Iron Flange SAE J434c Grade D5506

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. -: Ductile Iron Flange SAE J434c Grade D5506 Product Information -:- For detailed product information, please contact sales. -: Ductile Iron Flange SAE J434c Grade D5506 Synonyms -:- For detailed product information, please contact sales. -:

Ductile Iron SAE J434c Grade D5506 Product Information -:- For detailed product information, please contact sales. -: ### **Product Technical Data Sheet: Ductile Iron (Nodular Iron) – SAE J434c Grade D5506** --- #### **1. Product Overview** SAE J434c Grade **D5506** is a **high-strength, pearlitic-ferritic ductile iron** specification established by the Society of Automotive Engineers (SAE) for critical automotive and heavy-duty transportation components. The "D5506" designation indicates **minimum tensile strength (55 ksi or 380 MPa) and minimum elongation (6%)**. This grade is engineered to provide an optimal balance of **high strength, excellent fatigue resistance, and good wear properties**, while maintaining sufficient ductility for demanding service. It is the SAE equivalent to the widely used **ASTM A536 80-55-06** grade and is typically supplied in the **normalized** condition to achieve a refined, consistent pearlitic microstructure essential for performance under high cyclic loads. --- #### **2. Governing Standards & Specifications** This grade is a staple in automotive material specifications, with clear mappings to international standards. * **Primary Standard: SAE J434c (Current) / SAE J434** - *Ductile Iron Castings*. The grade is designated as **D5506**. * **Direct Cross-Equivalencies:** * **ASTM A536:** **Grade 80-55-06** (80 ksi tensile, 55 ksi yield, 6% elongation). * **ISO 1083 / EN 1563:** **EN-GJS-600-5** (600 MPa tensile, 370 MPa yield, 5% elongation). *Note: This is the functional international equivalent, though minor property differences exist.* * **UNS Designation:** **F34100** * **Key Referenced Testing Standards:** * **Tensile Test:** ASTM E8 / ISO 6892-1 * **Hardness:** ASTM E10 (Brinell) / ASTM E18 (Rockwell) * **Microstructure:** ASTM A247 / ISO 945-1 * **Automotive Quality Protocols:** Mandatory compliance with: * **IATF 16949** (Quality Management System) * **Customer-Specific PPAP (Production Part Approval Process)** requirements, often including CQI-9 (Heat Treat System Assessment). --- #### **3. Typical Chemical Composition** The chemistry is alloyed to ensure a predominantly pearlitic matrix upon normalizing, providing high strength and hardness. | Element | SAE / ASTM Typical Range (%) | Functional Role for D5506 | | :--- | :--- | :--- | | **Carbon (C)** | 3.4 - 3.7 | Provides strength potential; slightly lower than ferritic grades to strengthen the metallic matrix. | | **Silicon (Si)** | 2.0 - 2.4 | Controlled to limit ferrite formation, ensuring target pearlite content after heat treatment. | | **Manganese (Mn)** | 0.3 - 0.6 | Key pearlite stabilizer. Ensures a fully pearlitic structure, especially in heavier sections. | | **Magnesium (Mg)** | 0.03 - 0.05 (Residual) | Essential for spheroidal graphite formation. | | **Copper (Cu)** | **0.4 - 0.8** | **Primary alloying element.** A strong and uniform pearlite promoter, critical for achieving consistent high strength and hardness throughout varying casting sections. | | **Molybdenum (Mo)** | 0 - 0.25 | May be added to increase hardenability in very heavy sections, preventing unwanted ferrite. | | **Chromium (Cr)** | ≤ 0.10 | Strictly limited to avoid excessive carbide formation. | | **Phosphorus (P)** | ≤ 0.04 | Kept low to prevent embrittlement. | | **Sulfur (S)** | ≤ 0.015 | Kept very low. | --- #### **4. Physical & Mechanical Properties** This grade is defined by its high strength and excellent fatigue performance. | Property | SAE J434c D5506 / ASTM 80-55-06 Requirement | Typical Value / Notes | | :--- | :--- | :--- | | **Tensile Strength, min.** | **552 MPa (80,000 psi)** | | | **Yield Strength (0.2% offset), min.** | **379 MPa (55,000 psi)** | High yield strength provides a significant safety margin against permanent deformation. | | **Elongation, min.** | **6%** (in 2 in. / 50 mm) | Maintains measurable ductility, important for absorbing shock loads. | | **Hardness (Brinell)** | **207 - 255 HBW** | Specified range ensures the required wear resistance and machinability balance. | | **Modulus of Elasticity** | 165 - 172 GPa (24 - 25 x 10⁶ psi) | High stiffness, beneficial for components requiring dimensional stability under load. | | **Charpy Impact (Unnotched)** | Not specified by SAE, but typically **15 - 25 J @ 21°C** | Adequate impact resistance for high-strength applications. | | **Fatigue Endurance Limit** | **~260 - 290 MPa** (≈ 0.47-0.53 x UTS) | **A standout feature.