Iron Flange SAE J434c Grade D4512

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 D4512 Product Information -:- For detailed product information, please contact sales. -: Ductile Iron Flange SAE J434c Grade D4512 Synonyms -:- For detailed product information, please contact sales. -:

Ductile Iron SAE J434c Grade D4512 Product Information -:- For detailed product information, please contact sales. -: ### **Product Technical Data Sheet: Ductile Iron (Nodular Iron) – SAE J434c Grade D4512** --- #### **1. Product Overview** SAE J434c Grade **D4512** is a widely specified **ferritic-pearlitic ductile iron** grade established by the Society of Automotive Engineers (SAE) for demanding automotive and transportation applications. The "D4512" designation follows the SAE nomenclature where the numbers indicate **minimum tensile strength (45 ksi or 310 MPa) and minimum elongation (12%)**. This grade provides an optimal balance of **higher strength, good stiffness, and moderate ductility**, making it suitable for components that experience significant static and dynamic loads while requiring reliability and fatigue resistance. It is the SAE equivalent to the prevalent **ASTM A536 65-45-12** grade and serves as a versatile, high-performance material for structural and drivetrain components. --- #### **2. Governing Standards & Specifications** This grade is defined within the automotive material ecosystem, with clear linkages to broader international standards. * **Primary Standard: SAE J434c (Current) / SAE J434** - *Ductile Iron Castings*. The grade is designated as **D4512**. * **Direct Cross-Equivalencies:** * **ASTM A536:** **Grade 65-45-12** (65 ksi tensile, 45 ksi yield, 12% elongation). * **ISO 1083 / EN 1563:** **EN-GJS-500-7** (500 MPa tensile, 320 MPa yield, 7% elongation). *Note: While the elongation spec differs, D4512/65-45-12 is the functional and commercial equivalent in North America.* * **UNS Designation:** **F33100** * **Key Referenced Testing Standards:** * **Tensile Test:** ASTM E8 / ISO 6892-1 * **Hardness:** ASTM E10 (Brinell) * **Microstructure:** ASTM A247 / ISO 945-1 * **Automotive Quality Protocols:** Often required in conjunction with: * **IATF 16949** (Quality Management for Automotive) * **Customer-Specific PPAP (Production Part Approval Process)** requirements. --- #### **3. Typical Chemical Composition** The chemistry is balanced to achieve a mixed ferritic-pearlitic matrix, providing strength without excessive alloying. | Element | SAE J434c / ASTM Typical Range (%) | Functional Role for D4512 | | :--- | :--- | :--- | | **Carbon (C)** | 3.5 - 3.8 | Ensures castability and provides graphite for lubrication and stress relief. | | **Silicon (Si)** | 2.2 - 2.6 | Solid solution strengthener and ferrite promoter. Level is balanced to achieve the target matrix. | | **Manganese (Mn)** | 0.15 - 0.35 | Primary pearlite stabilizer. Controlled to develop the required pearlite content (typically 40-70%) without excessive segregation. | | **Phosphorus (P)** | ≤ 0.04 | Kept low to prevent embrittling phosphide networks. | | **Sulfur (S)** | ≤ 0.02 | Kept very low. | | **Magnesium (Mg)** | 0.03 - 0.05 (Residual) | Essential for spheroidal graphite formation. | | **Copper (Cu)** | ≤ 0.30 (Optional) | May be added in small amounts to promote more uniform pearlite, especially in heavier sections. | | **Chromium (Cr)** | ≤ 0.10 | Strictly limited as a strong carbide former. | | **Nickel (Ni)** | Report | May be present as a trace element. | | **Molybdenum (Mo)** | ≤ 0.10 | Rarely added; if present, it's for hardenability in very thick sections. | --- #### **4. Physical & Mechanical Properties** This grade offers a robust combination of properties suitable for highly stressed components. | Property | SAE J434c D4512 / ASTM 65-45-12 Requirement | Typical Value / Notes | | :--- | :--- | :--- | | **Tensile Strength, min.