Alloy steels
EU

35NC6 - 1.5815 - 36NiCr6

US
Alloy steel with good mechanical properties after heat treatment. It also offers good ductility, fatigue strength and shock resistance. Example applications include: medium-weight mechanical parts for the aeronautical industry (shafts, gears, etc.); aeronautical screws and bolts.

36NiCr6 - 1.5815 steel - Available from stock

The steel known as 35NC6, 36NiCr6 or by the ENEuropean standard 1.5815 is an alloy steel used for mechanical engineering. The name 36NiCr6 refers to its specific chemical composition, withnickel (Ni) and chromium (Cr) being its main alloying elements.

Below, you’llfind a technical breakdown of this steel, its different names and what cangenerally be expected from it in terms of composition and properties:

  • Europe: 35NC6 | 1.5815 | 36NiCr6
  • Europe: EN 10083-3 | EN 2438 | EN 10250
  • Strength & hardness: the added nickel and chromium combined with appropriate heat treatment allows for a good combination of tensile strength, hardness and tenacity.
  • Good hardenability: allows the steel to achieve uniform mechanical properties, even on thicker diameters.
  • Corrosion resistance: although not as corrosion-resistant as stainless steels, chromium offers a certain amount of protection against oxidation.

Heat treatment (quenching and tempering, for example) is crucial for achieving the desired mechanical properties. The temperature and duration of heat treatment must be carefully monitored in order to optimise the steel’s microstructure and thus its properties.

Properties
  • Strength & hardness: the added nickel and chromium combined with appropriate heat treatment allows for a good combination of tensile strength, hardness and tenacity.
  • Good hardenability: allows the steel to achieve uniform mechanical properties, even on thicker diameters.
  • Corrosion resistance: although not as corrosion-resistant as stainless steels, chromium offers a certain amount of protection against oxidation.

Standards and Designations
Heat treatment

Heat treatment (quenching and tempering, for example) is crucial for achieving the desired mechanical properties. The temperature and duration of heat treatment must be carefully monitored in order to optimise the steel’s microstructure and thus its properties.

Special advantages
Conclusion
Application

Steels like the 35NC6 (AKA 36NiCr6or 1.5815) are typically used in applications that require good mechanical properties and fatigue strength, such as:  

  • Machine parts and mechanical components under heavy loads
  • Shafts, gears and sprockets
  • Automotive and aerospace components requiring good mechanical and fatigue strength
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