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Rulon Bearings

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AISI 1118 Steel, normalized at 925°C (1700°F), air cooled, round
Categories: Metal; Ferrous Metal; Carbon Steel; AISI 1000 Series Steel; Low Carbon Steel

Material Notes: Applications include medium duty shafts, studs, pins, distributor cams, cam shafts, and universal joints.

Key Words: NS G11180, ASTM A29, ASTM A107, ASTM A108, FED QQ-S-637 (C1118), SAE J403, SAE J412, SAE J414
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Physical PropertiesOriginal ValueComments
Density 7.87 g/ccTypical for steel.
 
Mechanical PropertiesOriginal ValueComments
Hardness, Brinell 131
@Diameter 102 mm
 137
@Diameter 50.8 mm
 143
@Diameter 25.4 mm
 156
@Diameter 12.7 mm
Hardness, Knoop 150
@Diameter 102 mm
Converted from Brinell
 156
@Diameter 50.8 mm
Converted from Brinell
 163
@Diameter 25.4 mm
Converted from Brinell
 176
@Diameter 12.7 mm
Converted from Brinell
Hardness, Rockwell B 73
@Diameter 102 mm
Converted from Brinell
 75
@Diameter 50.8 mm
Converted from Brinell
 78
@Diameter 25.4 mm
Converted from Brinell
 82
@Diameter 12.7 mm
Converted from Brinell
Hardness, Vickers 136
@Diameter 102 mm
Converted from Brinell
 143
@Diameter 50.8 mm
Converted from Brinell
 149
@Diameter 25.4 mm
Converted from Brinell
 163
@Diameter 12.7 mm
Converted from Brinell
Tensile Strength, Ultimate 457 MPa
@Diameter 102 mm
 472 MPa
@Diameter 50.8 mm
 477 MPa
@Diameter 25.4 mm
 502 MPa
@Diameter 12.7 mm
Tensile Strength, Yield 260 MPa
@Diameter 102 mm
 298 MPa
@Diameter 50.8 mm
 319 MPa
@Diameter 25.4 mm
 330 MPa
@Diameter 12.7 mm
Elongation at Break 33 %
@Diameter 50.8 mm
in 50 mm
 33.3 %
@Diameter 12.7 mm
in 50 mm
 33.5 %
@Diameter 25.4 mm
in 50 mm
 34 %
@Diameter 102 mm
in 50 mm
Reduction of Area 62.8 %
@Diameter 12.7 mm
 65.9 %
@Diameter 25.4 mm
 67.4 %
@Diameter 102 mm
 67.7 %
@Diameter 50.8 mm
Modulus of Elasticity 200 GPaTypical for steel
Bulk Modulus 160 GPaTypical for steel.
Poissons Ratio 0.29Typical For Steel
Shear Modulus 80.0 GPaTypical for steel.
Izod Impact 103 Jnormalized at 925°C (1700°F)
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.0000174 ohm-cmTypical steel
 
Thermal PropertiesOriginal ValueComments
CTE, linear 11.5 µm/m-°C
@Temperature 20.0 °C
Typical steel
 12.2 µm/m-°C
@Temperature 0.000 - 300 °C
Typical for steel
 13.9 µm/m-°C
@Temperature 0.000 - 500 °C
Typical for steel
Specific Heat Capacity 0.472 J/g-°CTypical steel
Thermal Conductivity 51.9 W/m-KTypical steel
 
Component Elements PropertiesOriginal ValueComments
Carbon, C 0.14 - 0.20 %
Iron, Fe 98.03 - 98.48 %As remainder
Manganese, Mn 1.3 - 1.6 %
Phosphorus, P <= 0.040 %
Sulfur, S 0.080 - 0.13 %

References for this datasheet.

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M1118S / 7172

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