Surprising Facts About SCM440H Steel Hardness After Heat Treatment

1. Hardness of SCM440H Steel After Heat Treatment

Heat treatment plays a crucial role in improving the mechanical properties of SCM440H steel. After undergoing heat treatment processes, the steel can achieve:

- Hardness levels of 50–55 HRC

- Increased strength

- Enhanced wear resistance

- Extended product lifespan

Among the various heat treatment methods, oil quenching and induction hardening are most commonly applied to SCM440H due to their cost-effectiveness and quality results.

2. Recommended Heat Treatment Methods for SCM440H

a. Oil Quenching

This method involves using oil as the cooling medium during quenching. The oil is typically made from paraffinic mineral oil blended with cooling accelerators and additives to:

- Enhance surface finish by reducing carbon residue.

- Control temperature during quenching, resulting in uniform hardness from surface to core.

Advantages:

- Produces a consistently hard surface.

- Prevents oxidation, leaving a clean and smooth surface finish.

b. Induction Hardening (PHA/HAI Surface Heat Treatment)

This process utilizes electromagnetic induction to heat the steel surface before rapidly cooling it. It results in:

Surface hardness depth of 0.5–2 mm, ideal for applications requiring surface durability, such as gears and other machine components.

Advantages:

- Targets specific areas for hardening, preserving the steel's core properties.

- Ensures high surface wear resistance for specialized components.

Choosing the Right Heat Treatment

The choice of heat treatment depends on the product's application. While oil quenching provides uniform hardness, induction hardening is best suited for components requiring surface durability.

Key Considerations:

- Select a reputable heat treatment provider to ensure the desired hardness (50–55 HRC) and quality.

- Use certified SCM440H steel to guarantee compatibility with the heat treatment process.

Why Choose Sevit SCM440H Steel?

At Sevit, we supply high-quality SCM440H steel tailored for heat treatment. With its ability to achieve superior hardness and mechanical properties, SCM440H is perfect for demanding applications.

Have questions or need assistance? Contact us today!

  * Tel: +84 332 91 61 61

  * Email: sales@sevit.vn 

  * Zalo: Sevit Special Steel