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Rulon Bearings

34MoCr4 Alloy Steel
Categories: Metal; Ferrous Metal; Alloy Steel; AISI 4000 Series Steel; Low Alloy Steel
Key Words: EN 10083(91)A1(96) 34MoCr4; DIN 1652(90) 34MoCr4, NMN 253-02 34MoCr4. Comparable to AISI 4137, 4135, 4130, UNS G41370, UNS G41350, UNS G41300
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Physical PropertiesMetricEnglishComments
Density 7.85 g/cc0.284 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Tensile Strength, Ultimate 1100 - 1200 MPa
@Thickness <=16.0 mm		160000 - 174000 psi
@Thickness <=0.630 in		Quenched + Tempered
Tensile Strength, Yield 800 MPa
@Thickness <=16.0 mm		116000 psi
@Thickness <=0.630 in		Quenched + Tempered
Elongation at Break 11 %
@Thickness <=16.0 mm		11 %
@Thickness <=0.630 in		Quenched + Tempered
Modulus of Elasticity 205 GPa29700 ksiTypical for steel
Bulk Modulus 160 GPa23200 ksiTypical for steel
Poissons Ratio 0.290.29Typical for steel
Shear Modulus 80.0 GPa11600 ksiTypical for steel
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.0000223 ohm-cm0.0000223 ohm-cm(AISI 4135)
 
Thermal PropertiesMetricEnglishComments
CTE, linear  11.2 µm/m-°C
@Temperature 0.000 - 100 °C		6.22 µin/in-°F
@Temperature 32.0 - 212 °F		(AISI 4135)
 12.4 µm/m-°C
@Temperature 0.000 - 300 °C		6.89 µin/in-°F
@Temperature 32.0 - 572 °F		(AISI 4135)
 13.5 µm/m-°C
@Temperature 0.000 - 500 °C		7.50 µin/in-°F
@Temperature 32.0 - 932 °F		(AISI 4135)
Specific Heat Capacity 0.477 J/g-°C0.114 BTU/lb-°F(AISI 4135)
Thermal Conductivity 42.7 W/m-K296 BTU-in/hr-ft²-°F(AISI 4135)
 
Component Elements PropertiesMetricEnglishComments
Carbon, C 0.30 - 0.37 %0.30 - 0.37 %
Chromium, Cr 0.90 - 1.2 %0.90 - 1.2 %
Iron, Fe 96.4 - 97.8 %96.4 - 97.8 %As remainder
Manganese, Mn 0.60 - 0.90 %0.60 - 0.90 %
Molybdenum, Mo 0.15 - 0.30 %0.15 - 0.30 %
Phosphorus, P <= 0.035 %<= 0.035 %
Silicon, Si <= 0.40 %<= 0.40 %
Sulfur, S 0.20 - 0.40 %0.20 - 0.40 %per DIN 1652(90). S content < 0.35% per EN 10083(91)A1(96)

References for this datasheet.

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