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Alloy steel SAE 5140

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SAE 5140
Chemical composition: C=0.40%, Mn=0.8%, Cr=0.8%
Property Value in metric unit Value in US unit
Density 7.872 *10³ kg/m³ 491.4 lb/ft³
Modulus of elasticity 205 GPa 29700 ksi
Thermal expansion (20 ºC) 12.6*10-6 ºCˉ¹ 7.00*10-6 in/(in* ºF)
Specific heat capacity 452 J/(kg*K) 0.108 BTU/(lb*ºF)
Thermal conductivity 44.7 W/(m*K) 310 BTU*in/(hr*ft²*ºF)
Electric resistivity 2.28*10-7 Ohm*m 2.28*10-5 Ohm*cm
Tensile strength (annealed) 572 MPa 83000 psi
Yield strength (annealed) 293 MPa 42500 psi
Elongation (annealed) 29 % 29 %
Hardness (annealed) 85 RB 85 RB
Tensile strength (normalized) 793 MPa 115000 psi
Yield strength (normalized) 472 MPa 68500 psi
Elongation (normalized) 23 % 23 %
Hardness (normalized) 98 RB 98 RB

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alloy_steel_sae_5140.txt · Last modified: 2023/12/13 by dmitri_kopeliovich
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