EN 10083-3 is a European standard that specifies the technical delivery conditions for alloy steels in the quenched and tempered condition. It is part of the EN 10083 series, which covers various types of steel grades for different applications.
EN 10083-3 specifically focuses on the technical delivery conditions for alloy steels intended for heat treatment after quenching and tempering. These steels are typically used for the manufacture of machine parts, gears, shafts, and other components that require high strength, toughness, and wear resistance.
The standard provides requirements for the chemical composition, mechanical properties, hardness values, and other relevant characteristics of the alloy steels. It also includes guidelines for heat treatment processes such as quenching and tempering.
EN 10083-3 Grade 20MnB5 is a specific grade of alloy steel specified in the EN 10083-3 standard. It falls under the category of quenched and tempered steels and is intended for heat treatment after quenching and tempering.
The designation "20MnB5" indicates the composition and properties of the steel. Here is a breakdown:
"20" refers to the approximate carbon content, which is 0.17-0.23%.
"Mn" represents manganese as an alloying element, typically ranging from 1.15-1.45%.
"B" signifies boron as an additional alloying element, usually present in the range of 0.0008-0.005%.
"5" indicates that it is part of the 5th series of alloy steels in the EN 10083-3 standard.
The Grade 20MnB5 alloy steel is known for its good hardenability, strength, and wear resistance. It is commonly used in applications such as gears, shafts, axles, and other components requiring high surface hardness and toughness.
Boron-alloyed tempering steel for general machine engineering and vehicle manufacturing.The steel is shearable in the non-treated condition.
| Property | Value | Comment |
|---|---|---|
| Density |
7.8 - 7.9 g/cm³
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Typical for Low Carbon Steel |
| Property | Temperature | Value | Condition | Related Standards | Shape | Comment |
|---|---|---|---|---|---|---|
| Elastic modulus |
200 - 215 GPa
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|
Typical for Low Carbon Steel | ||||
| Elongation |
10.2 %
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|
Predicted Value, A200 | ||||
|
11.2 %
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Predicted Value, A80 | |||||
|
12.5 %
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Predicted Value, Transverse | |||||
|
16.6 %
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Predicted Value, A5 | |||||
|
16.8 %
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Predicted Value, A50 | |||||
|
19.1 %
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Predicted Value, A80 Transverse | |||||
| 20 °C |
14 %
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quenched and tempered (+QT) | ISO 683-2, EN 10083-3 | Bar, Forging, Sheet, Strip, Flat | ||
| 20 °C |
15 %
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|
quenched and tempered (+QT) | ISO 683-2, EN 10083-3 | Bar, Forging, Sheet, Strip, Flat | ||
| Hardness, Brinell |
252 [-]
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Predicted Value, Transverse | ||||
| Poisson's ratio |
0.29 [-]
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Typical for Low Carbon Steel | ||||
| Reduction of area |
43.0 %
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Predicted Value, Transverse | ||||
| 20 °C |
55 %
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quenched and tempered (+QT) | ISO 683-2, EN 10083-3 | Bar, Forging, Sheet, Strip, Flat | ||
| Shear modulus |
82 GPa
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|
Typical for Low Carbon Steel | ||||
| Shear strength |
502.3 MPa
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Predicted Value | ||||
| Tensile strength | 20 °C |
750 - 1050 MPa
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quenched and tempered (+QT) | ISO 683-2, EN 10083-3 | Bar, Forging, Sheet, Strip, Flat | |
| 20 °C |
750 - 900 MPa
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quenched and tempered (+QT) | ISO 683-2, EN 10083-3 | Bar, Forging, Sheet, Strip, Flat | ||
| 20 °C |
900 - 1050 MPa
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quenched and tempered (+QT) | ISO 683-2, EN 10083-3 | Bar, Forging, Sheet, Strip, Flat | ||
| 20 °C |
900 MPa
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quenched and tempered (+QT) | ISO 683-2, EN 10083-3 | Bar, Forging, Sheet, Strip, Flat | ||
| Yield strength |
305.9 MPa
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Predicted Value, RP05 | ||||
|
320.1 MPa
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Predicted Value, RP1 | |||||
|
325.6 MPa
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Predicted Value, RP1 Transverse | |||||
|
457.7 MPa
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Predicted Value, RP02 Transverse | |||||
|
466.6 MPa
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Predicted Value, Transverse | |||||
|
640.2 MPa
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Predicted Value, RP02 | |||||
|
709.8 MPa
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Predicted Value, RP002 | |||||
| 20 °C |
600 MPa
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quenched and tempered (+QT) | ISO 683-2, EN 10083-3 | Bar, Forging, Sheet, Strip, Flat | ||
| 20 °C |
700 MPa
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|
quenched and tempered (+QT) | ISO 683-2, EN 10083-3 | Bar, Forging, Sheet, Strip, Flat |
| Property | Value | Comment |
|---|---|---|
| Coefficient of thermal expansion |
1.32e-05 - 1.38e-05 1/K
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Typical for Low Carbon Steel |
| Max service temperature |
328.7 °C
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Predicted Value, Long |
|
500 °C
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Typical for Carbon Steel | |
| Melting point |
1480 - 1526 °C
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Typical for Low Carbon Steel |
| Specific heat capacity |
465 J/(kg·K)
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|
Typical for Low Carbon Steel |
| Thermal conductivity |
25 - 93 W/(m·K)
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|
Typical for Low Carbon Steel |
| Property | Value | Comment |
|---|---|---|
| Electrical conductivity |
7 S/m
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|
Predicted Value |
| Electrical resistivity |
1.43e-07 - 1.74e-07 Ω·m
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Typical for Carbon Steel |
| Property | Value | Comment |
|---|---|---|
| Curie temperature |
770 °C
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|
Typical for Low Carbon Steel |
| Property | Value | Condition | Related Standards | Shape |
|---|---|---|---|---|
| Boron |
0.0008 - 0.005 %
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|
quenched and tempered (+QT) | ISO 683-2, EN 10083-3 | Bar, Forging, Sheet, Strip, Flat |
|
0.001 - 0.005 %
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quenched and tempered (+QT) | EN 10083-3, ISO 683-2 | Bar, Forging, Sheet, Strip, Flat | |
| Carbon |
0.17 - 0.23 %
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|
quenched and tempered (+QT) | ISO 683-2, EN 10083-3 | Bar, Forging, Sheet, Strip, Flat |
| Copper |
0.4 %
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|
quenched and tempered (+QT) | ISO 683-2, EN 10083-3 | Bar, Forging, Sheet, Strip, Flat |
| Manganese |
1.1 - 1.4 %
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|
quenched and tempered (+QT) | ISO 683-2, EN 10083-3 | Bar, Forging, Sheet, Strip, Flat |
| Phosphorus |
0.025 %
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|
quenched and tempered (+QT) | ISO 683-2, EN 10083-3 | Bar, Forging, Sheet, Strip, Flat |
| Silicon |
0.4 %
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|
quenched and tempered (+QT) | ISO 683-2, EN 10083-3 | Bar, Forging, Sheet, Strip, Flat |
| Sulfur |
0.035 %
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|
quenched and tempered (+QT) | ISO 683-2, EN 10083-3 | Bar, Forging, Sheet, Strip, Flat |