DIN 17102 StE255 Steel Plate | StE255 Fine Grain Steel supplier

DIN 17102 StE255, also written StE 255, STE255, DIN17102 StE255 and StE255 steel plate, is a weldable normalized fine-grain structural steel under DIN 17102. The standard covers hot-rolled flats, plates, wide flats, sections and bars with minimum yield strengths from 255 MPa to 500 MPa in the lowest thickness band. StE255 is the lowest strength line in that book. StE means the basic / room-temperature quality. It is not WStE255, not TStE255 and not EStE255. SHH STEEL is a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin) for this grade. Plate is produced to DIN 17102 and shipped to buyers in the USA, Europe, Middle East and Southeast Asia.

A purchase order that only says “255 fine grain” or “StE255 equivalent to S275” is incomplete. Write DIN 17102 StE255. Do not treat StE255 as StE285. StE285 is the next strength step and is the grade usually compared with P275N. StE255 sits below that step.

DIN 17102 is a legacy specification. New European work usually names S275N / S275NL under EN 10025-3 or P275N / P275NH / P275NL1 under EN 10028-3. Those modern names line up more cleanly with StE285, not StE255. Replacement projects still name StE255 when an old German calculation or mill qualification stays on DIN.

This page is not DIN 17100 St37-2. DIN 17100 is ordinary structural steel. DIN 17102 is fine-grain, killed, normally normalized. This page is not SA516 Gr.60 and not SA516 Gr.70. It is not ASTM A36 steel plate. It is not QT alloy under ASME SA387 or ASME SA543.

Company scope: global steel mill sourcing partner – SHH STEEL.

This plate sits in structural steel plates and high strength low alloy plates. Vessel comparisons belong next to pressure vessel steel plates and ASME SA516, not as automatic substitutes.

DIN 17102 StE255 / StE 255 uses a lower manganese band than the 355 family.

Heat Analysis — DIN 17102 StE255 (typical cast / ladle limits)

StE355 manganese is 0.90–1.65 and vanadium is listed. StE255 manganese starts at 0.50 and the microalloy cap is lower. Do not ship a 355 heat as StE255 because a coupon came in low. TStE255 and EStE255 tighten P and S. SHH STEEL reports heat analysis on every certificate and product analysis when the order names it. If a Houston, Rotterdam or Jebel Ali specification tightens P and S, write that on the order.

Yield starts at 255 MPa in the lowest thickness band and falls as thickness rises. Tensile is lower than the 355 family.

Tensile and Yield — DIN 17102 StE255 (typical published idea)

Yield and tensile both step down with thickness, the same way StE355 does at a higher level. Confirm the ordered thickness against the named edition of DIN 17102. Do not quote 255 MPa yield on a thick plate without reading the thickness column. Do not treat 360–480 MPa tensile as permission to stamp SA516 Gr.55, SA285 Gr.A or SA662 Gr.A.

Impact is the reason buyers pick DIN 17102 instead of DIN 17100. StE255 is the basic quality. If the drawing names −20 °C or −50 °C, the order may actually need TStE255 or EStE255. Write the test temperature, orientation and energy on the purchase order.

Same 255 MPa yield idea. Different impact and, on T/E, tighter residuals. SHH STEEL will not ship StE255 against a TStE255 impact temperature without a written change.

SA203 Gr.A, SA299 Gr.A and SA737 Gr.B are vessel or HSLA plates. None of them is StE255.

DIN 17102 StE255 / StE 255 is selected when the drawing wants fine-grain, weldable, normalized plate at the lowest DIN 17102 yield step: lighter welded structures, tanks, machinery frames and other work still calculated to the old German book. It is not a high-strength substitute for StE355. It is not automatically a Section VIII plate. If the vessel is ASME, the drawing should name an ASME or ASTM grade such as SA516 Gr.60, SA285 Gr.B or SA537 Cl.1.

SHH STEEL supplies this plate to fabricators in the United States, Europe, the Middle East and Southeast Asia. It is not nickel low-temp plate like SA203 Gr.D or SA203 Gr.E. It is not QT Ni-Cr-Mo like SA543 Type B Cl.1. It is not Cr-Mo like SA387 Gr.22 Cl.2. Stainless inquiries belong on ASME SA240 or ASTM A240.

StE255 is killed fine-grain C-Mn steel at the lowest strength step in this book. Welding is production welding, and Code welding when the equipment is a vessel.

Qualify procedures to the applicable code. For ASME work that happens to use a dual-named plate, use ASME Section IX. Consumables should match the 360–480 MPa tensile band, not a SA387 Gr.12 Cl.2 Cr-Mo procedure and not a QT procedure from SA517 Gr.F. Preheat follows thickness and hydrogen control. The fabricator owns the WPS. SHH STEEL can share mill heat data for that review.

Usual delivery from SHH STEEL is normalized DIN 17102 StE255 / StE 255 plate. Fine-grain practice and normalize are the product idea. As-rolled shipment is a special agreement, not the default for this page.

If the vessel or structure will see PWHT, test coupons shall follow a simulated cycle when the order names it. This is not the QT route used on SA738 Gr.A or SA737 Gr.B. Special heat treatment, extra simulation or third-party hold points add time. Plan about two months when those extras are on the order.

