Strenx® 700 product group

Strenx® 700 is a group of structural steels with a minimum yield strength between 650 and 700 MPa (94-101 ksi) depending on thickness.

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SUITABLE APPLICATIONS
Wide range of load-bearing structures

TYPE OF PRODUCTS
Plate, sheet, coil and slit coil

THICKNESS RANGE
0.7-160 mm (0.028”-6.299”)

A wide range of high-strength steel for high-demanding structures

STRENX® 700 E

Typical applications include demanding load-bearing structures.

Impact toughness: 69 J at -40°C (51 ft-lb at -40°F)
Plate: 4-160 mm (0.157”-6.299”)
Standard: EN 10025-6 S690QL Impact test at -40°C (-40°F)
Format: Plate

STRENX® 700MC D

Typical applications include demanding load-bearing structures.

Impact toughness: 40 J at -20°C (30 ft-lb at -4°F)
Hot rolled strip: 2-10 mm (0.079”-0.393”)
Standard: EN 10149-2 S700MC Impact test at -20°C (-4°F) 
Format: Sheet, coil and slit coil

STRENX® 700MC E

Typical applications include demanding load-bearing structures in cold conditions.

Impact toughness: 27 J at -40°C (20 ft-lb at -40°F)
Hot rolled strip: 2-10 mm (0.079”-0.393”)
Standard: EN 10149-2 S700MC Impact test at -40°C (-40°F) 
Format: Sheet, coil and slit coil

STRENX® 700 F

For demanding load-bearing structures in cold and extreme conditions.

Impact toughness: 27 J at -60°C (20 ft-lb at -76°F)
Plate: 4-130 mm (0.157”-5.118”)
Standard: EN 10025-6 S690QL1 Impact test at -60°C (-76°F)
Format: Plate

STRENX® 700MC PLUS

High-strength structural steel with advanced cold formability and impact toughness for highly demanding applications.

Impact toughness: 40 J at -60°C (30 ft-lb at -76°F)
Hot rolled strip: 3-12 mm (0.079”-0.393”)
Standard: EN 10149-2 S700MC Impact test at -60°C (-76°F)
Format: Sheet

STRENX® 700 OME

A structural steel developed for use in demanding load-bearing structures within the offshore and marine Industry.

Impact toughness: 69 J at -40°C (51 ft-lb at -40°F)
Plate: 4-130 mm (0.157” -5.118”)
Standard: EN 10025-6 S690QL Impact test at -40°C
Format: Plate

STRENX® P700

Typical applications are demanding load-bearing structures exposed for pressure and elevated temperatures.

Plate: 4-100 mm (0.157”-3.937”)
Standard: EN 10 028-6 P690Q, P690QH, P690QL1 and P690QL2
Format: Plate

STRENX® 700 CR

Typical applications include a wide range of components and parts, for example load-bearing structures.

Cold rolled strip: 0.7-2.1 mm (0.028”-0.083”)
Standard: SSAB specification
Format: Sheet, coil and slit coil

Person inspecting bending of a Strenx® steel plate.

Strenx® 700 takes performance above and beyond

Yield strength of 700 MPa (101 ksi) and above is the new normal when designing high-strength steel. If you are using a lower strength steel, your products are probably not living up to their potential.

Upgrading to a steel with higher yield strength leaves room for more high performing designs with increased load-bearing capacity. The stresses can be higher which allows for the use of thinner steel. This adds several advantages:

• Depending on the starting point, designers can cut up to 40% weight of steel structures – and still increase the fatigue life.

• If the parts are welded, welding time and the amount of welding consumables will be significantly reduced.

