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Notes on use (click to expand)

Notes on use (click to expand)

There are more than 2,500 standardized types of steel worldwide, which differ in their composition, manufacturing and post-treatment processes and therefore also in their intended use. Almost 400 of these materials are also produced in our rolling mills. Finding your way around often costs time and nerves.
Our material database should save you time and nerves and make the material search easier.
If you already know the required material, simply use our search function. For example, search for the short name, EN, AISI or UNS. Under Details you will also find the detailed data sheet, which is also available for download.
Further information on using the material database can be found here.

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1.7149 - 20MnCrS5 - 5120H

Property Value
EN 1.7149
Short Name 20MnCrS5
AISI 5120H
Common Designations AFNOR 20MC5; 20HG
Typical Applications Case-hardened steel for mechanical engineering, such as gear parts, gear wheels, construction elements
Applicable Standards EN ISO 683-3; EN 10263-3; EN 10277
C 0,17-0,22
Si 0,15-0,40
Mn 1,10-1,40
P max. 0,025
S 0,020-0,040
Cr 1,00-1,30
Cu max. 0,40
Analysis Note acc. to EN ISO 683-3
Density [kg/dm³] 7,75
Electrical Resistance at 20°C [Ohm*mm²/m] 0,12
Thermal Conductivity at 20°C [W/m*K] 42,0
Mc Thermal Expansion [10⁻⁶ * K⁻¹] 20-100 °C: 11,5 / 20-400 °C: 13,9
Category Automotive
Datasheet (PDF)