The certificate lists DIN 17102 StE255 (and StE 255 if requested); heat number; heat analysis; product analysis when ordered; tensile results to the correct thickness column; normalize statement; impact when ordered. Certificates may be EN 10204 3.1 or EN 10204 3.2. Dual marking to an EN name is available only when chemistry, tensile and impact all fit that EN edition. Do not assume S275N / P275N dual marking; those names sit closer to StE285.

Usual supply range from SHH STEEL for StE255 fine grain steel:

• Thickness: commonly 6 mm – 150 mm. Confirm any request above 150 mm against mill capability
• Width: 1500 mm – 4000 mm
• Length: 3000 mm – 12000 mm
• Cut-to-length plates and nest sizes inside those limits

Ship plate inquiries belong on shipbuilding steel plates or BV Rules. Weathering plate belongs on EN 10025-5 or Corten A/B. TMCP fine-grain structural belongs on EN 10025-4. QT structural belongs on EN 10025-6. Ordinary structural belongs on EN 10025-2 or JIS G3106.

Dimensional limits follow the mill rolling standard named on the order, commonly EN 10029 for plate when the buyer is in Europe. Do not apply ASTM A36/A36M structural tolerances to a DIN fine-grain plate without writing them. UT to EN 10160 or ASTM A435 / A577 / A578 is added when the order names it.

Most export DIN 17102 StE255 / StE 255 orders add extras. SHH STEEL does not assume them.

Charpy details. Temperature, energy, location and orientation. If the temperature is −40 °C or −50 °C, confirm whether the grade should be TStE255 or EStE255.

Simulated PWHT. When the equipment will be stress-relieved.

NDE. UT per the named method.

Z-direction / through-thickness testing. When the drawing names Z15 / Z25 / Z35.

Third-party. EN 10204 3.2, with inspectors arranged for US, European or Middle East documentation packages.

These names are project-comparison grades. They are not automatic substitutes.

ASME SA515 and ASME SA662 are not StE255.

Stainless inquiries belong on stainless steel products, JIS G4305 or AISI stainless. Other vessel comparisons: SA203 Gr.B, SA302 Gr.A, A516 Grade 60, SA533 Type C Cl.2, SA517 Gr.P.

SHH STEEL is a global steel mill sourcing partner with mill partnerships in China. We supply ASTM, ASME, EN, DIN and JIS steel to the USA, Europe, Middle East and Southeast Asia. Origin is mill-direct, China origin. We do not treat DIN 17102 StE255 as an Asia-only stock item. Inquiry packages are written for fabricators and EPC buyers in Houston, Rotterdam, Antwerp, Jebel Ali, Dammam, Singapore and surrounding ports.

Typical trade terms:

• FOB Shanghai
• CIF Houston
• CIF Rotterdam
• CIF Jebel Ali
• Other CIF / CFR ports on request (Los Angeles, New York, Hamburg, Genoa, Jeddah, Mundra, Ho Chi Minh)

Typical lead time for DIN 17102 StE255 / StE 255:

• Ex-stock / ready plate: about 5–7 days after order confirmation, subject to actual warehouse size and cutting
• Mill rolling, standard normalize: about 45 days
• Special heat treatment, simulated PWHT, 3.2 hold or extra NDE: about 2 months

Documents travel with the cargo: mill certificate, packing list, commercial invoice, bill of lading, and EN 10204 3.1 or 3.2 as ordered. Third-party inspection can be arranged before loading for US, European or Middle East projects. Packing is seaworthy, with edge protection and marking in English as specified on the order.

If the buyer actually needs StE285 / P275N, say so on the inquiry. Do not assume a domestic Chinese certificate format will pass at destination.

SHH STEEL is a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin). We supply ASTM / ASME / EN / DIN / JIS steel to the USA, Europe, the Middle East and Southeast Asia. On DIN 17102 StE255 / StE 255 that means mill pricing, StE255 chemistry reported, recorded normalize, tensile results to the correct thickness column, 255 MPa yield in the lowest band, 3.1 as standard and 3.2 when specified. Trade terms include FOB Shanghai and CIF Houston / Rotterdam / Jebel Ali.

We keep the grade on the order. StE255 is not StE285. StE255 is not StE355. StE255 is not TStE255. DIN 17102 is not DIN 17100. StE255 is not SA516 Gr.70. StE255 is not SA387 Gr.22 Cl.2. If the drawing names 355 MPa, we will not ship StE255 and call it close.

Company scope: global steel mill sourcing partner – SHH STEEL.

DIN 17102 StE255 Steel Plate, also searched as StE 255, STE255 and DIN17102 StE255, is weldable normalized fine-grain steel under DIN 17102 at the lowest strength step in that book, 255 MPa yield in the lowest thickness band and typically 360–480 MPa tensile. Whether the inquiry says DIN 17102 StE255, StE 255 or StE255 steel plate, SHH STEEL as a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin) supplies plate with StE255 chemistry, recorded normalize, and EN 10204 3.1 or 3.2 certification.

SHH STEEL supplies DIN 17102 StE255 / StE255 Fine Grain Steel to the USA, Europe, the Middle East and Southeast Asia for work that actually names this grade. FOB Shanghai / CIF Houston / Rotterdam / Jebel Ali.

Contact SHH STEEL for mill rolling, stock inquiry, impact testing, 3.2 inspection or a quotation.

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