EN 1.0044 High Manganese Carbon Steel Flange

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." -:- For detailed product information, please contact sales. -: EN 1.0044 High Manganese Carbon Steel Flange Product Information -:- For detailed product information, please contact sales. -: EN 1.0044 High Manganese Carbon Steel Flange Synonyms -:- For detailed product information, please contact sales. -:

EN 1.0044 High Manganese Carbon Steel Product Information -:- For detailed product information, please contact sales. -: # **Technical Datasheet: EN 1.0044 (S275J0) High Manganese Carbon Steel** ## **1. PRODUCT OVERVIEW** **EN 1.0044**, commercially designated **S275J0**, is a **high manganese, non-alloy structural steel** offering enhanced strength and guaranteed impact toughness at 0°C. As part of the European EN 10025 standard series, this grade bridges the performance gap between basic S235 steels and higher-strength S355 grades, providing a **cost-effective solution** for applications requiring **improved load-bearing capacity** without the complexity of alloy steel chemistry. Characterized by its **optimized manganese-to-carbon ratio** and **aluminum-killed fine-grained structure**, S275J0 delivers reliable mechanical properties with excellent weldability and formability. The "J0" suffix indicates mandatory **Charpy V-notch impact testing at 0°C**, making it suitable for structural applications in moderate climates where occasional sub-zero temperatures may occur. This grade is typically supplied in **normalized (N) or thermomechanically rolled (TM)** conditions to ensure consistent through-thickness properties. **Key Characteristics:** - **Enhanced Strength:** Minimum 275 MPa yield strength (approximately 17% higher than S235) - **Certified Low-Temperature Toughness:** 27J minimum impact energy at 0°C - **Excellent Fabricability:** Good cold forming and welding characteristics - **Economic Efficiency:** Higher strength-to-weight ratio than S235 without alloy steel premium - **Consistent Quality:** Fine-grained microstructure ensures uniform properties --- ## **2. CHEMICAL COMPOSITION** **Compliance:** EN 10025-2:2019 - Hot rolled products of structural steels | Element | Maximum (%) | Typical Range (%) | Metallurgical Function | |---------|------------|------------------|------------------------| | **Carbon (C)** | **0.21** | 0.14-0.18 | Primary strength contributor; controlled for weldability | | **Manganese (Mn)** | **1.50** | 1.20-1.40 | **Critical strengthener**; enhances hardenability and toughness | | **Phosphorus (P)** | **0.035** | ≤0.025 | Harmful impurity; strictly limited | | **Sulfur (S)** | **0.035** | ≤0.020 | Controlled for improved hot workability | | **Silicon (Si)** | **0.55** | 0.25-0.45 | Deoxidizer; solid solution strengthener | | **Nitrogen (N)** | **0.012** | ≤0.009 | Controlled to prevent aging effects | | **Aluminum, total (Alt)** | — | **≥0.020** (min) | Grain refiner; ensures fine-grained structure | | **Copper (Cu)** *optional* | 0.55 | 0.20-0.35 | May be added for weathering resistance (S275J0W variant) | | **Iron (Fe)** | Balance | Balance | Base metal | **Critical Chemical Parameters:** - **Carbon Equivalent (CEV):** 0.36-0.42% (CEV = C + Mn/6) - **Cracking Parameter (Pcm):** 0.20-0.24% (Pcm = C + Si/30 + Mn/20 + Cu/20 + Ni/60 + Mo/15 + V/10 + 5B) - **Deoxidation Practice:** Fully aluminum-killed, fine-grained steel - **Manganese-to-Carbon Ratio:** Typically 7:1 to 8:1, optimizing strength-toughness balance --- ## **3. PHYSICAL & MECHANICAL PROPERTIES** ### **A. Physical Properties (Typical):** - **Density:** 7.85 g/cm³ - **Modulus of Elasticity (E):** 210 GPa - **Shear Modulus (G):** 81 GPa - **Poisson's Ratio (ν):** 0.30 - **Coefficient of Thermal Expansion:** 12.0 × 10⁻⁶/K (20-100°C) - **Thermal Conductivity:** 50 W/(m·K) at 20°C - **Specific Heat Capacity:** 450 J/(kg·K) - **Electrical Resistivity:** 0.15 μΩ·m ### **B. Standard Mechanical Properties (EN 10025-2):** *Properties vary with product thickness. Values shown for t ≤ 16 mm.