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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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1.7218 - 25CrMo4 - 4130H - H41300

Property Value
EN 1.7218
Short Name 25CrMo4
AISI 4130H
4130 RH
UNS H41300
Common Designations SS7218; AFNOR 25 CD4; BS970 708A25; 708M25; 25HM
Typical Applications Tempered steel for automotive construction, such as screws and safety parts
Applicable Standards EN ISO 683-2; EN 10132-3; EN 10250-3; EN 10263-4; EN 10269; EN 10305-1; EN 10277
C 0,22-0,29
Si 0,10-0,40
Mn 0,60-0,90
P max. 0,025
S max. 0,035
Cr 0,90-1,20
Mo 0,15-0,30
Cu max. 0,40
Analysis Note acc. to EN ISO 683-2
Density [kg/dm³] 7,75
Electrical Resistance at 20°C [Ohm*mm²/m] 0,19
Thermal Conductivity at 20°C [W/m*K] 49,0
Typical Heat Treatment hardened and tempered
Typical Hardness [HBW] max. 240
Typical Tensile Strength [MPa] ≈ 810
Category Automotive
Aerospace
Energy technology
Datasheet (PDF)