1,We Manufacturing processes are primarily classified into four types:
1:Forging,
2:Casting,
3:Cutting,
4:Rolling.
2,We can manufacture in accordance with these standards.
Standards:
GB Series (Chinese Standards), JB Series (Machinery Standards), HG Series (Chemical Industry Standards), ASME B16.5 (American Standards), BS4504 (British Standards), DIN (German Standards), and JIS (Japanese Standards).
Internationally, there are two primary systems of pipe flange standards: the European system, represented by the German DIN standards (including those of the former Soviet Union), and the American system, represented by the US ANSI pipe flange standards. Other common standards include: the Chinese Ministry of Machinery Industry standards (JB series), the Ministry of Chemical Industry standards (HG series), the Chinese National Standard *GB/T 9112–9124-2010 Steel Pipe Flanges*, as well as US standards (ASME B16.5), British standards (BS4504), German standards (DIN), Japanese standards (JIS), and marine standards (CBM), among others.
The nominal pressure ratings for the PN series are designated by "PN" and comprise the following nine levels: PN2.5, PN6, PN10, PN16, PN25, PN40, PN63, PN100, and PN160.
The nominal pressure ratings for the Class series are designated by "Class" and comprise the following six levels: Class150, Class300, Class600, Class900, Class1500, and Class2500.
Flange Classification
1. **According to Chemical Industry Standards:** Flanges are classified as follows:
Plate Flat Welding Flange (PL), Necked Flat Welding Flange (SO), Necked Butt Welding Flange (WN), Integral Flange (IF), Socket Welding Flange (SW), Threaded Flange (Th), Butt Welding Ring Loose Flange (PJ/SE), Blind Flange (BL), Flat Welding Ring Loose Flange (PJ/PJ), and Lined Blind Flange (BL(s)).
2. **According to Petrochemical (SH) Industry Standards:** Flanges are classified as follows:
Threaded Flange (PL), Butt Welding Flange (WN), Flat Welding Flange (SO), Socket Welding Flange (SW), Loose Flange (LJ), and Blind Flange (no specific designation).
3. **According to Machinery (JB) Industry Standards:** Flanges are classified as follows:
Integral Flange, Butt Welding Flange, Plate Flat Welding Flange, Butt Welding Ring Plate Loose Flange, Flat Welding Ring Plate Loose Flange, Lap Joint Ring Plate Loose Flange, and Blind Flange.
4. **According to Connection Method/Type:** Flanges are classified as follows:
Plate Flat Welding Flange, Necked Flat Welding Flange, Necked Butt Welding Flange, Socket Welding Flange, Threaded Flange, Blind Flange, Necked Butt Welding Ring Loose Flange, Flat Welding Ring Loose Flange, Ring-Type Joint (RTJ) Flange and Blind Flange, Large-Diameter Plate Flange, Large-Diameter High-Neck Flange, Figure-8 Blind Plate, Butt Welding Ring Loose Flange, etc.
5. **According to the Component Being Connected:** Flanges can be classified into Vessel Flanges and Pipe Flanges.
6. **According to Structural Type:** Flanges include Integral Flanges, Threaded Flanges, Flat Welding Flanges, Butt Welding Flanges, Lap Joint (Loose/Swivel) Flanges, and Blind Flanges.