* | Property | Symbol | Minimum Value | Test Standard | Condition | |----------|--------|---------------|---------------|-----------| | **Yield Strength** | ReH | **275 MPa** | EN ISO 6892-1 | t ≤ 16 mm | | **Tensile Strength** | Rm | **370-530 MPa** | EN ISO 6892-1 | Must fall within range | | **Minimum Elongation** | A₅ | **22%** | EN ISO 6892-1 | t ≤ 40 mm | | **Impact Energy (0°C)** | KV | **27 J** | EN ISO 148-1 | Longitudinal | ### **C. Thickness-Dependent Properties:** | Thickness Range (mm) | Yield Strength Min (MPa) | Tensile Strength Range (MPa) | Impact Test Requirement | |----------------------|--------------------------|------------------------------|--------------------------| | **t ≤ 16** | 275 | 370-530 | Mandatory at 0°C | | **16 < t ≤ 40** | 265 | 370-530 | Mandatory at 0°C | | **40 < t ≤ 63** | 255 | 360-520 | Mandatory at 0°C | | **63 < t ≤ 80** | 245 | 360-520 | Mandatory at 0°C | | **80 < t ≤ 100** | 235 | 350-510 | Mandatory at 0°C | ### **D. Typical Achieved Properties (t ≤ 40 mm):** | Property | Typical Range | Average | Notes | |----------|---------------|---------|-------| | **Yield Strength** | 285-330 MPa | 305 MPa | Typically 10-20% above minimum | | **Tensile Strength** | 390-460 MPa | 425 MPa | Well within specified range | | **Elongation (A₅)** | 24-30% | 27% | Good ductility maintained | | **Impact Energy (0°C)** | 35-70 J | 50 J | Substantial safety margin | | **Hardness (HB)** | 125-145 | 135 | Balanced for machining | | **Bend Test** | d=2a to 3a | Pass | Depends on rolling direction | --- ## **4. FABRICATION & PROCESSING** ### **A. Forming & Cutting:** - **Cold Bending:** Minimum inside radius = **1.0 × t** (parallel to rolling), **1.5 × t** (perpendicular) - **Hot Forming:** Can be heated to 850-1100°C if required for severe forming - **Cutting Methods:** - Plasma/Laser: Excellent results with proper parameters - Oxy-fuel: Requires care due to higher manganese content - Waterjet: Ideal for complex shapes without thermal effects - Mechanical: Band saws with appropriate blade selection ### **B. Welding Procedures:** **General Guidelines:** - **Preheating:** Recommended for t > 25 mm or highly restrained joints (50-100°C) - **Interpass Temperature:** Maximum 200-250°C - **Heat Input:** 0.8-2.5 kJ/mm for optimal properties **Recommended Consumables:** | Process | Consumable (EN ISO) | AWS Equivalent | Notes | |---------|---------------------|----------------|-------| | **SMAW** | E 42 0 R C 12 | E7018 | Basic coated for toughness | | **GMAW** | G 46 5 M G3Si1 | ER70S-6 | Most common for fabrication | | **FCAW** | T 46 2 P C 1 H5 | E71T-1 | Good for outdoor work | | **SAW** | S 46 2 + basic flux | F7A2-EM12K | For thicker sections | **Welding Characteristics:** - **Weldability Rating:** Good (CEV typically 0.38-0.42) - **HAZ Toughness:** Generally good with proper heat input control - **Crack Sensitivity:** Low with correct procedures ### **C. Machining Parameters:** - **Turning:** 100-150 m/min, feed 0.2-0.4 mm/rev - **Milling:** 80-120 m/min, feed 0.15-0.3 mm/tooth - **Drilling:** 25-40 m/min with peck cycles - **Surface Finish:** Ra 3.2-6.3 μm readily achievable --- ## **5. TYPICAL APPLICATIONS** ### **A. Building & Construction:** - **Medium-Rise Structures:** Columns, beams, and bracing in commercial buildings - **Industrial Buildings:** Portal frames, crane runway beams, mezzanine structures - **Bridges:** Secondary members, deck plating, pedestrian bridges - **Storage Facilities:** Rack-supported buildings, warehouse structures ### **B. Infrastructure Projects:** - **Transportation:** Railway station structures, canopy supports, sign gantries - **Energy Sector:** Wind turbine towers (lower sections), transformer supports - **Water Management:** Gate