SSAB Strenx 700MC

Identity and scope

SSAB lists 700 MPa minimum longitudinal yield for Strenx 700MC D/E, with a footnote allowing the minimum to be 20 MPa lower above 8 mm. That permits 680 MPa at 9 mm. The table uses Rp0.2 where ReH is inapplicable. Agree any strict 700 MPa requirement with the supplier. SSAB 700MC mechanical footnotes

Strenx 700MC D/E is SSAB's thermomechanically rolled structural steel for cold forming, meeting or exceeding S700MC under EN 10149-2. It is supplied as coils, slit coils and cut-to-length sheets in 2–10 mm thickness. Retain the D/E suffix in the material order. SSAB product description and delivery conditions

This page concerns that flat product. A matching nominal strength number does not establish equivalence to Strenx 700 E plate, 700MC Plus or a finished Section product. Confirm the exact producer designation, standard, supplied form and certificate before evaluating a substitution.

Mechanical properties and footnotes

SSAB lists 700 MPa minimum ReH and 750–950 MPa Rm, tested longitudinally. Where ReH is inapplicable, Rp0.2 is used. Above 8 mm, minimum yield strength may be 20 MPa lower. Minimum elongation is 10% A80 below 3 mm and 12% A5 at ≥3 mm. Read these footnotes with the table rather than applying both elongation measures to every gauge. SSAB mechanical-property table and notes

The elongation figures use different gauge-length conventions; they are not interchangeable forming limits. Do not infer an allowable local strain at a cut edge or bend from a tensile elongation result. The tensile upper bound likewise is not a guaranteed minimum or a design allowable.

D and E impact requirements

The product table gives longitudinal Charpy-V minima of 40 J at −20°C for 700MC D and 27 J at −40°C for 700MC E, referenced to a 10 × 10 mm specimen. EN ISO 148-1 testing is performed at thicknesses ≥6 mm. SSAB impact table and footnote

These are different test requirements, not a simple ranking by joules alone. Establish the project's required temperature, orientation and acceptance basis before choosing the suffix. Do not invent an impact guarantee below the stated testing thickness or treat a Charpy temperature as universal authorization for a structure's operating temperature.

SSAB warns that heat treatment above 580°C may remove guaranteed properties. That fabrication warning does not establish an allowable service temperature below it. SSAB fabrication recommendations

Record relevant thermal exposure, including straightening, welding and any proposed heat treatment. Assess locally affected regions separately from unaffected incoming sheet when the fabrication changes the condition on which supplied properties depend.

Bending: specify the tool and the result separately

Bending of Strenx V1 (2026), Table 3 distinguishes guaranteed minimum final inner radius Ri from recommended minimum punch radius Rp. For 700MC D/E, both rolling directions have the following ratios. The table assumes roll dies and normal friction without lubrication. SSAB bending guide, Table 3

The guide bases its bending recommendations on a one-step bend to 90° after unloading and recommends trials. Die-opening values are guidance, rather than a complete setup specification. SSAB bending guide, bending guarantees and recommendations

Calculated illustration: for 5 mm sheet, the row gives Ri = 6 mm, recommended Rp = 7 mm, and W = 50 mm. These follow from 1.2 × 5, 1.4 × 5 and 10 × 5. The final radius and punch radius are different quantities; specifying a 6 mm punch would not follow that recommendation.

The example is not a qualified press-brake program. Confirm edge condition, tooling, flange geometry and available force, then measure springback and final dimensions on representative material. Preserve the rolling-direction identification when the drawing or fabrication procedure requires it, even where this table gives equal ratios.

Welding and fatigue

Welding of Strenx V1 (2026) places grades ending in MC in ISO/TR 15608 group 2.2 for welding-procedure qualification. This differs from the group assigned to quenched-and-tempered 700 E plate; a shared “700” does not establish procedure coverage. SSAB welding guide, material groupings

Use the guide's material, joint and thickness conditions when setting preheat/interpass temperature, heat input and consumable requirements. Procedure qualification, welder qualification and production inspection answer separate questions. Do not use base-metal yield strength as a weld-metal guarantee or select a universal welding temperature from the product name. SSAB welding guidance

SSAB's fatigue guidance explains that weld geometry, imperfections and residual stresses strongly affect welded-detail performance. Higher base-metal strength does not automatically produce a corresponding improvement in a welded structure, and reducing thickness can increase working stress. SSAB trailer-design fatigue guidance

For cyclic loading, retain the actual load spectrum, joint detail and inspection requirements. Qualify cut edges, bends, welds and final dimensions against the finished drawing. If a substitution changes thickness, material route or joint geometry, review those linked requirements together.

Ordering and source versions

Record exact D/E designation, gauge, supplied form, dimensions, surface/edge requirements, standard editions and required inspection documents. Maintain heat/coil identification through cutting and connect material records to the approved fabrication route. Resolve any galvanizing or other surface-treatment requirements with the supplier before the order rather than assuming generic compatibility.

The bending PDF prints 422-EN, V1 2026; the welding PDF prints 420-UK, V1 US Letter 2026. The live product and fatigue pages have no technical revision dates used here. Sources reviewed 2026-11-01, America/Los_Angeles; URL timestamps are not treated as printed editions.

See Grades, conditions and material selection.