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Profilé creux carré ERW haute résistance en S355J2H (ex-ST52 / St52-3). Limite d’élasticité minimale d’environ 355 MPa et traction typique 490–630 MPa — environ 50 % plus résistant que le S235. Profilés creux EN 10219. Tailles courantes d’environ 25×25 à 250×250 mm, parois d’environ 1,2 à 10 mm. Longueur standard 6 m. Pour construction, ponts, châssis machines et fabrication lourde.
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126 tailles disponibles
ST52 square hollow sections are ERW-welded to EN 10219 in grade S355J2H (legacy ST52 / St52-3). Minimum yield is about 355 MPa — roughly 50% above S235JR — so the same outer size carries more load, or a smaller section replaces a heavier S235 member.
Specify ST52 where frames, columns, crane beams, or machine structures are weight- or space-critical. Charpy impact at −20 °C (the J2 requirement) suits colder service and more demanding specifications than JR. If the job is general fabrication without a yield or impact call-out, S235JR square box is the economical default.
Standard length 6 m, quoted per length. Include size, quantity, destination, and any certificate requirement in your quote request; we confirm availability and delivered pricing.
S355J2H (ST52)
EN 10219
Acier
Profil Creux Carré S355J2H
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