30CrNiMo8, 1.6580, 16430 – Structural steel

30CrNiMo8, 1.6580, 16430 structural steel with medium hardenability primarily intended for forming. Suitable for heavily loaded components with larger cross-sections, intended for integration into large-scale industrial assemblies. It is characterized by high elasticity and strength, with values exceeding 1560 N/mm². After annealing, it reaches a maximum hardness of 248 HRB. The material 30CrNiMo8, 1.6580, 16430 is highly resistant to variable loads and impacts. It is used in the automotive industry and general engineering for the production of heavily loaded components. In the energy and heating industries, it is often used for the production of components exposed to high temperatures. Examples include shafts, drive axles, engine crankshafts, etc. Other applications include bolts, gears, connecting rods, and others.

Rolled round bars from 20 mm to 300 mm in diameter in stock. Smaller diameters and forged bars available on request.

Properties of 30CrNiMo8, 1.6580, 16430 steel

30CrNiMo8 is known for its high strength, toughness, and excellent resistance to dynamic and impact loads. These properties make it ideal for the production of components that must withstand extreme conditions. The main mechanical properties of this steel include:

• High strength: Due to alloying elements such as chromium, nickel, and molybdenum, this steel provides high yield strength and tensile strength.
• Toughness: 30CrNiMo8 maintains its toughness even at low temperatures, which is crucial for applications in harsh industrial conditions.
• Wear and fatigue resistance: This steel is highly resistant to wear and fatigue fractures, which extends the service life of the manufactured components.
• Good machinability: Although it is strong and tough, 30CrNiMo8 steel is relatively easy to machine and can be easily heat treated.

This material is not suitable for welding.

Chemical composition of 30CrNiMo8, 1.6580, 16430 steel

The chemical composition of 30CrNiMo8 steel plays a key role in achieving its excellent properties. The typical chemical composition of this steel is as follows:

• Carbon (C): 0.26–0.34%
• Silicon (Si): 0.10–0.40%
• Manganese (Mn): 0.50–0.80%
• Chromium (Cr): 1.80–2.20%
• Nickel (Ni): 1.60–2.00%
• Molybdenum (Mo): 0.25–0.35%
• Phosphorus (P): max. 0.025%
• Sulphur (S): max. 0.035%

This composition provides 30CrNiMo8 steel with its characteristic strength, hardness, and corrosion resistance.

Industrial uses of 30CrNiMo8, 1.6580, 16430 steel

Due to its excellent mechanical properties and chemical composition, 30CrNiMo8 steel is widely used in various industries:

Automotive industry

30CrNiMo8 steel is commonly used in the automotive industry for the production of highly stressed components, such as crankshafts, axles, and gears. Its high strength and fatigue resistance ensure a long service life for these components.

Mechanical engineering

In the field of engineering, this steel is used for the production of machine components that must withstand high loads and impacts. These include, for example, heavy shafts, crane wheels, and other critical components.

Energy industry

In the energy sector, 30CrNiMo8 steel is used for the production of turbine blades, bolts, and other components. These components must withstand high temperatures and pressures.

Aerospace industry

Due to its high strength and toughness, this steel is also suitable for the aerospace industry. It is used to manufacture critical aircraft components.

30CrNiMo8 steel, 1.6580, is a highly alloyed steel that offers exceptional mechanical properties and a wide range of applications across various industrial sectors. Its high strength, toughness, and wear resistance make it an ideal choice for the production of highly stressed components. Due to its specific chemical composition and excellent properties, this steel continually proves to be indispensable in modern industry.