EN S235J2G3 High Manganese, Quality Steel Tube,Pipe

EN S235J2G3 High Manganese, Structural, Hot Rolled, Quality Steel Tube Product Information -:- For detailed product information, please contact sales. -: EN S235J2G3 High Manganese, Structural, Hot Rolled, Quality Steel Tube Synonyms -:- For detailed product information, please contact sales. -:

EN S235J2G3 High Manganese, Structural, Hot Rolled, Quality Steel Product Information -:- For detailed product information, please contact sales. -: **Product Name:** EN S235J2G3 Structural Steel, Hot Rolled, Quality Grade **Overview:** EN S235J2G3 is a **non-alloy structural steel** specified under the European standard EN 10025-2, belonging to the S235 strength category. The designation indicates a material with **guaranteed impact toughness at -20°C (J2)** and supplied in the **"G3" delivery condition**, which specifically denotes **normalized or normalized rolled steel**. While it offers reliable toughness for low-temperature service, it is **not technically classified as a "High Manganese" steel**. Its manganese content is standard for the S235 grade. This steel is engineered for welded, bolted, and riveted structures where enhanced low-temperature toughness and a normalized, homogeneous microstructure are required for critical applications. **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 & Condition Designation:** **S235J2G3** * **S:** Structural Steel. * **235:** Minimum yield strength in MPa (for thickness ≤ 16mm). * **J2:** Quality designation, indicating impact energy testing at **-20°C**. * **G3:** Supplementary designation for the **delivery condition**. "G3" specifically means the product is supplied in the **normalized or normalized rolled condition**. This is a key differentiator from standard as-rolled (AR) S235J2. * **Clarification on "High Manganese":** This is a misnomer for this grade. S235J2G3 is a **standard non-alloy quality steel** with a standard manganese range. The "G3" condition (normalizing) is its defining processing feature, not a high manganese content. * **Equivalents & Context:** The closest equivalent in other systems would be a **normalized A36 steel with supplemental Charpy V-notch requirements at -20°F (~-29°C)**, though no direct designation exists. The "G3" condition aligns it more closely with the intent of steels for critical applications. **Chemical Composition (Ladle Analysis, % by weight, maximum values per EN 10025-2):** Standard composition for S235, controlled for weldability. * **Carbon (C):** ≤ **0.17%** * **Manganese (Mn):** ≤ **1.40%** (Standard range, not elevated). * **Phosphorus (P):** ≤ **0.035%** * **Sulphur (S):** ≤ **0.035%** * **Nitrogen (N):** ≤ **0.012%** (for killed steel, which is typical for normalized delivery). * **Silicon (Si):** Typically present as a result of the killing process for normalized steel. **Physical & Mechanical Properties (for normalized 'G3' condition, thickness ≤ 16mm):** The normalized condition provides a more uniform and refined grain structure compared to as-rolled material. * **Yield Strength (ReH):** ≥ **235 MPa** (Minimum, thickness-dependent. Normalizing may result in a yield strength at the lower end of the permissible range). * **Tensile Strength (Rm):** **360 - 510 MPa**. * **Elongation at Break (A5):** ≥ **26%** (Minimum, longitudinal test piece). * **Impact Energy (KV):** **≥ 27 J at -20°C** (Longitudinal, Charpy V-notch). This is the core property of the J2 quality. The normalized condition ensures consistent toughness through the thickness. * **Microstructure:** Equiaxed, fine-grained ferrite-pearlite structure resulting from the normalizing heat treatment, leading to more isotropic properties. * **Density:** **~7.85 g/cm³**. * **Modulus of Elasticity:** **210 GPa**. **Product Features:** 1. **Guaranteed Low-Temperature Toughness:** The **J2** quality ensures reliable impact resistance down to **-20°C**, making it suitable for structures exposed to cold climates, such as outdoor bridges, pylons, and storage facilities. 2. **Normalized Delivery Condition (G3):** This heat treatment refines the grain structure, improves uniformity of mechanical properties through the cross-section, relieves internal stresses from rolling, and enhances overall toughness and ductility. It provides more predictable fabrication behavior, especially for welding. 3. **Excellent Weldability:** Very low carbon content ensures excellent weldability with all common processes. The normalized condition can also simplify post-weld heat treatment (PWHT) considerations. 4. **Homogeneous Properties:** Ideal for critical components where consistent performance in all directions is required. **Typical Applications:** S235J2G3 is specified for structural applications where service temperatures may fall to -20°C and where material homogeneity is valued. * **Critical Structural Components:** Parts of **transmission towers, communication masts, and light bridges** in cold regions. * **Offshore & Maritime Accessories:** **Staircases, platforms, and secondary structures** on offshore installations and ships where -20°C toughness is specified. * **Cold Storage & Logistics:** **Supporting structures and frames** for large cold storage warehouses or facilities in alpine environments. * **General Engineering:** **Critical brackets, machine frames, and lifting attachments** that require verified low-temperature performance and a normalized condition for dimensional stability. **Available Forms & Processing:** * **Forms:** Typically supplied as **normalized plates** and **sections** (like beams and channels). The G3 condition is most relevant for thicker plates where the benefits of normalizing are most pronounced. * **Surface:** Usually with mill scale from the normalizing furnace. * **Processing:** Excellent for cutting and welding. The normalized condition may result in slightly different machining characteristics compared to as-rolled steel. Cold forming is possible but with awareness of the normalized structure. --- **Procurement & Specification Note:** It is essential to specify the **full and correct designation "S235J2G3"**. Omitting "G3" will result in supply of standard as-rolled material, which may not have the same through-thickness homogeneity and stress state. The term **"High Manganese" is incorrect for this grade**. Its key features are **impact toughness at -20°C (J2)** and the **normalized delivery condition (G3)**. For applications requiring higher strength at low temperatures, grades like **S355J2** or **S355K2** should be considered. Mechanical properties are thickness-dependent, and the applicable values for the ordered thickness must be confirmed. -:- For detailed product information, please contact sales. -: EN S235J2G3 High Manganese, Structural, Hot Rolled, Quality Steel Specification Dimensions Size： Diameter 20-1000 mm Length <5807 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 S235J2G3 High Manganese, Structural, Hot Rolled, Quality Steel Properties -:- For detailed product information, please contact sales. -:

Applications of EN S235J2G3 High Manganese, Structural, Hot Rolled, Quality Steel Tube -:- For detailed product information, please contact sales. -: Chemical Identifiers EN S235J2G3 High Manganese, Structural, Hot Rolled, Quality Steel Tube -:- For detailed product information, please contact sales. -:

Packing of EN S235J2G3 High Manganese, Structural, Hot Rolled, Quality Steel Tube -:- 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 Tube 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 2278 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