The Role of Nickel in SCM440H Steel: A Game Changer

1. Chemical Composition of SCM440H Steel

The chemical composition of steel plays a pivotal role in determining its quality. While traditional carbon steels like S45C, S50C, and S55C are known for their hardness, they lack flexibility and are prone to wear and impact damage. SCM440H was designed to overcome these limitations.

Here’s the chemical composition of SCM440H:

Key Highlights:

- Chromium (0.85%–1.25%) and Molybdenum (0.15%–0.3%) give SCM440H superior properties compared to carbon steels.

- A standout feature of SCM440H is the inclusion of Nickel (≤0.25%), which sets it apart from other steel grades.

2. The Impact of Nickel in SCM440H Steel

a. What is Nickel?

Nickel was discovered in 1751 by Swedish chemist Axel Fredrik Cronstedt during the separation of NiAs ore. Nickel is a silvery-white metal with a shiny surface, known for its hardness, malleability, ductility, and ability to be drawn into wires. These qualities make it a valuable material in mechanical and industrial applications.

Nickel occurs naturally as compounds with sulfur (in millerite) and arsenic (in niccolite). Under normal conditions, Nickel remains stable in air and is resistant to oxidation, making it ideal for producing coins, metal plates, brass, and stainless steel alloys.

b. The Benefits of Nickel in SCM440H Steel

Nickel, when added to SCM440H at 0.25%, significantly enhances the steel's properties, addressing the shortcomings of traditional carbon steels.

Key Advantages:

Enhanced Mechanical Properties:

The combination of Nickel and Chromium (0.85%–1.25%) contributes to high strength and toughness, making SCM440H suitable for demanding applications like gears, transmission shafts, rolling mill components, and plastic molds.

Improved Corrosion Resistance:

Nickel remains stable in air and resists oxidation even at temperatures up to 500°C, providing excellent anti-rust and corrosion-resistant capabilities.

Chemical Resistance:

Nickel resists corrosion from various acids, making SCM440H suitable for specialized environments that demand both strength and durability.

Superior Oxidation Resistance:

Nickel’s resistance to oxidation under extreme conditions ensures the longevity and reliability of SCM440H in harsh environments.

Thanks to Nickel, SCM440H steel achieves exceptional physical and mechanical properties, making it a superior choice for high-performance applications.

Why SCM440H Outperforms SCM440

Given its chemical composition, SCM440H surpasses SCM440 and traditional carbon steels in terms of toughness, corrosion resistance, and mechanical performance. These improvements make SCM440H a trusted material for industries requiring precision and durability.

Ready to experience the benefits of high-quality SCM440H steel? Order now through Sevit’s website or contact us directly:

  * Tel: +84 332 91 61 61

  * Email: sales@sevit.vn 

  * Zalo: Sevit Special Steel