EN 10297-1 Grade C45 quenched and tempered (+QT)

Equivalent material: EN C45, DIN 1.0503, DIN GS-C45, AFNOR C45, BS 080M46, UNI C45, SS 1650, UNE F.114, AISI 1045, AISI 1043, SAE 1045, SAE 1043, JIS S45C, JIS S45CM, EN 2C45, EN 1.0503, ISO C45, ISO CS45, GOST 45, GB 45, GB U20452, GB/T 45, GB/T U20452, ASTM Grade 1045, UNS G10430, UNS G10450, IS C45

EN 10297-1 Grade C45 quenched and tempered (+QT) general

Property Temperature Value
Density 20.0 °C Density of 7.8 - 7.85 g/cm³

EN 10297-1 Grade C45 quenched and tempered (+QT) thermal

Property Temperature Value Comment
Coefficient of thermal expansion -100.0 °C Coefficient of thermal expansion of 1.08E-5 1/K -
- 20.0 °C Coefficient of thermal expansion of 1.19E-5 1/K -
- 100.0 °C Coefficient of thermal expansion of 1.11E-5 - 1.25E-5 1/K -
- 200.0 °C Coefficient of thermal expansion of 1.21E-5 - 1.3E-5 1/K -
- 300.0 °C Coefficient of thermal expansion of 1.29E-5 - 1.36E-5 1/K -
- 400.0 °C Coefficient of thermal expansion of 1.35E-5 - 1.41E-5 1/K -
- 500.0 °C Coefficient of thermal expansion of 1.45E-5 1/K -
- 600.0 °C Coefficient of thermal expansion of 1.49E-5 1/K -
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 -100.0 °C Specific heat capacity of 423 J/(kg·K) -
- 20.0 °C Specific heat capacity of 461 - 480 J/(kg·K) -
- 100.0 °C Specific heat capacity of 479 J/(kg·K) -
- 200.0 °C Specific heat capacity of 499 J/(kg·K) -
- 300.0 °C Specific heat capacity of 517 J/(kg·K) -
- 400.0 °C Specific heat capacity of 536 J/(kg·K) -
- 500.0 °C Specific heat capacity of 558 J/(kg·K) -
- 600.0 °C Specific heat capacity of 587 J/(kg·K) -
Thermal conductivity 20.0 °C Thermal conductivity of 41.7 - 52 W/(m·K) -
- 100.0 °C Thermal conductivity of 43.4 - 50.6 W/(m·K) -
- 200.0 °C Thermal conductivity of 43.2 - 48.1 W/(m·K) -
- 300.0 °C Thermal conductivity of 41.4 - 45.7 W/(m·K) -
- 400.0 °C Thermal conductivity of 39.1 W/(m·K) -
- 500.0 °C Thermal conductivity of 36.7 W/(m·K) -
- 600.0 °C Thermal conductivity of 34.1 W/(m·K) -
Thermal diffusivity 20.0 °C Thermal diffusivity of 11.6 mm²/s -
- 100.0 °C Thermal diffusivity of 11.3 mm²/s -
- 200.0 °C Thermal diffusivity of 10.5 mm²/s -
- 300.0 °C Thermal diffusivity of 9.5 mm²/s -
- 400.0 °C Thermal diffusivity of 8.3 mm²/s -
- 500.0 °C Thermal diffusivity of 7.1 mm²/s -
- 600.0 °C Thermal diffusivity of 5.8 mm²/s -

EN 10297-1 Grade C45 quenched and tempered (+QT) chemical

Property Value
Carbon Carbon of 0.42 - 0.5 %
Manganese Manganese of 0.5 - 0.8 %
Phosphorus Phosphorus of 0.05 %
Silicon Silicon of 0.4 %
Sulfur Sulfur of 0.045 %

EN 10297-1 Grade C45 quenched and tempered (+QT) electrical

Property Temperature Value
Electrical resistivity 20.0 °C Electrical resistivity of 1.2E-7 - 2.5E-7 Ω·m
- 100.0 °C Electrical resistivity of 2.95E-7 Ω·m
- 200.0 °C Electrical resistivity of 3.65E-7 Ω·m
- 300.0 °C Electrical resistivity of 4.53E-7 Ω·m
- 400.0 °C Electrical resistivity of 5.56E-7 Ω·m
- 500.0 °C Electrical resistivity of 6.74E-7 Ω·m
- 600.0 °C Electrical resistivity of 8.13E-7 Ω·m

EN 10297-1 Grade C45 quenched and tempered (+QT) mechanical

Property Temperature Value
Elastic modulus -100.0 °C Elastic modulus of 217 GPa
- 20.0 °C Elastic modulus of 210 - 212 GPa
- 100.0 °C Elastic modulus of 205 - 207 GPa
- 200.0 °C Elastic modulus of 195 - 199 GPa
- 300.0 °C Elastic modulus of 185 - 192 GPa
- 400.0 °C Elastic modulus of 175 - 184 GPa
- 500.0 °C Elastic modulus of 173.19 - 175 GPa
- 600.0 °C Elastic modulus of 164 GPa
Elongation 20.0 °C Elongation of 14 - 17 %
Elongation, transverse 20.0 °C Elongation, transverse of 12 - 15 %
Poisson's ratio 20.0 °C Poisson's ratio of 0.28 [-]
- 100.0 °C Poisson's ratio of 0.28 [-]
- 200.0 °C Poisson's ratio of 0.29 [-]
- 300.0 °C Poisson's ratio of 0.29 [-]
- 400.0 °C Poisson's ratio of 0.3 [-]
- 500.0 °C Poisson's ratio of 0.3 [-]
Reduction of area 20.0 °C Reduction of area of 35 - 45 %
Reduction of area, transverse 20.0 °C Reduction of area, transverse of 35 - 45 %
Shear modulus 20.0 °C Shear modulus of 81 - 82.04 GPa
- 100.0 °C Shear modulus of 80.03 GPa
- 200.0 °C Shear modulus of 77.09 GPa
- 300.0 °C Shear modulus of 74.16 GPa
- 400.0 °C Shear modulus of 70.76 GPa
- 500.0 °C Shear modulus of 66.74 GPa
Tensile strength 20.0 °C Tensile strength of 600 - 900 MPa
Tensile strength, transverse 20.0 °C Tensile strength, transverse of 600 - 900 MPa
Yield strength 20.0 °C Yield strength of 340 - 490 MPa
Yield strength, transverse 20.0 °C Yield strength, transverse of 340 - 490 MPa

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