Definition and Composition

8620 alloy steel is a low-carbon, nickel-chromium-molybdenum alloy known for its exceptional strength, toughness, and case hardening capabilities. This alloy steel is composed of key elements, including carbon, manganese, silicon, nickel, chromium, and molybdenum. The specific composition is typically as follows: carbon (C) content of 0.18-0.23%, manganese (Mn) content of 0.70-0.90%, silicon (Si) content of 0.20-0.35%, nickel (Ni) content of 0.40-0.70%, chromium (Cr) content of 0.40-0.60%, and molybdenum (Mo) content of 0.15-0.25%. These elements play a crucial role in determining the unique properties of 8620 alloy steel.

Physical and Mechanical Properties

8620 alloy steel exhibits a range of physical and mechanical properties that make it highly desirable for various applications.

In terms of physical properties, 8620 alloy steel has a density of 7.85 g/cm³, providing a solid and sturdy foundation for applications requiring strength and durability. It has a melting point that typically ranges from 1432-1516°C (2610-2750°F), enabling it to withstand high-temperature environments. Additionally, its thermal conductivity of 46.6 W/m·K (323 BTU·in/hr·ft²·°F) allows for efficient heat transfer in thermal applications.

In terms of mechanical properties, 8620 alloy steel offers impressive strength, hardness, and toughness. It possesses a tensile strength of 530-685 MPa (77,000-99,400 psi), which enables it to withstand substantial loads and stresses. The hardness of 8620 alloy steel typically falls within the range of 170-217 Brinell (HB), ensuring resistance to wear and deformation. Moreover, this alloy steel demonstrates excellent toughness, with an elongation of 25-30%, making it capable of withstanding heavy impacts and shocks without fracturing.

The combination of these physical and mechanical properties makes 8620 alloy steel highly suitable for a wide range of applications, where strength, toughness, and case hardening ability are crucial. As professional alloy steel suppliers, HXSCO provide high quality alloy.

Case Hardening Ability

8620 alloy steel possesses exceptional case hardening capabilities, making it a preferred choice for applications requiring enhanced wear resistance and surface hardness.

The case hardening process involves selectively hardening the outer layer of the steel while maintaining a relatively softer core. This is achieved through a combination of heat treatment and diffusion of carbon and other alloying elements into the surface of the steel. 8620 alloy steel exhibits excellent response to case hardening, allowing for precise control over the hardness depth and hardness profile.

By undergoing case hardening, 8620 alloy steel attains remarkable wear resistance, enabling it to withstand abrasive forces and prolonged use in demanding environments. The hardened surface also provides enhanced resistance to surface deformation and scratches, ensuring longevity and durability of the material.

High Strength and Toughness

One of the notable characteristics of 8620 alloy steel is its inherent strength and toughness. This alloy steel demonstrates a balanced combination of these properties, making it suitable for applications that require both strength and the ability to absorb shock and impact.

With a high tensile strength ranging from 530 to 685 MPa (77,000 to 99,400 psi), 8620 alloy steel can withstand heavy loads and stresses without experiencing significant deformation or failure. This strength is crucial in applications where structural integrity is of utmost importance, such as gears, shafts, and other mechanical components.

Additionally, 8620 alloy steel exhibits exceptional toughness, which allows it to absorb energy and resist fracture under impact and shock-loading conditions. This property makes it well-suited for applications involving sudden and severe loads, where the material needs to withstand and distribute forces effectively.

The combination of high strength and toughness in 8620 alloy steel provides a reliable and robust solution for various industries. From automotive to machinery and even aerospace, this alloy steel can be found in critical components that require reliable performance under demanding conditions.

As dedicated alloy steel suppliers, we understand the importance of providing high-quality 8620 alloy steel that exhibits these key features and advantages. At HXSCO, we offer a wide range of 8620 alloy steel products, ensuring precise composition and adherence to industry standards. Our commitment to quality and customer satisfaction makes us the preferred choice for alloy steel solutions. when you are choosing professional alloy steel suppliers, HXSCO can satisfy you requirements.

8620 alloy steel stands out among various steel grades due to its outstanding advantages and unique combination of properties.

Superior Strength and Toughness

8620 alloy steel offers remarkable strength and toughness, making it highly desirable for applications that require robust and durable materials. With a tensile strength ranging from 530 to 685 MPa (77,000 to 99,400 psi), 8620 steel exhibits excellent resistance to deformation and fracture, even under heavy loads and harsh operating conditions. Its high toughness ensures it can withstand impact and shock-loading, providing enhanced reliability and safety in critical applications.

Versatility and Adaptability

Compared to other grades, 8620 alloy steel showcases exceptional versatility and adaptability. It can be readily machined and fabricated into various shapes, allowing for the production of complex components and intricate designs. This versatility makes it a preferred choice for applications in diverse industries, including automotive, machinery, aerospace, and defense. Its adaptability also extends to welding and joining processes, enabling easy integration into existing systems or assemblies.

Case Hardening Capability

One of the outstanding advantages of 8620 alloy steel is its superior case hardening ability. Through the case hardening process, the outer layer of the steel is hardened while maintaining a relatively softer core. This provides a hardened surface that offers exceptional wear resistance and surface hardness. Compared to other grades, 8620 alloy steel achieves a deep and uniform hardness profile, ensuring long-lasting performance in demanding applications. The case hardening capability of 8620 steel sets it apart as an excellent choice for applications that require enhanced wear resistance, such as gears, camshafts, and other components subjected to friction and abrasive forces.

Cost-Effectiveness

8620 alloy steel offers an advantageous balance between performance and cost-effectiveness. While providing high strength, toughness, and case hardening capabilities, it remains relatively more affordable compared to certain higher-alloyed steels. This makes 8620 alloy steel an attractive option for manufacturers and end-users seeking cost-efficient solutions without compromising on quality or performance. Its availability and competitive pricing further contribute to its popularity as a versatile and economical alloy steel choice.

As experienced alloy steel suppliers, we understand the unique advantages that 8620 alloy steel brings to various industries. At HXSCO, we are dedicated to providing high-quality 8620 alloy steel products that meet industry standards and customer specifications. Our commitment to quality control, extensive product range, and exceptional customer service sets us apart as a trusted partner in the supply of alloy steel.