Bethlehem Steel Flange Mayari R60, 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. -: Bethlehem Steel Flange Mayari R60 3/16 to 4 in. thick, Steel Flange plate Product Information -:- For detailed product information, please contact sales. -: Bethlehem Steel Flange Mayari R60 3/16 to 4 in. thick, Steel Flange plate Synonyms -:- For detailed product information, please contact sales. -:

Bethlehem Steel Mayari R60 3/16 to 4 in. thick, steel plate Product Information -:- For detailed product information, please contact sales. -: ## **Product Specification: Bethlehem Steel Mayari R60 Weathering Steel Plate (3/16" to 4" Thick)** **Product Overview** Bethlehem Steel Mayari R60 is a proprietary high-strength weathering steel that combines exceptional atmospheric corrosion resistance with a minimum yield strength of 60 ksi (414 MPa). Developed as Bethlehem's premium weathering steel product, Mayari R offers approximately **8 times** the corrosion resistance of carbon steel—significantly exceeding standard ASTM A588 performance. Available in thicknesses from 3/16 inch (4.8 mm) to 4 inches (101.6 mm), this steel forms a dense, adherent oxide patina that protects the base metal while eliminating the need for protective painting in most atmospheric exposures. **International Standard & Certification Framework** * **Primary Specification:** **Bethlehem Steel Corporation Proprietary Specification** for Mayari R Weathering Steel * **Related ASTM Standards:** - **ASTM A709 Grade 50W:** Closest standard equivalent for structural applications - **ASTM A588 Grade B:** Similar weathering characteristics but lower strength - **ASTM A242 Type 1:** Alternate weathering steel specification * **International Equivalents:** - **EN Standard:** EN 10025-5 S460J2W (Weathering steel with 460 MPa yield) - **ISO Standard:** ISO 4952 WR 50/60 (High strength weathering grades) - **JIS Standard:** JIS G3125 SPA-H (Weathering steel for welded structures) * **AASHTO Designation:** M270 Grade 50W/70W for bridge applications * **Proprietary Designation:** Mayari R60 (60 ksi minimum yield point) **Chemical Composition (Proprietary Analysis, Weight %)** Mayari R's enhanced performance derives from a carefully balanced alloy system that optimizes both strength and corrosion resistance through multiple synergistic elements. | Element | Mayari R60 Typical Composition | Functional Role | Performance Impact | |---------|-------------------------------|-----------------|-------------------| | Carbon (C) | 0.12 - 0.20% | Base strength element | Optimized for weldability-strength balance | | Manganese (Mn) | 0.50 - 1.25% | Strength and hardenability | Enhances strength without excessive CE | | Phosphorus (P) | 0.07 - 0.15% | Primary corrosion resistance | Forms protective phosphate in patina layer | | Sulfur (S) | 0.05% max | Controlled impurity | Minimized for improved weldability | | Silicon (Si) | 0.25 - 0.75% | Deoxidizer and strengthener | Enhances patina formation and stability | | Copper (Cu) | 0.25 - 0.55% | Corrosion resistance | Primary weathering element, reduces corrosion rate | | Chromium (Cr) | 0.40 - 1.00% | Oxidation resistance | Stabilizes rust layer, prevents spalling | | Nickel (Ni) | 0.25 - 0.65% | Toughness and corrosion resistance | Improves performance in industrial atmospheres | | Molybdenum (Mo) | 0.08 - 0.30% | Strength and corrosion resistance | Enhances pitting resistance in chloride environments | | Vanadium (V) | 0.02 - 0.10% | Grain refinement | Precipitation strengthening, improves toughness | | **Special Additives** | Rare earth elements (optional) | Microstructure control | Further enhances patina adherence and uniformity | | **Carbon Equivalent (CE IIW)** | **0.38 - 0.45** | Weldability parameter | Carefully controlled despite high strength | *Note: Mayari R chemistry represents a significant advancement over standard weathering steels through its optimized multi-element system and tighter compositional control.