ThePipingMart Blog Grades Weldox 1300 – Composition, Properties, and Uses

Weldox 1300 – Composition, Properties, and Uses

Weldox 1300

Weldox 1300 is a high-strength steel that is ideal for heavy-duty applications. Constructed with a unique composition and impressive mechanical and physical properties, it’s no wonder why this steel is highly sought after in various industries. If you’re curious about what Weldox 1300 offers, you’ve come to the right place. In this blog post, we’ll discuss everything you need to know about Weldox 1300 – from its composition to its uses and heat treatment.

What is Weldox 1300?

Weldox 1300 is a high-strength, low-alloy structural steel with a minimum yield strength of 1300MPa. It has excellent weldability and formability, featuring good mechanical properties and excellent cold-forming characteristics. It is often used for applications such as bridges, cranes and lifting equipment.

Weldox 1300 Composition

Weldox 1300 is a quenched and tempered steel plate made of carbon, silicon, manganese, phosphorus, sulfur, chromium, molybdenum, nickel, and boric acid. With a low carbon content, it keeps the weldability high, while the other elements help to contribute to its impressive strength and resistance properties.

(max %)
Si *)
(max %)
Mn *)
(max %)
(max %)
(max %)
Cr *)
(max %)
Cu (max %) Ni*) (max %) Mo*) (max %) *)
(max %)
0.25 0.50 1.40 0.010 0.003 0.80 0.30 3.0 0.70 0.005

Weldox 1300 Mechanical Properties:

Due to its exceptional composition, Weldox 1300 boasts excellent mechanical properties that suit it for heavy-duty applications. Its ultimate tensile strength is 1300 MPa, exceeding most other strength plates. Moreover, it has excellent toughness and impact resistance, making it ideal for extreme applications in harsh environments.

Thickness (mm) Yield strength Rp0.2 (min MPa) Tensile strength R(min MPa) Elongation A(min %)
4.0 – 15.0 1300 1400 – 1700 8

Weldox 1300 Physical Properties

In addition to its mechanical properties, Weldox 1300 has unique physical properties that set it apart. It has a specific gravity of 7.8 and a density of 7,800 kg/m³, which makes it substantially heavier than conventional steels. Additionally, it has a high hardness number ranging from 42 to 50HRC, making it ideal for heavy-duty applications.

Weldox 1300 Uses

Weldox 1300 is known for its high strength-to-weight ratio, making it ideal for numerous applications. It is used in construction to build heavy-duty cranes, booms, and other large and complex structures. It is also used in the transport sector to make trucks, trailers, and railcars. Furthermore, it makes mining equipment, such as excavators and bulldozers.

Weldox 1300 Corrosion Resistance

Weldox 1300 boasts excellent corrosion resistance properties. It is resistant to corrosion and wear, making it ideal for use in aggressive environments. Extended exposure to seawater, humidity, or other corrosive environments will not damage it, which increases its lifespan compared to other steels.

Weldox 1300 Heat Treatment

Heat treatment of Weldox 1300 is crucial to ensure its exceptional mechanical and physical properties. After welding, it is recommended to heat-treat Weldox 1300 to help relieve welding stress and provide optimal toughness and hardness. Correct heat treating reduces the possibility of cracking and improves the material’s Machinability.

Weldox 1300 Machining

Weldox 1300’s high strength and hardness can make it challenging to machine. However, proper tooling and techniques can be machined relatively easily, ensuring optimal productivity.

Weldox 1300 Welding

Weldox 1300 is a type of high-strength steel filler metal used for welding. It has excellent mechanical properties and superior cracking, fatigue, wear and tear resistance. It is essential to know this material’s low hydrogen content, which helps minimize heat-affected zone (HAZ) cracking during welding.


Weldox 1300 is an impressive high-strength steel that is ideal for heavy-duty applications. Its unique composition, outstanding mechanical and physical properties, and increased lifespan due to its corrosion resistance properties make it the preferred option for many industries. Weldox 1300 offers exceptional strength-to-weight ratio, longevity, and consistent performance across various environments, from construction to mining to transportation. Understanding its composition, applications, and heat treatment certification is essential to maximize its robust set of properties.

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