A flange—also referred to as a flange plate or rim—is a component used to connect shafts to one another, or, more commonly, to join the ends of pipes. Flanges are also utilized at the inlet and outlet ports of equipment to facilitate connections between two devices—for instance, the flange on a speed reducer. A "flange connection" or "flanged joint" refers to a detachable joint assembly comprising three interconnected elements—a flange, a gasket, and bolts—that together form a sealed structural unit. In the context of piping systems, a "pipe flange" specifically denotes a flange used for plumbing within the installation; when applied to equipment, it refers to the inlet or outlet flange of that specific device. Flanges feature a series of holes through which bolts are inserted to securely fasten the two flanges together, while a gasket placed between the flanges ensures a leak-proof seal. Flanges are broadly categorized into three types: threaded (screw-in) flanges, welded flanges, and clamp-type flanges. Flanges are invariably used in pairs; threaded flanges are suitable for low-pressure piping applications, whereas welded flanges are required for systems operating at pressures exceeding 4 kilograms per square centimeter. A sealing gasket is inserted between the two flange plates, which are then firmly secured using bolts. The thickness of a flange—as well as the specifications of the bolts used to fasten it—vary depending on the specific pressure rating required for the application. When connecting equipment such as water pumps or valves to piping systems, the corresponding connection points on these devices are often manufactured in the shape of a matching flange; this method of attachment is also referred to as a "flange connection." Generally, any connecting component that utilizes bolts to join and seal the perimeters of two flat surfaces—such as the joints in ventilation ducts—is termed a "flange"; such components may collectively be classified as "flange-type parts." However, since such a connection often constitutes merely a *portion* of a larger device—for instance, the interface between a flange and a water pump—it would be inappropriate to classify the entire water pump itself as a "flange-type part." Conversely, smaller components—such as valves—that feature such flanged interfaces may indeed be appropriately categorized as "flange-type parts."
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EN S275J0C High Manganese, Structural, Hot Rolled, Quality Steel Flange Product Information
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EN S275J0C High Manganese, Structural, Hot Rolled, Quality Steel Flange Synonyms
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EN S275J0C High Manganese, Structural, Hot Rolled, Quality Steel Product Information
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# **Product Name:** EN S275J0C Structural Steel for Cold Forming, Hot Rolled, Quality Grade
**Overview:**
EN S275J0C is a **specialized non-alloy structural steel** defined under the EN 10025-2 standard, belonging to the S275 strength category. This grade is engineered for a dual purpose: it provides **guaranteed impact toughness at 0°C (J0 quality)** while also featuring a **chemical composition optimized for superior cold formability (C designation)**. It is the ideal material for fabricating complex components through processes like press-braking, roll-forming, or stamping, where the finished part must also perform reliably in environments with temperatures at or near freezing. It is **not a "High Manganese" steel**; its premium is derived from its enhanced formability and toughness, not an elevated manganese content.
**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 & Designation Decoding:** **S275J0C**
* **S:** Structural Steel.
* **275:** Minimum yield strength in MPa (for nominal thickness ≤ 16mm).
* **J0:** Quality designation, guaranteeing impact energy at **0°C**.
* **C:** **Crucial supplementary designation** for **steels intended for cold forming**. This mandates stricter chemical composition limits.
* **Core Concept:** This is a **fabrication-oriented, dual-qualified steel**. It is not simply S275J0; the "C" requires tighter controls on phosphorus and sulphur, making it specifically suitable for aggressive cold working without cracking.
* **Clarification on "High Manganese":** This is **incorrect**. The manganese content is standard for the S275 class. The defining features are **guaranteed 0°C toughness and certified cold formability**.
* **Equivalents:** No direct global equivalent exists for the specific EN "C" classification. The closest comparison would be a **cold-forming grade of ASTM A572 Grade 40 with supplemental Charpy V-notch requirements at 32°F (0°C)**.
**Chemical Composition (Ladle Analysis, % by weight, maximum values per EN 10025-2 for 'C' grades):**
Chemistry is tailored for ductility and toughness.
* **Carbon (C):** ≤ **0.20%** (Often at the lower end of the S275 range to aid both formability and weldability).
* **Manganese (Mn):** ≤ **1.50%** (Standard for S275, not elevated).
* **Phosphorus (P):** ≤ **0.030%** (**Key Differentiator** - Tighter than the 0.035% limit for standard S275J0. Reduces cold shortness).
* **Sulphur (S):** ≤ **0.030%** (**Key Differentiator** - Tighter than the 0.035% limit for standard S275J0. Improves edge ductility and surface quality for forming).
* **Nitrogen (N):** ≤ **0.018%**.
* **Carbon Equivalent (CEV):** Typically slightly lower than standard S275J0, beneficial for welding formed components.
**Physical & Mechanical Properties (for hot-rolled condition, thickness ≤ 16mm):**
* **Yield Strength (ReH):** ≥ **275 MPa** (Minimum for t ≤ 16mm; decreases with thickness).