* **Physical & Mechanical Properties** **1. Standard Mechanical Properties:** - **Yield Strength (min):** 60 ksi (414 MPa) across thickness range - **Tensile Strength:** 75 - 95 ksi (517 - 655 MPa) - **Yield-to-Tensile Ratio:** 0.70 - 0.80 - **Elongation in 2" (min):** 19% (for thicknesses ≤ ¾") - **Elongation in 8" (min):** 22% (for thicknesses ≤ ¾") - **Reduction of Area (typical):** 45 - 55% **2. Thickness-Adjusted Properties:** - For plates >¾" to 1½": 2" elongation minimum 18% - For plates >1½" to 4": 2" elongation minimum 16% **3. Enhanced Corrosion Performance:** - **Corrosion Rate:** 0.1 - 0.3 mils/year (2.5 - 7.5 µm/year) in industrial atmospheres - **Comparative Performance:** 6-8 times more resistant than carbon steel - **Patina Formation:** Rapid development (3-9 months) of dense, protective layer - **Patina Characteristics:** Darker, more uniform appearance than standard weathering steels - **Chloride Resistance:** Superior performance in marine and de-icing salt environments **4. Impact Properties:** - **Charpy V-Notch (typical):** 25-40 ft-lb (34-54 J) at 0°F (-18°C) - **Transition Temperature:** Lower than equivalent strength standard weathering steels - **Heat-Affected Zone Toughness:** Maintains 75-85% of base metal values with proper welding **5. Physical Constants:** - **Density:** 0.283 lb/in³ (7.84 g/cm³) - **Modulus of Elasticity:** 29,000 ksi (200 GPa) - **Coefficient of Thermal Expansion:** 6.4 × 10⁻⁶/°F (11.5 × 10⁻⁶/°C) - **Thermal Conductivity:** 25.5 BTU·in/(hr·ft²·°F) at 212°F - **Specific Heat:** 0.11 BTU/(lb·°F) **6. Technological Properties:** - **Weldability:** Very Good (AWS D1.1 Group III) - **Preheat Requirements:** - ≤ 1": 150°F (66°C) typical - 1" to 2": 200-250°F (93-121°C) - >2" to 4": 250-300°F (121-149°C) - **Machinability:** 55% of B1112 (moderate) - **Formability:** Good; minimum bend radius of 2.5t for 90° bending - **Flame Cutting:** Standard practices apply with minimal preheat for thicknesses < 2" **Product Applications** **1. Premium Bridge & Transportation Structures:** - Signature highway and railway bridges requiring maintenance-free performance - Long-span bridge components where weight reduction is critical - Overpasses and interchanges in corrosive environments - Sound barrier supports and retaining walls **2. Architectural & Monumental Structures:** - Exposed structural frames for museums, arenas, and public buildings - Sculptural elements and artistic installations - Facade systems and sun control devices - Roof structures and canopies **3. Industrial & Utility Applications:** - High-strength transmission towers and poles - Industrial walkways and platforms in corrosive environments - Material handling equipment exposed to weather - Crane runways and support structures **4. Marine & Coastal Applications:** - Bridge and pier components in splash zones - Coastal protection structures - Marina facilities and waterfront structures - Offshore platform components above waterline **5. Specialized Applications:** - Military structures requiring low maintenance - Agricultural equipment frames - Mining equipment components for surface operations - Railroad car components for corrosive service **Patina Development & Performance Characteristics** **Unique Patina Properties:** 1. **Accelerated Formation:** Develops protective layer in 3-9 months vs. 12-18 months for standard grades 2. **Enhanced Adherence:** Denser, more adherent oxide layer with reduced spalling 3. **Uniform Appearance:** More consistent color development across surfaces 4. **Self-Healing:** Superior ability to re-form protective layer if damaged **Environmental Performance Data:** - **Rural Atmosphere:** Corrosion rate < 0.1 mils/year - **Industrial Atmosphere:** 0.1-0.2 mils/year - **Marine Atmosphere:** 0.2-0.3 mils/year - **Severe Industrial:** 0.3-0.4 mils/year **Design Considerations for Mayari R:** - Requires proper detailing to avoid moisture traps - Initial runoff may contain higher iron content than standard weathering steels - Compatible with most adjacent materials with proper design - Not recommended for continuously wet or