Strenx® 700: High-strength structural steel for lightweight structures
Strenx® 700 is a high-strength structural steel with a guaranteed minimum yield strength of 650–700 MPa, depending on product and thickness. It helps engineers reduce weight and increase load-bearing capacity, enabling lighter, stronger, and more productive equipment across demanding industries.
High-strength structural solution overview
When your application demands high load-bearing capability, structural optimization and weight reduction, Strenx® 700 provides the strength and consistency to enable lighter, stronger and more efficient structures, from the first engineering draft to the final dynamic application.
With consistent material properties, tight dimensional tolerances and predictable workshop behavior, Strenx® 700 is well suited to automated and high-volume production. Its reliable properties help manufacturers optimize automated cutting, forming, welding and assembly processes, reduce variation and rework, and achieve consistent production quality from component to component.
Core technical value proposition
- On average 20%, but in some cases up to 40%, structural weight reduction: Transitioning from conventional structural steel to Strenx® 700, combined with proper structural design, can enable thinner plate and wall thicknesses while maintaining the required structural integrity, fatigue performance and safety
- Minimized production & material costs: Consistent material properties and tight dimensional tolerances enable optimized material thickness and more consistent production. Thinner sections reduce weld joint volumes, filler material consumption and processing time, while predictable material behavior helps minimize variation, rework and production interruptions.
- Designed for demanding cyclic loads: Strenx® 700 provides the high strength and consistent material properties needed for lightweight structures exposed to demanding cyclic loading. Combined with appropriate structural and weld-detail design, it can help engineers achieve the required fatigue performance while reducing structural weight.
Engineering metrics & mechanical optimization
The Strenx® 700 product group includes high-strength structural steels with a guaranteed minimum yield strength of 650–700 MPa (94–101 ksi), depending on product and thickness. The high yield strength enables engineers to design structures that withstand higher loads while maintaining structural integrity, reducing the amount of material needed and enabling weight-efficient designs.
Technical comparison matrix: Strenx® 700 vs. standard S355
Compare the key mechanical and manufacturing properties of Strenx® 700 with conventional S355 structural steel. The comparison highlights how higher strength, consistent material properties, and tight dimensional tolerances can enable lighter, more efficient structures, and more predictable production.
Strenx® 700 product group range, shapes & specifications
Browse the complete array of Strenx® 700 high-strength structural steel grades. These materials are optimized for a wide range of structural formats, geometric profiles, and workshop conditions worldwide.
-60°C (-76 °F) and guaranteed flatness after cutting. Designed for reliable load-bearing structural integrity in arctic climates.
Rigid and consistent properties ensure highly predictable fabrication batch after batch.
Examples of industrial applications of Strenx® 700 structural steel
Industrial lifting systems, cranes & booms
Strenx® 700 high-strength structural steel enables lighter, stronger and more efficient lifting equipment, from loader cranes and mobile cranes to aerial work platforms, telehandlers and other boom systems. By combining high strength with consistent properties, Strenx® 700 helps designers reduce structural weight and optimize components such as booms, outriggers, chassis and frames.
The result can be longer reach, greater lifting capacity and increased payload, without adding unnecessary weight. In demanding lifting applications, this allows equipment manufacturers to develop more compact and efficient structures while maintaining the strength, durability and fatigue performance required for continuous operation. The consistent bendability of Strenx®, together with tight bending radii, gives designers and manufacturers greater freedom to optimize boom geometry for strength, stability, stiffness and fatigue performance, rather than simply adding material thickness.
Transportation, chassis & trailers
Strenx® 700MC grades are widely integrated into transportation vehicle chassis such as semi-trailers, trailer frames and bulk transportation equipment. By replacing conventional structural steel with Strenx® 700, engineers can reduce material thickness and structural weight while gaining greater freedom to optimize the design for the required strength, stiffness and fatigue performance. This increases payload limits and lowers long-haul fuel consumption, improving logistics margins across transport and heavy-haul operations.
Explore Strenx® for transportation
Structural tubes, hollow sections & frame geometry
When advanced structural designs encounter complex multi-axis loads, Strenx® 700 high-strength structural hollow sections deliver high torsional stiffness and bending efficiency. Available in circular, square, and rectangular tube profiles, these hollow sections are engineered to fully replace traditional heavy hot-rolled steel shapes or standard S355 tubes. Their precise geometric profiles and strict wall-thickness uniformity guarantee predictable automated processing, optimized fit-up alignment in welding jigs, and long-term structural reliability.
