30CrMoV9 / 1.7707 Alloy Steel

Steel Round Bar 1.7709 / 30CrMoV9: Specifications, Applications, and Features

Steel round bar 1.7709 (30CrMoV9) is a high-quality alloyed material widely used for manufacturing components that operate under high loads and elevated temperatures. Due to its excellent mechanical properties, wear resistance, and heat treatment capabilities, this alloy is applied in mechanical engineering, energy, and other industries. Below are its key characteristics, chemical composition, mechanical properties, applications, and features.

General Specifications

Steel round bar 1.7709 / 30CrMoV9 belongs to the group of alloyed structural steels with high strength and ductility. Key characteristics include:

• Steel grade: 1.7709 (EN), 30CrMoV9 (European standard).
• Form of supply: Round bar with diameters ranging from 10 mm to 300 mm.
• Type of processing: Hot-rolled, calibrated, or polished.
• Heat treatment methods: Quenching, tempering, normalization.
• Corrosion resistance: Moderate, can be enhanced with additional treatments.

Round bars made of steel 1.7709 are ideal for responsible structures requiring a combination of strength, reliability, and resistance to mechanical loads.

Chemical Composition

The balanced chemical composition of steel 1.7709 / 30CrMoV9 ensures its unique operational properties:

• Carbon (C): 0.28–0.34%
• Chromium (Cr): 2.20–2.50%
• Molybdenum (Mo): 0.20–0.30%
• Vanadium (V): 0.08–0.12%
• Manganese (Mn): 0.40–0.70%
• Silicon (Si): 0.20–0.40%
• Phosphorus (P): ≤ 0.025%
• Sulfur (S): ≤ 0.035%

The addition of chromium and molybdenum enhances strength and thermal stability, while vanadium improves wear resistance and increases the service life of components.

Mechanical Properties

After heat treatment, steel 1.7709 demonstrates the following mechanical properties:

• Tensile strength (σv): 850–1100 MPa.
• Yield strength (σ0.2): 700–850 MPa.
• Hardness (HB): Up to 250 (as delivered), increases after quenching.
• Elongation at break: 10–14%.
• Impact toughness: High resistance to dynamic and impact loads.

These characteristics make the material ideal for use in components subjected to intensive mechanical impacts.

Applications

Steel round bar 1.7709 / 30CrMoV9 is widely used in the following sectors:

1. Mechanical Engineering.
   Used for manufacturing gears, shafts, spindles, levers, and other parts subjected to high loads.
2. Energy Sector.
   Applied for producing turbine components, heat exchangers, and boiler equipment operating at high temperatures.
3. Automotive Industry.
   Used for manufacturing transmission parts, drive shafts, and heavy-duty suspension components.
4. Shipbuilding.
   Applied for manufacturing engine parts that operate in high humidity and saline water conditions.
5. Tool Manufacturing.
   Used for producing dies, molds, and cutting tools.

This material is ideal for long-term operation under constant loads and high-temperature conditions.

Features of Steel 1.7709

The round bar made of steel 1.7709 / 30CrMoV9 has the following key features:

• High strength and hardness.
  The material retains mechanical properties even under the influence of high temperatures and significant loads.
• Wear resistance.
  Due to the presence of vanadium and molybdenum, the alloy demonstrates high resistance to abrasive wear.
• Good machinability.
  The steel is easy to process through thermal and mechanical methods, including cutting, drilling, and welding.
• Durability.
  Resistance to thermal deformations ensures a long service life for components.
• Wide range of applications.
  Suitable for use under high loads, temperature fluctuations, and dynamic impacts.

Advantages of Buying from Us

We offer a wide range of steel round bars 1.7709 / 30CrMoV9 in various diameters and processing types. Our advantages include:

• High-quality products.
  All products comply with international standards.
• Competitive prices.
  Optimal terms for wholesale and retail buyers.
• Cutting and delivery services.
  We prepare products according to your requirements.
• Professional consultations.
  Our specialists will help you select the material that best fits your project needs.

Contact us to clarify prices and place your order. Steel round bar 1.7709 / 30CrMoV9 is a reliable solution for industrial tasks!

Forms made of steel 1.7707 / 30CrMoV9