIII 1a, ISO 683/VIII 1b, ISO R683-8 1a, ISO R683-8 1b
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Physical PropertiesMetricEnglishComments
Density 7.85 g/cc0.284 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Knoop 381381Converted from Rockwell C hardness.
Hardness, Rockwell C 3838
Hardness, Vickers 368368Converted from Rockwell C hardness.
Modulus of Elasticity 205 GPa29700 ksiTypical for steel
Bulk Modulus 160 GPa23200 ksiTypical for steel.
Poissons Ratio 0.290.29Calculated
Machinability 65 %65 %annealed and cold drawn. Based on AISI 1212 steel = 100%.
Shear Modulus 80.0 GPa11600 ksiTypical for steel
Charpy Impact  15.0 J
@Temperature -185 °C		11.1 ft-lb
@Temperature -301 °F
 20.0 J
@Temperature -130 °C		14.8 ft-lb
@Temperature -202 °F
 33.0 J
@Temperature -73.0 °C		24.3 ft-lb
@Temperature -99.4 °F
 54.0 J
@Temperature -18.0 °C		39.8 ft-lb
@Temperature -0.400 °F
 54.0 J
@Temperature 38.0 °C		39.8 ft-lb
@Temperature 100 °F
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.0000234 ohm-cm0.0000234 ohm-cmTypical steel
 
Thermal PropertiesMetricEnglishComments
Specific Heat Capacity 0.475 J/g-°C0.114 BTU/lb-°FTypical steel
Thermal Conductivity 46.6 W/m-K323 BTU-in/hr-ft²-°FTypical steel
 
Component Elements PropertiesMetricEnglishComments
Carbon, C 0.37 - 0.44 %0.37 - 0.44 %
Chromium, Cr 0.35 - 0.65 %0.35 - 0.65 %
Iron, Fe 96.485 - 97.93 %96.485 - 97.93 %As remainder
Manganese, Mn 0.70 - 1.05 %0.70 - 1.05 %
Molybdenum, Mo 0.15 - 0.25 %0.15 - 0.25 %
Nickel, Ni 0.35 - 0.75 %0.35 - 0.75 %
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.

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M864BB / 8474




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