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Agricultural machinery & equipment
Modern agricultural machinery including wide-span planters, spreaders, field trailers and tilling equipment can benefit from Strenx® 700MC and Strenx® 700 Tube, combining high structural strength with lower weight and excellent fatigue performance.
A strong example is Equalizer’s 36-row precision planter, where Strenx® 700 Tube and Strenx® 700MC structural steel enabled an approximately 40% reduction in framework weight compared with the original S355 steel design. The lighter planter allows farmers to cover up to 5 additional hectares per hour while reducing fuel consumption by more than 400 liters per planting season.
Industrial components & precision fabrication
Strenx® 700 provides excellent versatility across highly specialized fabricated components, including laser-cut plates, custom-bent brackets, and precision-machined or cold-formed machinery parts. Strenx® 700 is produced with exceptional cleanliness and consistent material properties, it offers predictable machining, cutting and forming performance throughout the manufacturing process. Backed by comprehensive guarantees covering flatness, uniform thickness and strict minimum bend radii, it fits perfectly within high-volume automated production lines, ensuring high repeatability, minimizing material waste and supporting efficient fabrication.
Forestry rigs & heavy material handling systems
Forestry equipment, timber-handling machinery and recycling systems are subjected to severe dynamic loading, impacts and millions of fatigue cycles throughout their service life. Strenx® 700 combines high yield strength and, for selected grades, high impact toughness, helping manufacturers design lightweight structures for demanding dynamic loads and harsh operating environments.
Structural engineering case study of MPG Cranes
For premier mobile crane manufacturer MPG Cranes, trimming equipment dead weight while maximizing safe lifting capacity and telescoping reach represents the core of their product R&D strategy. By substituting standard steel with Strenx® 700 structural steel inside their primary crane chassis, and using ultra-high-strength Strenx® grades within the telescoping boom profiles, MPG successfully developed a new generation of lightweight, high-capacity machinery.
Key performance realized summary of MPG Cranes
- Material Optimization: Replaced conventional structural steel with multiple Strenx® grades, including Strenx® 700, 960 and 1100, optimized for different components of the crane chassis and boom structure.
- Weight & Payload Yield: Achieved significant reduction in structural dead weight, directly translating into extra legal payload margin for support vehicles.
- Operational Reach & Capacity: Extended maximum boom lifting range and geometric reach while maintaining adequate structural stiffness and fatigue performance.
Consistent workshop processing recommendations
Strenx® 700 is engineered to maintain highly predictable, uniform behavior during standard industrial fabrication processes. This supports high processing repeatability and more consistent results in automated manufacturing.
Advanced structural welding
Strenx® 700 structural steel can be welded using all conventional commercial welding methodologies, including Metal Active Gas (MAG), Manual Metal Arc (MMA) and submerged arc welding. Because of its carefully controlled low carbon equivalent value (CEV), Strenx® 700 requires significantly lower preheating temperatures than generic steels of equivalent tensile strength, reducing energy consumption.
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Machining
Strenx® 700 can be drilled, tapped, milled and countersunk using standard shop floor machines. For optimized production capacity, operators should use stable fixture settings, ensure ample coolant supply. Use High-Speed Steel Cobalt tools (HSS Co) or carbide-tipped cutting tools configured for optimal cutting speeds and feeds.
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Bending & roll forming
Standard heavy workshop press brakes and roll forming lines easily process Strenx® 700 plates, structural sheets, and strips. Uniform batch-to-batch mechanical yield limits and tight thickness tolerances guarantee predictable material springback angles, ensuring no surface micro-cracking during tight radius forming.
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Thermal & laser cutting solutions
The clean, scale-free surface of Strenx® structural products makes them well suited to high-speed automated laser cutting without prior surface preparation. In addition, standard thermal cutting via plasma or oxy-fuel systems proceeds smoothly across all plate thicknesses.
Guillotine shearing & mechanical cutting
Mechanical sizing of Strenx® steel is best executed on heavy-duty industrial guillotine shears. For optimized edge quality, operators must adjust blade clearance and blade hardness settings based on material thickness. For best performance, ensure the material is at a uniform room temperature of approximately +20 °C (+68 °F) prior to shearing.
Strenx® guarantees and tolerances
Strenx® guarantees tight tolerances for thickness, flatness, and bending properties. This enables more precise weight control, reduced safety margins, and predictable workshop performance, every time.
View Strenx® guaranteesWhy choose Strenx® 700?