* **Tensile Strength (Rm):** **410 - 560 MPa**.
* **Elongation at Break (A5):** ≥ **22%** (Minimum, typically good due to favorable "C" grade chemistry).
* **Impact Energy (KV):** **≥ 27 J at 0°C** (Longitudinal, Charpy V-notch).
* **Cold Formability:** **Excellent.** The primary feature. Certified to withstand severe cold deformation (tight-radius bending, deep drawing, roll-forming) with a **significantly reduced risk of cracking** compared to the standard S275J0 grade.
* **Density:** **~7.85 g/cm³**.
* **Modulus of Elasticity:** **210 GPa**.
**Product Features:**
1. **Superior Cold Formability (Primary Feature):** The "C" chemistry ensures the material can be extensively cold-worked into complex shapes without failure, reducing scrap rates and enabling more sophisticated designs.
2. **Guaranteed Low-Temperature Toughness:** The **J0** quality provides reliable impact resistance for components that will serve in outdoor or cold storage environments (down to 0°C).
3. **Good Weldability:** Maintains good weldability. Pre-heating recommendations should be followed for thicker sections, especially after cold working which can induce residual stresses.
4. **Optimal for Fabrication Sequences:** Perfect for applications where the manufacturing process is: **Cut → Cold Form → Weld Assembly**.
**Typical Applications:**
S275J0C is specified for cold-formed components that require higher strength than S235 and must endure cold climates.
* **Commercial Vehicle & Trailer Manufacturing:** **Cold-formed structural brackets, chassis cross-members, and body reinforcements** for trucks and trailers operating in temperate climates.
* **Construction & Architecture:** **Cold-rolled profiles for purlins, girts, and structural frames** in unheated warehouses or buildings in colder regions.
* **Material Handling Equipment:** **Heavy-duty racking components, conveyor frames, and forklift parts** that are formed and used in cold storage facilities.
* **Agricultural Machinery:** **Formed structural parts and guards** for equipment used in spring/autumn conditions.
* **General Heavy Fabrication:** Any component requiring **both a high-strength cold-formed shape and certified 0°C impact toughness**.
**Available Forms & Processing:**
* **Forms:** Most commonly supplied as **hot-rolled sheet and strip** (in coils or cut lengths), and **plates**. Also available as flat bar.
* **Surface:** Often supplied as **pickled and oiled (PO)** to remove mill scale, which is critical for optimal cold forming performance, tool life, and surface finish.
* **Processing:** **Exceptionally suited for press-brake bending, roll-forming, and stamping.** Standard cutting and welding methods apply.
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**Critical Procurement Note:**
* **Must Specify "C":** It is imperative to specify the full designation **"S275J0C"**. An order for "S275J0" will result in standard material, which is more prone to cracking during aggressive forming.
* **Temperature Limit:** The J0 quality is valid for **0°C**. For service temperatures consistently below -10°C, a grade with J2 quality (e.g., **S275J2C**) should be considered.
* **Thickness-Strength Relationship:** Mechanical properties are thickness-dependent. Confirm the applicable minimum yield strength for the ordered thickness.
* **Not "High Manganese":** This term is erroneous. The correct description is **"Cold-Formable Quality Structural Steel with 0°C Toughness."**
* **Design Advantage:** Allows designers to utilize the higher strength of S275 in complex cold-formed sections, enabling weight savings or performance gains over S235J2C.
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EN S275J0C High Manganese, Structural, Hot Rolled, Quality Steel Specification
Dimensions
Size：
Diameter 20-1000 mm Length <5822 mm
Size:We can customized as required
Standard：
Per your request or drawing
We can customized as required
Properties（Theoretical）
Chemical Composition
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EN S275J0C High Manganese, Structural, Hot Rolled, Quality Steel Properties
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Applications of EN S275J0C High Manganese, Structural, Hot Rolled, Quality Steel Flange
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Chemical Identifiers EN S275J0C High Manganese, Structural, Hot Rolled, Quality Steel Flange
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Packing of EN S275J0C High Manganese, Structural, Hot Rolled, Quality Steel Flange
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Standard Packing:
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Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and Steel Flange 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 2293 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
