TAGS: EN 10083-1 | steel grade | 34CrMo4 | alloy steel |
EN 10083-1 is a European standard that specifies the technical delivery conditions for non-alloy and alloy steels for quenching and tempering. It covers a wide range of steel grades used in various applications.
EN 10083-1 focuses on the general technical delivery conditions for steels intended for heat treatment after quenching and tempering. It provides requirements for chemical composition, mechanical properties, hardness values, and other relevant characteristics of the steels.
EN 10083-1 defines different types of steel classifications, including non-alloy steels and alloy steels with varying compositions and properties. It also includes guidelines for heat treatment processes like quenching and tempering, which are crucial for achieving the desired mechanical properties in the final product.
EN 10083-1 ensures that the delivered steels meet specific quality standards and can be processed and used effectively in applications requiring high strength, toughness, and wear resistance.
Manufacturers and users of steel products refer to this standard to ensure compliance with the specified technical requirements and to guarantee the consistent quality of the produced materials.
EN 10083-1 Grade 34CrMo4 is a specific grade of steel specified in the EN 10083-1 standard. This grade falls under the category of alloy special steels for quenching and tempering.
Grade 34CrMo4 is characterized by the following composition:
Approximate carbon content: 0.30-0.37%
Chromium (Cr): 0.90-1.20%
Molybdenum (Mo): 0.15-0.30%
EN 10083-1 Grade 34CrMo4 alloy steel grade exhibits good hardenability, high strength, and excellent toughness. It is commonly used in the manufacturing of components that require exceptional mechanical properties after the quenching and tempering process. Applications include gears, shafts, piston rods, and other heavily loaded parts.
EN 10083-1 stipulates the technical delivery conditions for Grade 34CrMo4, including requirements for chemical composition, mechanical properties, hardness values, and other relevant characteristics. The standard ensures consistent quality and enables proper processing and utilization of the steel in various industries.
Steel 34CrMo4 is suitable for parts with high strength and toughness requirements at mean and higher heat-treatment sections (also large forged parts) in vehicle manufacturing, engine and machine engineering (e.g. shafts, gear wheels, steering knuckles). The steel shows high resistivity to static and dynamic loading. Lowest working temperature -20 °C.
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Property
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Temperature
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Value
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Density
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20.0 °C
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7.81 - 7.85 g/cm³
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Property
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Temperature
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Value
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Elastic modulus
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-100.0 °C
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217 GPa
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20.0 °C
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210 - 212 GPa
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100.0 °C
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205 - 207 GPa
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200.0 °C
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195 - 199 GPa
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300.0 °C
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185 - 192 GPa
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400.0 °C
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182.31 - 184 GPa
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500.0 °C
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171.64 - 175 GPa
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600.0 °C
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164 GPa
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Elongation
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20.0 °C
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11 - 15 %
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Poisson's ratio
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20.0 °C
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0.28 [-]
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100.0 °C
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0.29 [-]
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200.0 °C
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0.3 [-]
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300.0 °C
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0.3 [-]
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400.0 °C
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0.3 [-]
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500.0 °C
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0.31 [-]
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Reduction of area
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20.0 °C
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45 - 60 %
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Shear modulus
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20.0 °C
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81 - 81.88 GPa
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100.0 °C
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79.57 GPa
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200.0 °C
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76.63 GPa
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300.0 °C
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73.54 GPa
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400.0 °C
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69.99 GPa
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500.0 °C
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65.66 GPa
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Tensile strength
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20.0 °C
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700 - 1200 MPa
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Yield strength
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20.0 °C
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450 - 800 MPa
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Property
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Temperature
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Value
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Comment
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Coefficient of thermal expansion
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-100.0 °C
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1.05E-5 1/K
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20.0 °C
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1.15E-5 1/K
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100.0 °C
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1.11E-5 - 1.21E-5 1/K
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200.0 °C
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1.21E-5 - 1.27E-5 1/K
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300.0 °C
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1.29E-5 - 1.32E-5 1/K
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400.0 °C
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1.35E-5 - 1.36E-5 1/K
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500.0 °C
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1.4E-5 1/K
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600.0 °C
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1.44E-5 1/K
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Max service temperature, long
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-20 - 0 °C
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Melting point
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1382 - 1529 °C
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Typical for Chromium Molybdenum Steel
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Specific heat capacity
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-100.0 °C
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423 J/(kg·K)
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20.0 °C
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460 - 461 J/(kg·K)
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100.0 °C
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479 J/(kg·K)
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200.0 °C
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499 J/(kg·K)
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300.0 °C
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517 J/(kg·K)
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400.0 °C
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536 J/(kg·K)
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500.0 °C
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558 J/(kg·K)
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600.0 °C
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587 J/(kg·K)
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Thermal conductivity
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20.0 °C
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39.6 - 42 W/(m·K)
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100.0 °C
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41.6 W/(m·K)
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200.0 °C
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41.8 W/(m·K)
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300.0 °C
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40.3 W/(m·K)
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400.0 °C
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38.2 W/(m·K)
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500.0 °C
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36 W/(m·K)
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600.0 °C
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33.6 W/(m·K)
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Thermal diffusivity
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20.0 °C
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11 mm²/s
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100.0 °C
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10.8 mm²/s
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200.0 °C
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10.1 mm²/s
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300.0 °C
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9.2 mm²/s
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400.0 °C
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8.1 mm²/s
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500.0 °C
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7 mm²/s
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600.0 °C
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5.7 mm²/s
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Property
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Temperature
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Value
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Electrical resistivity
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20.0 °C
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1.8E-7 - 2.63E-7 Ω·m
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100.0 °C
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3.08E-7 Ω·m
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200.0 °C
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3.78E-7 Ω·m
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300.0 °C
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4.66E-7 Ω·m
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400.0 °C
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5.69E-7 Ω·m
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500.0 °C
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6.87E-7 Ω·m
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600.0 °C
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8.26E-7 Ω·m
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Property
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Value
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|---|---|
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Carbon
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0.3 - 0.37 %
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Chromium
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0.9 - 1.2 %
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Copper
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0.4 %
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Manganese
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0.6 - 0.9 %
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Molybdenum
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0.15 - 0.3 %
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Phosphorus
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0.03 - 0.04 %
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Silicon
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0.1 - 0.4 %
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Sulfur
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0.035 %
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