EN 10250-2 Grade C45E normalized and tempered (+NT)

EN 10250-2 Grade C45E normalized and tempered (+NT) introduction

Steel C45 is suitable for mean loaded parts of higher dimensions (large forged parts) and complexer forms in vehicle and machine engineering (e.g. ship shafts, transmission parts, wheel hubs).
As a bright steel product the steel is used in the form of bars, bright, straight, in various conditions (see DIN EN 10277 : 1999-10).

Equivalent material: AS K1045, GB 45, GB U20452, IS 4, IS 45C8, JIS S45C, GOST 45, ASTM A521 Grade 1045, SAE 1045, UNS G10450, DIN Ck45, DIN 1.1191, DIN C45E, DIN GS-Ck45, AFNOR XC45, AFNOR C45E, AFNOR C45RR, AFNOR XC48H1, BS 080M46, BS 080H46, BS CFS8, BS C45E, BS AW2, UNI C45, SS 1672, UNE C45K, AISI 1045, AISI 1045H, SAE 1045H, JIS S45CM, JIS S48C, EN 1.1191, ISO C45E4, ISO C45E, ISO CE45E4, ISO CS45, ISO S48C, GB/T 45, GB/T SM45, GB/T T10450, GB/T U20452, GB/T CRB800H, GB/T 45H, GB/T 45AH, GB/T C33457, GB/T ZGD345-570, ASTM Grade 1045, ASTM 1045, UNS H10450, UNS G10450, UNS G10420

EN 10250-2 Grade C45E normalized and tempered (+NT) general

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

EN 10250-2 Grade C45E normalized and tempered (+NT) 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 1.25E-5 1/K -
- 200.0 °C Coefficient of thermal expansion of 1.3E-5 1/K -
- 300.0 °C Coefficient of thermal expansion of 1.36E-5 1/K -
- 400.0 °C Coefficient of thermal expansion of 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 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 W/(m·K) -
- 100.0 °C Thermal conductivity of 43.4 W/(m·K) -
- 200.0 °C Thermal conductivity of 43.2 W/(m·K) -
- 300.0 °C Thermal conductivity of 41.4 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 10250-2 Grade C45E normalized and tempered (+NT) chemical

Property Value
Carbon Carbon of 0.42 - 0.5 %
Chromium Chromium of 0.4 %
Manganese Manganese of 0.5 - 0.8 %
Molybdenum Molybdenum of 0.1 %
Nickel Nickel of 0.4 %
Phosphorus Phosphorus of 0.04 %
Silicon Silicon of 0.4 %
Sulfur Sulfur of 0.035 %

EN 10250-2 Grade C45E normalized and tempered (+NT) electrical

Property Temperature Value
Electrical resistivity 20.0 °C Electrical resistivity of 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 10250-2 Grade C45E normalized and tempered (+NT) mechanical

Property Temperature Value Comment
Elastic modulus -100.0 °C Elastic modulus of 217 GPa -
- 20.0 °C Elastic modulus of 212 GPa -
- 100.0 °C Elastic modulus of 207 GPa -
- 200.0 °C Elastic modulus of 199 GPa -
- 300.0 °C Elastic modulus of 192 GPa -
- 400.0 °C Elastic modulus of 184 GPa -
- 500.0 °C Elastic modulus of 175 GPa -
- 600.0 °C Elastic modulus of 164 GPa -
Elongation 20.0 °C Elongation of 15 - 16 % -
Elongation, transverse 20.0 °C Elongation, transverse of 11 - 12 % -
Poisson's ratio 23.0 °C Poisson's ratio of 0.29 [-] Typical for Medium Carbon Steel
Shear modulus 23.0 °C Shear modulus of 75 - 80 GPa Typical for Carbon Steel
Tensile strength 20.0 °C Tensile strength of 530 - 580 MPa -
Tensile strength, transverse 20.0 °C Tensile strength, transverse of 530 - 560 MPa -
Yield strength 20.0 °C Yield strength of 230 - 305 MPa -
Yield strength, transverse 20.0 °C Yield strength, transverse of 230 - 275 MPa -

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