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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.
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1.6587 - 18CrNiMo7-6 - 4820

Property Value
EN 1.6587
Short Name 18CrNiMo7-6
AISI 4820
Common Designations BS EN355; BS 822A17; BS 822H17; BS 817M17; 17HNM
Typical Applications Tempering steel / case-hardening steel for highly stressed gears, such as ring gears, drive pinions, gear wheels
Applicable Standards EN ISO 683-17
C 0,15-0,21
Si max. 0,40
Mn 0,50-0,90
P max. 0,025
S max. 0,015
Cr 1,50-1,80
Ni 1,40-1,70
Mo 0,25-0,35
Cu max. 0,30
Al max. 0,050
Analysis Note acc. to EN ISO 683-17
Density [kg/dm³] 7,80
Electrical Resistance at 20°C [Ohm*mm²/m] 0,12
Thermal Conductivity at 20°C [W/m*K] 39,8
Mc Thermal Expansion [10⁻⁶ * K⁻¹] 20-100 °C: 11,5 / 20-400 °C: 13,9
Typical Heat Treatment annealed
Typical Hardness [HBW] max. 229
Typical Tensile Strength [MPa] ≈ 770
Category Automotive
Datasheet (PDF)