Strenx® 700 offers an ideal balance of strength, formability, and fabrication performance. It is a versatile structural steel for manufacturers looking to reduce weight, improve load-bearing capacity, and optimize designs.
A smarter alternative to conventional structural steel
With nearly double the yield strength of S355, Strenx® 700 enables lighter structures and higher performance without requiring major design changes. It is often the first choice for manufacturers taking their first step into high-strength structural steel.
Balance weight reduction and fabrication efficiency
Strenx® 700 combines high strength with excellent weldability and bending performance. Depending on the application, its higher strength can enable thinner sections, fewer or smaller welds and reduced weld volumes—helping manufacturers reduce fabrication time and material consumption while achieving lighter structures.
Available across multiple product formats
The Strenx® 700 product group includes plates, sheets, coils, slit coils, and structural tubes, giving engineers flexibility to optimize a wide range of equipment and structures using a single strength level.
Built for diverse structural applications
From trailers and cranes to agricultural equipment, forestry machines, and industrial structures, Strenx® 700 provides the strength and toughness needed to perform reliably under demanding operating conditions.
The balanced choice for structural optimization
For many applications, Strenx® 700 delivers the optimal combination of weight reduction, performance, formability, and cost efficiency. It enables meaningful structural improvements while remaining easy to process in modern workshops.
Technical FAQ
Strenx® 700 is a group of high-strength structural steels with a guaranteed minimum yield strength of 650–700 MPa (94–101 ksi), depending on product and thickness. It is classified as a high-strength steel because its yield strength is substantially higher than that of conventional structural steels such as S355, enabling thinner designs and potential weight reduction while maintaining structural performance.
Because Strenx® 700 delivers a substantially higher yield strength than standard structural steel, engineers can specify significantly thinner plate gauges and wall dimensions while fully maintaining or improving the structure's ultimate load capacity and fatigue resistance. This structural optimization reduces up to 40% of dead weight from structural components.
The Strenx® 700 family is supplied across a comprehensive range of physical formats to support diverse engineering requirements. This includes heavy hot-rolled structural plates, slit coils, and high-precision cold-formed structural tubes (encompassing circular, square, and rectangular hollow sections).
Yes. Strenx® 700 is engineered for excellent weldability using all conventional welding methods, including MAG, MMA, TIG, and submerged arc systems. Its carefully controlled, low carbon equivalent value (CEV) and low Thyssen carbon equivalent (CET) chemical formulation prevents micro-alloy embrittlement and permits significantly lower preheat temperatures compared to legacy structural steels of similar high strength.
Yes, the product group features specialized variations engineered for severe environmental exposure. Strenx® 700 F provides guaranteed Charpy V-notch impact energy toughness down to extreme sub-zero temperatures of -60 °C (-76 °F) for cold-climate structural integrity. For marine use, Strenx® 700 OME is certified to meet strict maritime classification rules for harsh offshore structural applications.
Strenx® 700 helps workshops reduce variation by delivering exceptionally predictable material behavior, not just high strength. Tight thickness and flatness tolerances, consistent mechanical properties, verified bending performance and excellent weldability work together to ensure that cutting, bending, welding and assembly processes produce the same result time after time.
For the fabricator, this means less variation in springback, fewer press-brake adjustments, more reliable fit-up of parts, reduced straightening and rework, and greater confidence in automated production. Consistency allows workshops to spend less time compensating for material variation and more time producing finished components, improving throughput, quality and overall manufacturing efficiency.
In commercial transport applications (such as semi-trailers, crane chassis, and heavy tipper bodies), upgrading structural frameworks to Strenx® 700 can reduce vehicle dead weight by up to 40%. This weight saving directly converts into additional legal payload capacity, maximizing revenue per haul. When running empty, the reduced vehicle mass lowers rolling resistance, cutting fuel consumption and overall fleet carbon emissions over time.
The higher strength of Strenx® 700 gives engineers greater freedom to optimize these factors. By reducing material thickness and optimizing the structural geometry and load paths, it is possible to achieve significant weight savings while maintaining the required fatigue performance.
This means that upgrading from conventional structural steel to Strenx® 700 should not be treated as simply replacing one steel grade with a thinner one. The greatest benefits are achieved when the increased strength is used as part of a structural redesign and optimization process.
Continue exploring Strenx® performance steel
Design with high-strength structural steel
Learn how to optimize structures using higher yield strength and reduce weightWorkshop recommendations for Strenx® steel
Guidelines for welding, bending, cutting, and machiningCustomer cases and applications
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