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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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1.3974 - X2CrNiMnMoNNb23-17-6-3 - F49 - S33228

Property Value
EN 1.3974
Short Name X2CrNiMnMoNNb23-17-6-3
AISI F49
UNS S33228
Common Designations Submarine steel
Typical Applications Non-magnetic special steel for shipbuilding, electrical engineering and mechanical engineering
Applicable Standards SEW 390
C max. 0,03
Si max. 1,00
Mn 4,50-6,50
P max. 0,025
S max. 0,010
Cr 21,00-24,50
Ni 15,50-18,00
Mo 2,80-3,40
N 0,30-0,50
Nb 0,10-0,30
W 0,10-0,30
Analysis Note acc. to SEL
Density [kg/dm³] 7,90
Electrical Resistance at 20°C [Ohm*mm²/m] 0,70
Thermal Conductivity at 20°C [W/m*K] 13,5
Mc Thermal Expansion [10⁻⁶ * K⁻¹] 20-100 °C: 15,5 / 20-400 °C: 17,3
Typical Heat Treatment solution annealed
Typical Hardness [HBW] max. 341
Typical Tensile Strength [MPa] 800-1050
Category Aerospace
Chemical industry
Defence
Medical technology
Hydrogen applications
Datasheet (PDF)