Typical upgrading benefits

Strenx® 700MC is commonly used in lightweight solutions for trailer chassis. Upgrading a trailer chassis from a 350-grade using Strenx® 700MC typically generates a weight reduction of about 30% for the chassis structural parts. Depending on the chassis design, the weight reduction potential may be even higher, up to 50%. Strenx® 700MC meets or exceeds the EN 10149-2 standard for S700MC steels.
Schematic illustration of steel beams of different sizes.
  Original design a) Lightweight design b) Lightweight design c)
Steel Grade S355 Strenx® 700MC Strenx® 700MC 
Weight, m [kg/m] 42 27 30
Bending Moment Capasity, M [kNm] 286 306 369
Moment of Inertia, I [m4] 140E-06 93E-06 140E-06
Section Modulus, W [m3]
72E-05 46E-05 58E-05
Weight Reduction, WR [%] - 36 30
A tractor with cranes in Strenx® collecting timber in a wintery forest.

CUSTOMER CASE

Innovative crane design for extreme durability

Crane design often involves a compromise between weight and durability. Strenx® 700MC Plus made it possible for Kesla to design a lighter crane without compromising its durability. The material has a high toughness at temperatures as low as -60°C (-76°F) – making the crane reliable and safe even in harsh locations like Siberia.

Made for predictable performance in the workshop

Person welding Strenx® high-strength steel in the workshop.

Welding

Strenx® 700 can be welded using any conventional welding method. MAG welding is the most common technique today, since it is very easy to automate for high productivity.

A CNC machine with several drills for machining Strenx.

Machining

Strenx® 700 can usually be machined without special equipment. Stable machinery fitted with high-speed steel and carbide tools is recommended when drilling, countersinking, tapping, turning and milling.

A machine bending Strenx steel.

Bending

Free bending and roll bending of Strenx® steel plate and strip can be done using standard bending machinery. Uniform properties, close thickness tolerances and high surface quality ensure a predictable bending process.

 
A laser cutting head cuts a plate of Strenx steel.

Thermal cutting

Free bending and roll bending of Strenx® steel plate and strip can be done using standard bending machinery. Uniform properties, close thickness tolerances and high surface quality ensure a predictable bending process.

 
Handling a piece of Strenx structural steel before placing it in a cutting machine.

Mechanical cutting

Mechanical cutting of Strenx® 700 is best performed with guillotine shears. Consider carefully the settings of the cutting machine. The most important factors are clearance, cutting angle and blade hardness. The plate should be allowed to warm up thoroughly to around +20°C (68°F) before it is cut.

A straight ruler placed on Strenx steel to show its flatness.

Strenx® guarantees

Strenx® guarantees include tight thickness tolerances, tight flatness tolerances and bending properties. The tight thickness tolerances enable you to know the weight more precisely. As a result, you can reduce your safety margins. Precise thickness within a plate and between plates makes for safe and predictable performance in the workshop.

Strenx® 700 products and thicknesses

 
Strenx® 700
standard products
Thickness range [mm] Conform to standard Formats Typical products manufactured
with Strenx®
Plate Hot rolled strip Cold rolled strip
Strenx® 700 E 4-160 ---
---  EN 10025-6 S690QL Impact test at -40°C Plates Demanding load-bearing structures
Strenx® 700 F 4-130 ---  ---  EN 10025-6 S690QL1 Impact test at -60°C Plates Demanding load-bearing structures in cold
and extreme conditions
Strenx® 700 OME 4-130 --- ---  EN 10025-6 S690QL Impact test at -40°C
Plates Demanding load-bearing structures within
the Offshore and Marine Industry
Strenx® 700MC D --- 2-10 ---  EN 10149-2 S700MC Impact test at -20°C Sheets, Coils & Slit coils Wide range of structures
Strenx® 700MC E --- 2-10 ---  EN 10149-2 S700MC Impact test at -40°C
Sheets, Coils & Slit coils Wide range of structures
Strenx® 700MC Plus --- 3-12 ---  EN 10149-2 S700MC Impact test at -60°C
Sheets Structures requiring extreme formability
and impact toughness
Strenx® 700 CR --- --- 0.7-2.1  SSAB specification Sheets, Coils & Slit coils Wide range of structures
Strenx® P700 4-100 --- ---  EN 10028-6 P690Q, P690QH, P690QL1, P690QL2 Plates  Pressure vessel steel that is used for demanding
loadbearing structures exposed to pressure
and elevated temperatures
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