ThePipingMart Blog Grades Weldox 400 – Composition, Properties, and Uses

Weldox 400 – Composition, Properties, and Uses

Weldox 400

If you are looking for durable, easy-to-use high-strength steel with excellent corrosion resistance, you might have heard about Weldox 400. Weldox 400 is a high-strength steel widely used in various applications, such as construction, mining, transport, and energy production. This blog post will discuss everything you need to know about this remarkable steel, including its composition, mechanical and physical properties, uses, corrosion resistance, heat treatment, and machining.

What is Weldox 400?

Weldox 400 is a high-strength steel low in carbon, making it easy to weld and form. It comprises several alloying elements, such as chromium, molybdenum, and manganese, which enhance the strength and durability of the steel.

Weldox 400 Composition

The chemical composition of Weldox 400 is summarized in the table below:

  • Element | Content (%)
  • | —
  • Carbon (C) | 0.20 max
  • Silicon (Si) | 0.50 max
  • Manganese (Mn) | 1.50 max
  • Phosphorus (P) | 0.025 max
  • Sulfur (S) | 0.010 max
  • Chromium (Cr) | 1.00 max
  • Molybdenum (Mo) | 0.25 max

Weldox 400 Mechanical Properties

Weldox 400 has excellent mechanical properties that make it suitable for high-stress applications. It has a tensile strength of 1400 MPa and a yield strength of 1100 MPa. The steel can withstand impact forces and has a good bending and stamping ability. These properties make Weldox 400 ideal for components that experience shock or heavy loads.

Weldox 400 Physical Properties

Weldox 400 has desirable physical properties that contribute to its durability and longevity. The steel has a high hardness level of 400 HBW, increasing its wear and tear resistance. Its density is 7.85 g/cm³, making it an ideal choice for weight-sensitive applications. The steel also has excellent toughness, which makes it resistant to cracking and deformation.

Weldox 400 Uses

Weldox 400 is a versatile steel that can be used for different applications. It is commonly used to construct mining equipment, excavators, dump trucks, and other heavy machinery. It is also used in transport applications like truck trailers, tanks, and containers. Weldox 400 is an ideal choice for any application that requires high strength, durability, and toughness.

Weldox 400 Corrosion Resistance

Weldox 400 has superior corrosion resistance compared to other steels. Its advanced chemistry resists rust, corrosion, and the accumulation of dirt and debris. It is an ideal choice for applications with essential corrosion resistance, such as offshore structures, marine environments, and harsh industrial conditions.

Weldox 400 Heat Treatment

Weldox 400 can be hardened by heat treatment to increase its strength and durability. The steel can be quenched and tempered to achieve a hardness level between 400-500 HBW. The hardening process enhances the steel’s performance, making it an ideal choice for high-wear resistance components.

Weldox 400 Machining

Weldox 400 is a steel that is easy to machine. The low carbon content of the steel makes it easy to cut and shape, while its high hardness level increases its resistance to wear and tear. Weldox 400 is suitable for applications requiring precision milling, drilling, and turning.

Weldox 400 Welding

Weldox 400 is a high-strength, low-alloy steel material featuring excellent weldability and formability. It is ideal for welding at temperatures up to 450° Celsius and offers superior mechanical strength and fatigue resistance. With its unique combination of properties, Weldox 400 can be used in many applications that require high mechanical strength.


Weldox 400 is a high-strength steel famous for its impressive mechanical, physical, and chemical properties. It’s advanced chemistry and superior toughness make it an ideal choice for various applications that require strength, durability, and corrosion resistance. It is a versatile steel that can be machined and heat-treated to further enhance its performance. If you are looking for reliable and durable steel for your next project, Weldox 400 is an ideal choice.

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