Strenx 700 HR W
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General Product Description
The high-strength, corrosion resistant structural steel at 700 MPa.
Strenx® 700 HR W is a hot-rolled weathering steel made for cold forming, with a minimum yield strength of 700 MPa for stronger and lighter structures.
Strenx® 700 HR W meets or exceeds the requirements of S700MC in EN 10149-2. Typical applications include a wide range of components and parts
in demanding load-bearing structures. Strenx® 700 HR W comes in coils, slit coils or cut-to-length sheets.
Mechanical Properties
The mechanical properties are tested in the longitudinal direction.
1) If ReH is not applicable then Rp0.2 is used.
2) For both longitudinal and transverse direction.
Impact Properties
1) Impact testing according to EN ISO 148-1 is performed on thicknesses ≥ 5 mm. The specified minimum value corresponds to a full-size specimen.
Chemical Composition (ladle analysis)
The steel is grain refined.
Carbon Equivalent CET(CEV)
Thickness
Tolerances according to Strenx® Thickness Guarantee.
Strenx® Guarantees offer considerably narrower thickness tolerances compared to EN 10051.
Length and Width
Width and length tolerances according to SSAB standard.
SSAB standard offer narrower width and length tolerances compared to EN 10051.
Length tolerances only apply for cut to length sheets.
Shape
Tolerances according to EN 10051. Narrower tolerances according to the SSAB standard are available on request.
Surface Properties
According to EN 10163-2 Class A, Subclass 3.
Delivery Conditions
Thermomechanically Rolled. Strenx® 700 HR W is available in as rolled or pickled surface condition with mill or cut edge.
Delivery requirements can be found in SSAB’s brochure Strenx® Guarantees or www.ssab.com.
Fabrication and Other Recommendations
Welding, bending and machining
Strenx® 700 HR W has good welding, cold forming and cutting performance.
Strenx® 700 HR W is not suited for heat treatments at temperatures above 580°C since the material then may lose its guaranteed properties.
The weldability of Strenx® 700 HR W is good. All the conventional fusion welding methods can be used. To obtain the same corrosion resistance in the weld as in the base metal, special filler metals should be used. Painting of Strenx® weather resistant steel is easy and will result in good paint adhesion. This can further increase the maintenance interval of the component. In order to ensure the uniform colour of the patina, all impurities must be cleaned from the steel surface. Organic impurities such as oil or protective greases must be removed by washing with suitable solvent.
Surface oxidation, oxides or rust can be removed by either shot-blasting or pickling. This will also accelerate the patina formation process. Shot-blasting is not recommended for thicknesses below 4 mm. The surface of a clean weathering steel surface can be pre-patinated by allowing the surface to get wet and dryin repeated intervals.
For information concerning fabrication, see SSAB´s brochures on www.ssab.com or consult Tech Support.
Appropriate health and safety precautions must be taken when bending, welding, cutting, grinding or otherwise working on the products.
Ready to upgrade?
Upgrading from Strenx® 700 W to Strenx® 960 W means you can improve the performance and reduce the weight of your equipment. The increase in yield strength by 37% allows for a great leap in the equipment’s load-bearing capacity. Get in touch with our steel specialists at SSAB Tech Support or SSAB Knowledge Service Center for an update on upgrading.