structures, pumping station buildings, pipe supports - **Communication:** Tower structures, equipment shelters, antenna mounts ### **C. Industrial Equipment:** - **Material Handling:** Conveyor structures, hoist frames, lifting equipment - **Processing Plants:** Platform structures, walkways, equipment supports - **Agricultural Machinery:** Tractor frames, implement supports, storage tanks - **Mining Equipment:** Support structures, access platforms, equipment bases ### **D. Special Applications:** - **Mobile Equipment:** Trailer frames, vehicle chassis components - **Marine Structures:** Small vessel construction, dock equipment - **Temporary Structures:** Heavy-duty scaffolding, formwork systems - **Urban Infrastructure:** Footbridges, public furniture, lighting columns --- ## **6. INTERNATIONAL STANDARDS & EQUIVALENTS** ### **Primary Designations:** - **EN Standard:** EN 10025-2:2019 - **Material Number:** 1.0044 - **Steel Name:** S275J0 - **Former Designation:** Fe 430 B (EN 10025:1990) ### **Global Equivalents:** | Country/Standard | Equivalent Grade | Key Comparison Notes | |-----------------|------------------|----------------------| | **ISO** | ISO 630-2: E275B | Nearly identical specifications | | **USA (ASTM)** | ASTM A572 Gr. 42 | Similar yield strength (290 MPa) | | **USA (ASTM)** | ASTM A529 Gr. 55 | Higher strength but similar application | | **Germany (DIN)** | DIN EN 10025-2: S275J0 | Direct adoption | | **UK (BS)** | BS 4360: 43B | Historical equivalent | | **Japan (JIS)** | JIS G3106: SM490A | Slightly higher strength (325 MPa) | | **China (GB)** | GB/T 700: Q275B | Similar strength with 20°C impact | | **Australia** | AS/NZS 3678: 300L0 | 300 MPa yield with 0°C impact | ### **Comparison within EN 10025 Structural Steels:** | Grade | Yield Strength (MPa) | Impact Test | Typical CEV | Relative Cost | |-------|---------------------|-------------|-------------|---------------| | **S235J0** | 235 | 0°C | 0.34-0.38 | Base | | **S275J0** | **275** | **0°C** | **0.38-0.42** | **+10-15%** | | **S355J0** | 355 | 0°C | 0.40-0.45 | +25-35% | | **S275JR** | 275 | +20°C (opt) | 0.38-0.42 | +5-8% | --- ## **7. QUALITY ASSURANCE & TESTING** ### **Mandatory Testing (EN 10025-2):** 1. **Tensile Test:** One per batch ≤ 40 tonnes 2. **Impact Test:** One set (3 specimens) at 0°C per batch 3. **Bend Test:** If specified in purchase order 4. **Visual Inspection:** Surface quality per standard requirements ### **Additional Testing Options:** - **Ultrasonic Testing:** For critical applications (quality classes S1-S4) - **Through-Thickness Testing:** Z15 or Z25 quality if required - **Hardness Testing:** Multiple location verification - **Chemical Analysis:** Full spectrographic report ### **Certification:** - **EN 10204 3.1 Certificate:** Standard delivery - **3.2 Certificate:** Available with independent verification - **Traceability:** Heat number maintained throughout supply chain --- ## **8. DESIGN CONSIDERATIONS** ### **Advantages:** 1. **Improved Load Capacity:** 17% higher yield strength than S235J0 2. **Weight Reduction Potential:** Can reduce section sizes compared to S235 3. **Economic Optimization:** Better strength-to-cost ratio than S355 for many applications 4. **Code Acceptance:** Widely recognized in international design codes 5. **Fabrication Friendly:** Good balance of strength and workability ### **Limitations:** - **Not for Severe Environments:** Not suitable for sustained service below -20°C - **Thickness Limitations:** Strength reduction in thicker sections - **Availability:** Less commonly stocked than S235 or S355 grades - **Design Experience:** Fewer historical data than more common grades ### **Design Recommendations:** 1. **Consider when:** Moderate strength increase is needed but S355 is excessive 2. **Evaluate alternatives:** Compare weight savings vs. material cost premium 3. **Check availability:** Confirm