EN 10083-3 Grade 38MnB5 quenched and tempered (+QT)

EN 10083-3 Grade 38MnB5 quenched and tempered (+QT) introduction

Boron-alloyed tempering steel for general machine engineering.
The steel is shearable in the non treated condition.

Equivalent material: GB 40MnBH, GB 40MnBAH, GB A71405, GB A71407, ISO 39MnB5, GOST 40GR, GOST 40ГP, DIN 1.5532, DIN 38MnB5, JIS SWRCHB737, EN 1.5532, ISO 38MnB5

EN 10083-3 Grade 38MnB5 quenched and tempered (+QT) general

Property Temperature Value Comment
Density 23.0 °C Density of 7.8 - 7.9 g/cm³ Typical for Medium Carbon Steel

EN 10083-3 Grade 38MnB5 quenched and tempered (+QT) thermal

Property Temperature Value Comment
Coefficient of thermal expansion 23.0 °C Coefficient of thermal expansion of 1.32E-5 1/K Typical for Medium Carbon Steel
Max service temperature - Max service temperature of 500 °C Typical for Carbon Steel
Melting point - Melting point of 1380 - 1514 °C Typical for Medium Carbon Steel
Specific heat capacity 23.0 °C Specific heat capacity of 470 - 520 J/(kg·K) Typical for Medium Carbon Steel
Thermal conductivity 23.0 °C Thermal conductivity of 21 - 52 W/(m·K) Typical for Medium Carbon Steel

EN 10083-3 Grade 38MnB5 quenched and tempered (+QT) chemical

Property Value
Boron Boron of 1E-3 - 5E-3 %
Carbon Carbon of 0.36 - 0.42 %
Manganese Manganese of 1.15 - 1.45 %
Phosphorus Phosphorus of 0.03 %
Silicon Silicon of 0.4 %
Sulfur Sulfur of 0.035 %

EN 10083-3 Grade 38MnB5 quenched and tempered (+QT) electrical

Property Temperature Value Comment
Electrical resistivity 23.0 °C Electrical resistivity of 1.43E-7 - 1.74E-7 Ω·m Typical for Carbon Steel

EN 10083-3 Grade 38MnB5 quenched and tempered (+QT) mechanical

Property Temperature Value Comment
Elastic modulus 23.0 °C Elastic modulus of 200 - 215 GPa Typical for Medium Carbon Steel
Elongation 20.0 °C Elongation of 12 % -
Poisson's ratio 23.0 °C Poisson's ratio of 0.29 [-] Typical for Medium Carbon Steel
Reduction of area 20.0 °C Reduction of area of 50 % -
Shear modulus 23.0 °C Shear modulus of 75 - 80 GPa Typical for Carbon Steel
Tensile strength 20.0 °C Tensile strength of 850 - 1250 MPa -
Yield strength 20.0 °C Yield strength of 700 - 900 MPa -

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