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Master Bond adhesives

AISI 8740 Steel, normalized 870°C (1600°F), 13 mm (0.5 in.) round
Categories: Metal; Ferrous Metal; Alloy Steel; AISI 8000 Series Steel; Low Alloy Steel; Carbon Steel; Medium Carbon Steel
Material Notes: Normalized at 870°C, air cooled, 13 mm round
Key Words: DIN 1.6546, UNI 40 NiCrMo 2 KB, B.S. Type 7, ASTM A331, ASTM A505, ASTM A519, MIL-SPEC MIL-S-6049, SAE J404, SAE J412, SAE J770, UNS G87400, AMS 6322, AMS 6323, AMS 6325, AMS 6327, AMS 6358, ASTM A322
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Physical PropertiesMetricEnglishComments
Density 7.85 g/cc0.284 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 269269
Hardness, Knoop 294294Converted from Brinell
Hardness, Rockwell B 9999Converted from Brinell
Hardness, Rockwell C 2727Converted from Brinell
Hardness, Vickers 284284Converted from Brinell
Tensile Strength, Ultimate 938 MPa136000 psi
Tensile Strength, Yield 620 MPa89900 psi
Elongation at Break 16 %16 %in 50 mm
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 100% machinability for AISI 1212 steel.
Shear Modulus 80.0 GPa11600 ksiTypical for steel
 
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 0.38 - 0.43 %0.38 - 0.43 %
Chromium, Cr 0.40 - 0.60 %0.40 - 0.60 %
Iron, Fe 96.595 - 97.72 %96.595 - 97.72 %As remainder
Manganese, Mn 0.75 - 1.0 %0.75 - 1.0 %
Molybdenum, Mo 0.20 - 0.30 %0.20 - 0.30 %
Nickel, Ni 0.40 - 0.70 %0.40 - 0.70 %
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.

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AISI 8740 Steel, annealed 815°C (1500°F)
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AISI 8740 Steel, oil quenched 830°C (1525°F), 540°C (1000°F) temper, 13 mm (0.5 in.) round
AISI 8740 Steel, oil quenched 830°C (1525°F), 595°C (1100°F) temper, 13 mm (0.5 in.) round
AISI 8740 Steel, annealed 815°C (1500°F), 25 mm (1 in.) round

M874AD / 8577




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