EN 1.0145 Structural, Quality Steel Sheet,Plate

EN 1.0145 Structural, Hot Rolled, Quality Steel Sheet/Plate, t 200-250 mm Product Information -:- For detailed product information, please contact sales. -: EN 1.0145 Structural, Hot Rolled, Quality Steel Sheet/Plate, t 200-250 mm Synonyms -:- For detailed product information, please contact sales. -:

EN 1.0145 Structural, Hot Rolled, Quality Steel, t 200-250 mm Product Information -:- For detailed product information, please contact sales. -: **Product Name:** EN 1.0145 (S275) Structural Steel, Hot Rolled, Quality Grade, t=200-250 mm **Overview:** EN 1.0145 is a non-alloy, **high-manganese quality structural steel** specified under the EN 10025-2 standard, corresponding to grade **S275**. Supplied in the hot-rolled condition, it is characterized by a higher manganese-to-carbon ratio, offering enhanced strength and toughness compared to standard S235 grades. This product is available in ultra-heavy plate thicknesses from **200 to 250 mm**, designed for the most demanding structural applications where high load-bearing capacity, integrity, and reliability in massive sections are critical. **Key International Standards:** * **Primary Standard:** **EN 10025-2:2019** - Hot rolled products of structural steels - Part 2: Technical delivery conditions for non-alloy structural steels. * **Grade & Quality:** Steel Grade **S275**. For thick plates (t=200-250 mm), the required impact toughness must be explicitly specified. Common quality designations are **J0** (impact tested at 0°C) or **J2** (impact tested at -20°C) to ensure performance. * **Important Note:** For this extreme thickness range, the standard **allows for a reduction in minimum mechanical properties**. The values stated below are the nominal minimums for thinner sections; the guaranteed values for 200-250 mm plate must be **contractually agreed upon between supplier and customer** based on mill capability and the relevant clauses of EN 10025-2 (Annex D). * **Comparable Standards:** ASTM A572 Grade 50 (in terms of strength application, not chemistry), JIS SM490. **Chemical Composition (Ladle Analysis, % by weight, max. unless stated as range):** The high manganese content is essential for achieving strength and hardenability in thick sections. * **Carbon (C):** ≤ 0.21% * **Manganese (Mn):** ≤ 1.50% * For this thickness range, a minimum content is crucial. Typically, Mn ≥ 1.00% is required as per standard rules for thicknesses > 40mm. * **Phosphorus (P):** ≤ 0.035% (Often tighter for quality thick plate) * **Sulphur (S):** ≤ 0.035% (Often tighter for improved internal soundness) * **Nitrogen (N):** ≤ 0.014% * **Silicon (Si):** Typically 0.10% - 0.40% (Fully killed steel is mandatory for such thicknesses to ensure homogeneity). * **Carbon Equivalent (CET):** Will be calculated and controlled to ensure weldability. Typically CET ≤ 0.40% for preheat/weldability assessments. **Physical & Mechanical Properties (Typical for Hot-Rolled/Normalized Condition, t=200-250mm):** * **Yield Strength (ReH):** **≥ 255 MPa** (Important: This is an estimated/typical minimum for this thickness range. The standard nominal min. is 275 MPa for t≤40mm, but a reduction of ~20 MPa or more is permissible for 200-250mm. Exact guaranteed value must be confirmed upon order). * **Tensile Strength (Rm):** **410 - 560 MPa** (The range remains valid, but the lower end is more typical for thick sections). * **Elongation at Break (A5):** **≥ 20%** (Minimum, may be reduced from the nominal 22% due to thickness). * **Impact Energy (KV):** Critical property for thick plate. Must be specified (e.g., **J0: ≥ 27 J at 0°C**). Testing is usually performed at 1/4 thickness from a rolled surface. Higher quality (J2, K2) may be required for low-temperature service. * **Through-Thickness Properties (Z-direction):** **Can be specified** (e.g., EN 10164, quality level Z25 or Z35) to prevent lamellar tearing in highly constrained welded joints. **Highly recommended for critical applications.** * **Density:** 7.85 g/cm³. * **Modulus of Elasticity:** 210 GPa. **Product Features for Thick Plate Application:** 1. **High Load-Bearing Capacity:** Provides the core strength for massive structural components. 2. **Guaranteed Through-Thickness Integrity:** Manufactured with strict controls (killing, conditioning) to ensure sound internal structure, verified by ultrasonic testing (UT) per EN 10160 or SE 1716. 3. **Enhanced Toughness:** The high manganese content and controlled rolling/heat treatment ensure adequate fracture toughness even in the core of the thick plate. 4. **Weldability (with Procedure):** Despite the thickness, the controlled chemistry allows welding, but it requires **strictly qualified procedures** including pre-heating, controlled heat input, and post-weld heat treatment (PWHT) as per EN 1011 to manage residual stresses and microstructural changes. 5. **Machinability & Formability:** Can be machined and formed, though power requirements are high. **Typical Applications for 200-250 mm Plate:** * **Heavy Civil Engineering:** Critical nodes and chords in **offshore jacket foundations**, legs of **heavy-lift crane bases**, and anchor blocks for **long-span bridges and suspension bridges**. * **Power Generation:** **Hydropower turbine housings**, structural supports in **nuclear and thermal power plants**, and massive bases for **wind turbine transition pieces**. * **Shipbuilding & Offshore:** **Rudder stocks, stern frames, and keels** for large vessels; critical sections of **FPSO hulls** and **semi-submersible platform columns**. * **Press & Machinery:** **Frames and platens for giant forging presses, injection molding machines**, and heavy mill housings in metalworking industries. * **Defense:** Structural components for specialized heavy equipment. **Available Forms & Quality Supplements:** * **Form:** Hot-rolled, normalized, or thermomechanically rolled (TM) steel plates (normalizing is typical for this thickness). * **Thickness Range:** 200 mm to 250 mm. * **Width & Length:** As per mill capability, often up to 4000mm+ in width. * **Mandatory Tests:** Full suite of mechanical tests (tensile, impact at specified temperature) from defined locations within the plate thickness. **Ultrasonic Testing (UT)** is standard for quality assurance. * **Optional/Specified:** Through-thickness testing (Z-quality), Charpy testing at multiple locations and orientations, increased toughness quality (J2/K2). -:- For detailed product information, please contact sales. -: EN 1.0145 Structural, Hot Rolled, Quality Steel, t 200-250 mm Specification Dimensions Size： Diameter 20-1000 mm Length <5798 mm Size:We can customized as required Standard： Per your request or drawing We can customized as required Properties（Theoretical） Chemical Composition -:- For detailed product information, please contact sales. -: EN 1.0145 Structural, Hot Rolled, Quality Steel, t 200-250 mm Properties -:- For detailed product information, please contact sales. -:

Applications of EN 1.0145 Structural, Hot Rolled, Quality Steel Sheet,Plate, t 200-250 mm -:- For detailed product information, please contact sales. -: Chemical Identifiers EN 1.0145 Structural, Hot Rolled, Quality Steel Sheet,Plate, t 200-250 mm -:- For detailed product information, please contact sales. -:

Packing of EN 1.0145 Structural, Hot Rolled, Quality Steel Sheet/Plate, t 200-250 mm -:- For detailed product information, please contact sales. -: Standard Packing: -:- For detailed product information, please contact sales. -: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and Steel Sheet/Plate drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 2269 gallon liquid totes Special package is available on request. E FORUs’ is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition