ThePipingMart Blog Grades Strenx® 700 – Composition, Properties and Uses

Strenx® 700 – Composition, Properties and Uses

Strenx 700

Regarding high-strength steel, Strenx 700 is the top choice among many industries. This versatile material is known for its excellent mechanical properties and durability, making it a popular choice for various applications. This blog will closely examine what makes Strenx 700 stand out, including its composition, physical and mechanical properties, and typical uses. Furthermore, we will also discuss issues such as corrosion resistance, heat treatment, machining, and welding.

What is Strenx 700?

Strenx 700 is a high-strength structural steel with excellent weldability and bending properties. It offers superior strength and toughness in challenging environments, making it ideal for load-bearing applications such as bridges, cranes and buildings. It also has good cold formability for effortless machining and is corrosion-resistant, making it one of the most versatile and dependable materials on the market today.

Strenx 700 Composition:

Strenx 700 is high-strength steel with a minimum yield strength of 700Mpa. It primarily comprises iron and carbon, with varying amounts of alloying elements such as manganese, chromium, and silicon. Depending on the intended application, different levels of these elements can be added to Strenx 700 to achieve the desired properties.

C *)
(MAX %)
SI *)
(MAX %)
(MAX %)
(MAX %)
(MAX %)
(MAX %)
(MAX %)
(MAX %)
(MAX %)
(MAX %)
0.20 0.60 1.60 0.020 0.010 0.80 0.30 2.0 0.70 0.005

Strenx 700 Physical Properties:

Strenx 700 boasts an excellent combination of strength and toughness, making it resistant to impact and wear. It is also highly ductile and easily formed without cracking or breaking. Additionally, Strenx 700 is known for its outstanding weldability, which enables the production of complex structures with high strength-to-weight ratios.

Strenx 700 Mechanical Properties:

Strenx 700’s mechanical properties are among its most appealing aspects. It has a high tensile strength of around 780 MPa, which makes it suitable for challenging applications that require strength, durability, and resistance to deformation. Strenx 700 also has excellent fatigue and crack propagation resistance, making it ideal for use in parts subjected to dynamic loading.

(MIN %)
4.0 – 53.0 700 780 – 930 14
53.1 – 100.0 650 780 – 930 14
100.1 – 160.0 650 710 – 900 14

Strenx 700 Carbon Equivalent CET(CEV)

THICKNESS (mm) 4.0 – 5.0 5.1 – 30.0 30.1 – 60.0 60.1 – 100.0 100.1 – 130.0 130.1 – 160.0
Strenx® 700 E Max CET(CEV) 0.34 (0.48) 0.32 (0.49) 0.36 (0.52) 0.39 (0.58) 0.41 (0.67) 0.43 (0.73)
Strenx® 700 F Max CET(CEV) 0.38 (0.57) 0.38 (0.57) 0.39 (0.58) 0.39 (0.58) 0.41 (0.67)

Strenx 700 Uses

Strenx 700 is used in many industries, such as transportation, energy, construction, and mining, due to its excellent strength-to-weight ratio. It is used in constructing trailers, cranes, lifting equipment, offshore structures, and mining equipment. Strenx 700 is also used in heavy-duty machinery and equipment that require high load-bearing capabilities.

Strenx 700 Corrosion Resistance

While it is primarily known for its strength, Strenx 700 also offers excellent corrosion resistance. It is often used in harsh environments such as the offshore oil and gas industry and marine applications, where it is exposed to moisture, saltwater, and other chemicals. This property is preferred over other materials that may rust or deteriorate in such environments.

Strenx 700 Heat Treatment

Heat treatment can help modify the mechanical properties of Strenx 700, making it harder or more ductile, depending on the application. This treatment also improves the steel’s machinability, which is crucial when working with complex geometric shapes. Moreover,

Strenx 700 Welding

Strenx 700’s welding properties are excellent, and various welding techniques can be used, including MIG, MAG, TIG, and SAW.


Strenx 700 is a high-strength steel used in various demanding applications where strength and durability are critical. Its excellent mechanical and physical properties make it versatile, reliable, and a preferred choice for many industries. The opportunities for its use are endless, and with its corrosion resistance, heat treatment capabilities, and weldability, it continues to be a popular choice for challenging applications.

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