31CrMoV9, 30CrMoV9, 1.7707, 1.8519, 15 330 – Nitriding steel

Grade 31CrMoV9, 1.8519 steel, or 15330 according to the Czech ČSN EN standard, is a nitriding steel that finds application in various industrial sectors.

Round bars of grade 31CrMoV9, 1.8519 steel from 20 mm to 300 mm in diameter in stock, other sizes available on request.

Key properties of 31CrMoV9, 1.8519 steel

Grade 31CrMoV9 steel is a highly alloyed steel known for its excellent mechanical properties and high wear resistance.

• High strength: 31CrMoV9 steel achieves high strength values, making it an ideal material for applications where high resistance to mechanical stress is required.
• Hardness: Due to its chemical composition, this steel has high hardness, which ensures long service life and wear resistance.
• Heat resistance: 31CrMoV9 steel retains its mechanical properties even at high temperatures, making it suitable for use in high-temperature environments.
• Resistance to corrosion: By adding alloying elements, this steel is also resistant to corrosion, which increases its service life in demanding conditions.

Chemical composition of 31CrMoV9, 1.8519 steel

A key aspect of this steel is its chemical composition, which is carefully designed to provide the desired properties. The main components include:

• Carbon (C): 0.28–0.33%
• Chromium (Cr): 2.20–2.50%
• Molybdenum (Mo): 0.15–0.25%
• Vanadium (V): 0.22–0.30%
• Silicon (Si): 0.10–0.40%
• Manganese (Mn): 0.60–0.90%
• Phosphorus (P): max. 0.025%
• Sulphur (S): max. 0.035%

This composition ensures that the steel has high strength, hardness, and resistance to high temperatures and corrosion.

Main areas of application of 31CrMoV9, 1.8519 steel

Grade 31CrMoV9 steel finds wide application in various industrial sectors due to its excellent properties.

Automotive industry

This steel is commonly used for the production of engine components, such as crankshafts, camshafts, and other parts. These components must withstand high stress and temperatures.

Aerospace industry

Due to its strength and wear resistance, this steel is also used in the production of aircraft components. Examples include shafts, gears and other critical parts. These components are essential for the proper functioning of the aircraft.

Energy industry

In the energy industry, 31CrMoV9 steel is used in the production of turbine blades and other components. These components must withstand high temperatures and mechanical stress.

Mechanical engineering

This steel is widely used in engineering for the production of tools and machine components. These components require high strength and wear resistance.

Grade 31CrMoV9 (1.8519, ČSN 15 330) steel is a high-quality alloyed material that offers excellent mechanical properties. These include heat resistance and corrosion resistance. Due to these properties, it finds wide application in various industries, including the automotive, aerospace, energy, and engineering industries.

The said 31CrMoV9, 1.8519 material is directly comparable to the highly hardenable, nitriding 30CrMoV9, 1.7707 steel. After nitriding, a surface hardness of up to 800 HV can be achieved, hence it is a possible equivalent.