local stock before specification 4. **Verify weld procedures:** Ensure fabricator experience with this grade ### **Specification Example:** "EN 10025-2 S275J0+N, thickness 12 mm, normalized condition, with EN 10204 3.1 certificate including impact test results at 0°C." --- ## **9. ENVIRONMENTAL & SUSTAINABILITY** ### **Corrosion Protection:** - **Painting:** Standard epoxy or polyurethane systems - **Galvanizing:** Good suitability for hot-dip galvanizing - **Weathering Steel:** S275J0W variant available with 0.20-0.55% Cu ### **Recyclability:** - **Recycling Rate:** >95% typical - **Embodied Carbon:** Approximately 1.9-2.3 tCO₂/t steel - **Environmental Impact:** Lower than alloy steels due to simpler chemistry ### **Life Cycle Performance:** - **Design Life:** 25-50 years with proper maintenance - **Maintenance Requirements:** Similar to other carbon steels - **End-of-Life Value:** High scrap value due to simple chemistry --- ## **10. TECHNICAL SUMMARY** **EN 1.0044 (S275J0)** represents an **optimized intermediate-grade structural steel** that fills an important niche between the ubiquitous S235 and high-strength S355 grades. Its **balanced combination** of enhanced strength, certified low-temperature toughness, and good fabricability makes it an intelligent choice for engineers seeking to optimize structural designs without resorting to alloy steels. **Market Position:** S275J0 occupies approximately 15-20% of the European structural steel market, primarily in applications where S235 lacks sufficient strength but S355 provides unnecessary capacity. Its use is particularly common in: - Medium-span building structures - Industrial facilities with moderate loading - Infrastructure projects with weight/strength optimization requirements - Applications requiring certified toughness at moderate temperatures **Future Trends:** Increasing emphasis on material efficiency and sustainable construction is expected to drive greater utilization of intermediate-strength grades like S275J0, as they offer improved performance without the environmental impact of alloy steel production. **Selection Guidance:** - **Choose S275J0 over S235J0 when:** Load requirements exceed S235 capacity, weight reduction is beneficial, or material cost increase is justified by overall project savings - **Choose S355J0 over S275J0 when:** Higher strength-to-weight ratio is critical, design loads are significantly higher, or project specifications mandate minimum S355 - **Consider project-specific factors:** Availability, fabricator experience, connection design requirements, and total project economics --- **Important Notice:** This technical information is based on standard specifications and typical industry data. For specific applications: 1. Always consult the latest edition of EN 10025-2 2. Review actual mill test certificates for supplied material 3. Consider project-specific conditions and requirements 4. Engage qualified engineering professionals for critical applications 5. Verify local availability and supply chain considerations before specification -:- For detailed product information, please contact sales. -: EN 1.0044 High Manganese Carbon Steel Specification Dimensions Size： Diameter 20-1000 mm Length <5787 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 1.0044 High Manganese Carbon Steel Properties -:- For detailed product information, please contact sales. -:

Applications of EN 1.0044 High Manganese Carbon Steel Flange -:- For detailed product information, please contact sales. -: Chemical Identifiers EN 1.0044 High Manganese Carbon Steel Flange -:- For detailed product information, please contact sales. -:

Packing of EN 1.0044 High Manganese Carbon Steel Flange -:- 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 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 2258 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