EN 10250-2 Grade C30 normalized and tempered (+NT)

EN 10250-2 Grade C30 normalized and tempered (+NT) introduction

Steel C30 is suitable for parts of higher ductility requirements in vehicle, engine and machine engineering (e.g. bolts, screws, steering knuckles).

Equivalent material: AS S1030, GB 30, GB U20302, IS 3, IS 30C8, JIS S30C, GOST 30, ASTM A521 Grade 1030, SAE 1030, UNS G10300, DIN 1.0528, DIN C30, AFNOR C30, BS C30, BS 30CS, BS 30HS, AISI 1030, JIS S30CM, EN 1.0528, ISO C30, ISO CS30, GB/T 30, GB/T U20302, GB/T ML30

EN 10250-2 Grade C30 normalized and tempered (+NT) general

Property Temperature Value
Density 20.0 °C Density of 7.82 g/cm³

EN 10250-2 Grade C30 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 48 W/(m·K) -
- 100.0 °C Thermal conductivity of 48.9 W/(m·K) -
- 200.0 °C Thermal conductivity of 47.5 W/(m·K) -
- 300.0 °C Thermal conductivity of 44.7 W/(m·K) -
- 400.0 °C Thermal conductivity of 41.6 W/(m·K) -
- 500.0 °C Thermal conductivity of 38.6 W/(m·K) -
- 600.0 °C Thermal conductivity of 35.5 W/(m·K) -
Thermal diffusivity 20.0 °C Thermal diffusivity of 13.3 mm²/s -
- 100.0 °C Thermal diffusivity of 12.6 mm²/s -
- 200.0 °C Thermal diffusivity of 11.5 mm²/s -
- 300.0 °C Thermal diffusivity of 10.2 mm²/s -
- 400.0 °C Thermal diffusivity of 8.9 mm²/s -
- 500.0 °C Thermal diffusivity of 7.5 mm²/s -
- 600.0 °C Thermal diffusivity of 6 mm²/s -

EN 10250-2 Grade C30 normalized and tempered (+NT) chemical

Property Value
Carbon Carbon of 0.27 - 0.34 %
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 0.05 %
Silicon Silicon of 0.4 %
Sulfur Sulfur of 0.045 %

EN 10250-2 Grade C30 normalized and tempered (+NT) electrical

Property Temperature Value
Electrical resistivity 20.0 °C Electrical resistivity of 2.17E-7 Ω·m
- 100.0 °C Electrical resistivity of 2.62E-7 Ω·m
- 200.0 °C Electrical resistivity of 3.32E-7 Ω·m
- 300.0 °C Electrical resistivity of 4.2E-7 Ω·m
- 400.0 °C Electrical resistivity of 5.23E-7 Ω·m
- 500.0 °C Electrical resistivity of 6.41E-7 Ω·m
- 600.0 °C Electrical resistivity of 7.8E-7 Ω·m

EN 10250-2 Grade C30 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 21 % -
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 460 - 480 MPa -
Yield strength 20.0 °C Yield strength of 230 - 250 MPa -

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