Premium Alloy Steel Round Bar: 45CrMo4, 8620, 4340 Grades Hot Rolled

Discover premium-grade non-quenched and tempered steel round bars made from 45MnVS alloy, available in a versatile range of sizes—from the widely-used 20mm steel round bar to the robust 160mm steel round bar. Precision-engineered to meet the highest industry standards, these alloy steel round bars are the perfect solution for demanding applications such as piston rod shafts and other critical rod components.

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Premium Alloy Steel Round Bar: 45CrMo4, 8620, 4340 Grades Hot Rolled

Feature

  • Discover premium-grade non-quenched and tempered steel round bars made from 45MnVS alloy, available in a versatile range of sizes—from the widely-used 20mm steel round bar to the robust 160mm steel round bar. Precision-engineered to meet the highest industry standards, these alloy steel round bars are the perfect solution for demanding applications such as piston rod shafts and other critical rod components.

Specifications

1)Grade: 45MnVS, etc.
2)Packing: standard sea-worthy packing
3)Surface treatment: cutting, drilling, painting or as per customer’s requirement
4)Size: 20-160mm

Feature

Forged from premium alloy steels such as 45CrMo4, 8620, and 4340, our hot rolled alloy steel round bars deliver exceptional strength, wear resistance, and durability. Designed to withstand heavy loads and harsh operating environments, these high-grade Alloy Steel Round Bars offer a reliable, long-lasting solution for both large-scale manufacturing and specialized batch requirements.

Advantage

1.Outstanding strength and durability
Our alloy steel round bars (Alloy Steel Round Bar) are forged from selected materials, particularly in grades such as 45MnVS. Even in non-quenched and tempered conditions, they can offer excellent comprehensive properties comparable to those of quenched and tempered steel. The products possess outstanding tensile strength, fatigue strength, and excellent wear resistance, capable of withstanding heavy loads and extreme conditions, ensuring the durability and reliability of your components and extending the overall lifespan of the equipment.
2. Excellent processing performance and consistency
Whether it is the high strength and toughness of 45CrMo4, the excellent carburizing performance of 8620, or the deep quenching property of 4340, our hot-rolled alloy steel round bars (Hot Rolled Alloy Steel Round Bar) demonstrate outstanding cutting and welding properties. The stable chemical composition and uniform microstructure ensure a smooth processing process, high dimensional accuracy, and seamless integration into your automated production line or complex machining procedures.
3. Widespread applicability and high cost-effectiveness
Our product range covers various specifications from 20mm to 160mm, meeting different requirements ranging from precision parts to large structural components. The non-quenched and tempered steel eliminates the subsequent heat treatment process, not only saving energy and time costs, but also avoiding quality risks caused by heat treatment deformation. It provides you with an ideal material solution for high efficiency and low cost in fields such as automotive parts (such as piston rods, shafts), construction machinery, and heavy equipment manufacturing.
4. Reliable Materials and Traceability
We adhere to strict production control standards. The chemical composition and mechanical properties of all alloy steel rods comply with stringent international standards. Throughout the entire process from steelmaking to rolling, we ensure the stability and consistency of each batch of materials, providing you with traceable quality assurance and helping you manufacture more competitively superior end products.

20mm mild steel round bar

Application

1.Automobile and transportation manufacturing
Key components: Used for manufacturing high-load crankshafts, camshafts, piston rods, transmission shafts, gear shafts and steering link rods.
Application advantages: The material boasts excellent fatigue strength and wear resistance, capable of withstanding long-term high-speed operation and complex stress, ensuring the vehicle's power performance and safety.
2. Heavy Machinery and Engineering Equipment
Core structural components: Suitable for excavator boom, hydraulic cylinder piston rod, high-strength connecting pin shaft, load-bearing shafts of mining machinery, and gear blanks.
Application advantages: High toughness, impact resistance and wear resistance ensure the stable operation and long service life of the equipment under extreme working conditions.
3. Energy and Power Equipment
Key Components: Used in the main shaft of wind turbines, the transmission shaft of turbines, drill pipe joints of oil drilling equipment, and the valve stems of high-pressure valves.
Application advantages: The material properties are uniform and stable, with excellent fatigue resistance and corrosion resistance, capable of withstanding long-term high loads and operating in harsh environments.
4. High-end Molds and Precision Manufacturing
Mold substrates and precision parts: Suitable for injection mold frames, die-casting mold cores, precision screws, high-load bearing rings, and guide shafts for automated equipment.
Application advantages: Excellent cutting processing performance and dimensional stability, supporting high-precision processing and long-term reusability, enhancing mold lifespan and part consistency.
5. Aerospace and Special Equipment
Key load-bearing components: Applied to landing gear structural components, engine auxiliary transmission shafts, special hydraulic system piston rods, and high-strength fastener billets.
Application advantages: The material has high purity and excellent mechanical properties. Through a strict quality traceability system, it meets the stringent requirements for safety and reliability in specialized industries.

Steel Round Bar For Rod Parts

Application

As China metal materials industry leading enterprises, the national steel trade and logistics "Hundred good faith enterprise",China steel trade enterprises, "Top 100 private enterprises in Shanghai”. Shanghai Zhanzhi industry Group Co., Ltd.,(shorted to Zhanzhi Group) takes the" Integrity, Practicality, Innovation, Win-Win " as its sole operation principle, always persist in putting the customer demand in the first place.

  • INTEGRITY
  • WIN-WIN
  • PRAGMATIC
  • INNOVATION

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