SSAB Strenx 700 E

Product identity and ordering

SSAB's Strenx 700 E plate table gives 700 MPa minimum Rp0.2 through 53.0 mm and 650 MPa in the 53.1–100.0 mm and 100.1–160.0 mm bands. At 60 mm, use the 650 MPa row and ISO/TR 15608 group 3.1 for welding procedure qualification. The welding guide uses group 3.2 at ≤53.0 mm. SSAB thickness table, SSAB welding material groups

Strenx 700 E is SSAB's structural plate product conforming to S690QL under EN 10025-6. SSAB lists a 4–160 mm thickness range. Its separate 700 F product conforms to S690QL1; retain the suffix rather than ordering an unspecified “Strenx 700.” SSAB: Strenx 700 E/F

For a fabricated load-bearing part, establish the design and execution requirements alongside the material order. Receipt of conforming plate does not establish the capacity of the finished member, weld or connection.

Strength depends on thickness

SSAB's mechanical table uses transverse specimens:

The trade name therefore does not promise a 700 MPa minimum at every thickness. SSAB: mechanical-property table

Toughness and thermal exposure

SSAB lists 69 J at −40°C for 700 E using a transverse 10 × 10 mm Charpy-V specimen. Unless otherwise agreed, transverse testing follows EN 10025-6 option 30. At 6–11.9 mm, sub-size specimens use a proportionally reduced minimum based on cross-sectional area. The 700 F row has a different toughness basis. SSAB: impact properties and footnote

A Charpy acceptance temperature is not blanket authorization for every structure to operate at that temperature. Establish the finished detail's toughness requirements against thickness, stress, load rate, weld quality and the governing design rules.

SSAB states that quenching and tempering produce the properties and that delivery-condition properties cannot be retained after exposure above 580°C. This is a processing limit statement, not a service-temperature guarantee below that value. SSAB: fabrication recommendations

Record thermal cutting, welding, straightening and any coating/heat-treatment exposure. Evaluate locally altered material separately from unaffected incoming plate. Obtain producer advice before adding a heat-treatment step to an established fabrication route.

Bending: final radius and punch radius differ

SSAB's Bending of Strenx, V1 (2026) distinguishes guaranteed minimum final inner radius Ri from recommended minimum punch radius Rp. Its Table 2 applies to roll dies and normal friction without lubrication. For 8 ≤ t < 15 mm Strenx 700 E/F, it lists:

Use the dated guide with its conditions, not an isolated ratio from another product or edition. SSAB: bending guide, Table 2

Calculated illustration: for t = 10 mm in that row, transverse values give Ri = 13 mm, Rp = 15 mm and W = 100 mm; along-rolling values give Ri = 18 mm, Rp = 20 mm and W = 100 mm. These are ratio calculations, not a complete press-brake setup or a finished-dimension guarantee.

Confirm the guide's direction convention, tooling, edge preparation and plate condition. Qualify springback and final geometry on representative stock. SSAB's guide recommends trials; a final-radius requirement cannot simply be substituted for the tool radius. SSAB: bending guidance and trials

Welding qualification has a thickness boundary

The Welding of Strenx, V1 (2026) guide assigns 700 E to ISO/TR 15608 group 3.2 at ≤53.0 mm and group 3.1 above 53.0 mm when performing procedure qualifications. The same product name therefore spans a qualification-relevant material-group boundary. SSAB: welding guide, material groupings

That grouping does not by itself establish the range covered by an existing welding procedure. Have the responsible welding assessment resolve base-material identity, thickness, joint, process, consumables and qualification coverage. Keep procedure qualification separate from production inspection and welder qualification.

The guide discusses preheat/interpass temperature, heat input, consumables and hydrogen cracking. Use the actual combination of materials, thicknesses, restraint and process conditions to develop the procedure. Do not treat the base-metal strength as a weld-metal guarantee or select a universal preheat from the trade name. SSAB: welding guidance

Fatigue and finished-part release

SSAB's fatigue guidance explains that welded details are strongly influenced by stress concentration, weld imperfections and residual stresses. Increased base-metal strength does not automatically produce a matching improvement in a welded component; reducing thickness can increase working stress. Its trailer examples explain the mechanism rather than qualifying an arbitrary plate assembly. SSAB: fatigue design guidance

For a boom, frame or other cyclically loaded component, retain the actual load spectrum, connection detail and inspection requirements. Assess corrosion protection, drainage and maintenance alongside the initial calculation. Define acceptance of cut edges, bend surfaces, welds, dimensions and any locally heated areas at the finished-part stage.

A release record should connect the heat/certificate to the drawing, approved material row, qualified processes and final inspection. Review substitutions against those linked requirements rather than accepting a matching nominal strength label.

Source versions

The bending guide prints 422-EN, V1 2026; the cited welding guide prints 420-UK, V1 US Letter 2026. The live product and fatigue pages do not establish a technical revision date here. URL timestamps are not treated as editions; obtain current controlled documentation and standard editions for the actual order.

Grades, conditions and material selection