** Excellent fatigue strength, making it ideal for cyclically loaded parts like crankshafts. | | **Density** | 7.1 - 7.2 g/cm³ (0.256 lb/in³) | | | **Typical Microstructure (Normalized)** | **Predominantly Pearlite (typically >80%)** with **Spheroidal Graphite** (Nodularity >85%, Types I & II). Minor "bull's eye" ferrite may surround nodules. | The refined pearlite from normalizing is responsible for the high strength and fatigue resistance. | --- #### **5. Product Applications** SAE D5506 is specified for the most highly stressed powertrain and chassis components in vehicles and machinery. * **Powertrain (Primary Application):** **Crankshafts (for mid-range to heavy-duty engines), camshafts, differential cases, ring gears, transmission gears, and clutch components.** Its fatigue strength is critical in these applications. * **Chassis & Suspension:** **Steering knuckles, spindle supports, and heavy-duty hub carriers** for trucks and SUVs. * **Commercial & Off-Highway Vehicles:** **Axle housings, wheel hubs, brake calipers, and hydraulic pump bodies** for construction and agricultural equipment. * **Industrial:** **Compressor crankshafts, high-pressure valve bodies, pump housings, and press components.** --- #### **6. Fabrication & Quality Notes** * **Condition:** **Normalized (Standard).** The standard production route involves heating to 870-900°C, followed by air cooling. This is critical to develop the uniform pearlitic structure that delivers the specified properties. "As-cast" to this grade is not typical and does not guarantee consistent properties. * **Machinability:** **Fair to Good.** More demanding than lower-strength ferritic grades due to the harder pearlitic matrix. Requires appropriate tool materials (carbide is common), rigid setups, and correct feeds/speeds. * **Weldability:** **Poor.** Not recommended for fabrication. If repair is unavoidable, it requires extreme caution: high pre-heat (500-600°C), specialized nickel-based filler metals (e.g., ENiFe-CI), controlled interpass temperature, and mandatory post-weld stress relief. * **Automotive Quality Requirements:** Supply typically mandates: * **Material Certification:** Full MTR per heat/lot, including tensile and hardness data. * **Heat Treatment Documentation:** Certification of normalized cycle parameters. * **First Article Inspection (FAI) & PPAP Submission** at approved levels. * **Non-Destructive Testing (NDT):** 100% magnetic particle inspection (MPI) is common for critical surfaces (e.g., fillets on crankshafts). Ultrasonic testing (UT) may be specified for internal soundness. --- #### **7. Ordering Information** **Specify:** **"Ductile Iron Castings, SAE J434c Grade D5506 (ASTM 80-55-06 equivalent), Normalized Condition."** **Essential Details to Provide:** * **Part Drawing & Specification Number.** * **Explicit Statement of Heat Treatment:** "Normalized". * **Certification Requirements:** MTR including full chemistry, tensile properties, and hardness. * **Quality & Inspection Requirements:** Required PPAP level, specific NDT requirements (e.g., per customer drawing), and any special marking. * **Microstructure Requirement:** May specify a minimum pearlite content (e.g., >80% pearlite). **SAE J434c Grade D5506 (ASTM 80-55-06) is a premium, high-reliability material for automotive engineering, enabling the design of lighter, stronger, and more durable components that withstand the extreme stresses of modern powertrains and heavy-duty applications.** -:- For detailed product information, please contact sales. -: Ductile Iron SAE J434c Grade D5506 Specification Dimensions Size： Diameter 20-1000 mm Length <6526 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. -: Ductile Iron SAE J434c Grade D5506 Properties -:- For detailed product information, please contact sales. -:

Applications of Ductile Iron Flange SAE J434c Grade D5506 -:- For detailed product information, please contact sales. -: Chemical Identifiers Ductile Iron Flange SAE J434c Grade D5506 -:- For detailed product information, please contact sales. -:

Packing of Ductile Iron Flange SAE J434c Grade D5506 -:- 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 2997 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