submerged applications - Electrical isolation required when contacting dissimilar metals **Manufacturing & Processing** **1. Available Conditions:** - **As-Rolled:** Standard delivery for thicknesses ≤ 2" - **Normalized:** Recommended for >2" thickness or enhanced toughness - **Normalized & Tempered:** For critical applications requiring stress relief **2. Surface Characteristics:** - **Mill Finish:** Hot-rolled with tight oxide scale - **Blasted:** For accelerated patina formation or painting - **Pre-patinated:** Chemically treated options available (special order) **3. Fabrication Guidelines:** - **Welding:** Use matching weathering steel electrodes (AWS E8018-W or similar) - **Bolt Connections:** Use weathering steel or stainless steel fasteners - **Shearing & Punching:** Similar to other high-strength low-alloy steels - **Thermal Cutting:** Standard practices with attention to preheat for thicker sections **4. Quality Assurance:** - Full chemical analysis for each heat - Mechanical testing to proprietary specifications - Optional ultrasonic testing for thicker plates - Full traceability with heat and plate identification **Technical Advantages over Standard Weathering Steels** 1. **Higher Strength:** 60 ksi yield vs. 50 ksi for standard grades 2. **Enhanced Corrosion Resistance:** 6-8x carbon steel vs. 4-6x for standard grades 3. **Faster Patina Development:** 3-9 months vs. 12-18 months 4. **Improved Weldability:** Optimized carbon equivalent despite higher strength 5. **Superior Chloride Resistance:** Better performance in marine environments 6. **Reduced Maintenance:** Longer intervals between inspections and repairs 7. **Aesthetic Quality:** More uniform, attractive patina development **Economic & Sustainability Benefits** 1. **Life-Cycle Cost Savings:** Elimination of painting and associated maintenance 2. **Environmental Impact:** No paint-related VOCs or maintenance chemicals 3. **Material Efficiency:** Higher strength allows lighter, more efficient designs 4. **Longevity:** Extended service life in corrosive environments 5. **Recyclability:** 100% recyclable at end of service life **Procurement Specifications** When ordering Mayari R60, specify: - Bethlehem Steel Mayari R60 (or equivalent proprietary grade) - Thickness, width, and length requirements - Charpy test temperature if required - Heat treatment condition (as-rolled or normalized) - Surface preparation requirements - Certification requirements - Special testing (UT, MT, PT) if needed - Marking and packaging requirements **Disclaimer** Mayari R is a proprietary Bethlehem Steel product with specific performance characteristics. While described here based on historical specifications, current equivalent products may vary. For critical applications, consult with materials engineers experienced with premium weathering steels. Always follow current design codes and best practices for weathering steel applications. Performance data are based on typical exposures; actual performance may vary with specific environmental conditions. Proper design, detailing, and fabrication are essential to achieve the full benefits of Mayari R weathering steel. -:- For detailed product information, please contact sales. -: Bethlehem Steel Mayari R60 3/16 to 4 in. thick, steel plate Specification Dimensions Size： Diameter 20-1000 mm Length <4640 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. -: Bethlehem Steel Mayari R60 3/16 to 4 in. thick, steel plate Properties -:- For detailed product information, please contact sales. -:

Applications of Bethlehem Steel Flange Mayari R60 3/16 to 4 in. thick, Steel Flange plate -:- For detailed product information, please contact sales. -: Chemical Identifiers Bethlehem Steel Flange Mayari R60 3/16 to 4 in. thick, Steel Flange plate -:- For detailed product information, please contact sales. -:

Packing of Bethlehem Steel Flange Mayari R60 3/16 to 4 in. thick, Steel Flange plate -:- 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 1111 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