** | **448 MPa (65,000 psi)** | | | **Yield Strength (0.2% offset), min.** | **310 MPa (45,000 psi)** | Provides a high safety margin against plastic deformation. | | **Elongation, min.** | **12%** (in 2 in. / 50 mm) | Substantial ductility for absorbing shock and stress concentrations. | | **Hardness (Brinell)** | **170 - 207 HBW** | Specified range ensures consistency and machinability. | | **Modulus of Elasticity** | 165 - 172 GPa (24 - 25 x 10⁶ psi) | High stiffness, beneficial for structural components. | | **Charpy Impact (Unnotched)** | Not specified by SAE, but typically **20-35 J @ 21°C** | Good impact resistance for its strength level. | | **Fatigue Endurance Limit** | ~230 - 250 MPa (≈ 0.5-0.55 x UTS) | Good fatigue performance for cyclically loaded parts. | | **Density** | 7.1 - 7.2 g/cm³ (0.256 lb/in³) | | | **Typical Microstructure** | **Mixed Matrix** of **Pearlite (40-70%) and Ferrite**, with **Spheroidal Graphite** (Nodularity >80%, Types I & II). | The pearlite provides strength; the ferrite provides ductility and toughness. | --- #### **5. Product Applications** SAE D4512 is a workhorse material in the automotive and heavy equipment sectors for components requiring a balance of strength and integrity. * **Automotive Drivetrain:** **Differential cases, carrier housings, transmission cases, axle supports, drive flanges, and flywheel housings.** * **Steering & Suspension:** **Steering knuckles, control arm brackets, and heavy-duty tie-rod ends.** * **Engine Components:** **Turbocharger housings, exhaust manifolds (lower-temp), engine mounting brackets.** * **Commercial & Off-Highway Vehicles:** **Heavy-duty wheel hubs, brake calipers for trucks, agricultural gearbox housings, and hydraulic valve bodies.** * **Industrial Machinery:** **Pump casings, compressor bodies, press frames, and general high-strength brackets and housings.** --- #### **6. Fabrication & Quality Notes** * **Condition:** Typically supplied **as-cast** (achieved via chemistry and cooling control) or **normalized** to ensure more consistent properties throughout the casting, especially for complex geometries. * **Machinability:** **Very Good to Excellent.** The mixed microstructure offers a favorable combination of strength and chip-breaking characteristics, leading to good tool life and surface finish. * **Weldability:** **Fair to Poor.** Standard precautions for ductile iron apply: high pre-heat (400-500°C), use of nickel-iron electrodes (e.g., ENi-CI), and controlled post-weld cooling with stress relief. Welding is generally for repair only. * **Automotive Quality Requirements:** Supply often mandates: * **Material Certification:** Full MTR (Mill Test Report) per heat/lot. * **First Article Inspection (FAI) & PPAP Submission.** * **Statistical Process Control (SPC)** data for key characteristics (hardness, nodularity). * **Non-Destructive Testing (NDT)** as specified on drawing (e.g., magnetic particle inspection for critical surfaces). --- #### **7. Ordering Information** **Specify:** **"Ductile Iron Castings, SAE J434c Grade D4512 (ASTM 65-45-12 equivalent)"**. **Essential Details to Provide:** * **Part Drawing & Specification Number.** * **Required Condition:** As-cast or Normalized (if a preference). * **Certification Requirements:** MTR including chemistry, tensile properties, and hardness. * **Quality & Inspection Requirements:** Any specific PPAP level, dimensional reporting, or NDT requirements (e.g., per customer drawing or CQI-9 for heat treat audit). * **Marking Requirements:** Part identification and material grade marking as per SAE J434c. **SAE J434c Grade D4512 (ASTM 65-45-12) is a cornerstone material for automotive engineering, providing a reliable, cost-effective, and high-performance solution for a vast array of structural and moving components.** -:- For detailed product information, please contact sales. -: Ductile Iron SAE J434c Grade D4512 Specification Dimensions Size： Diameter 20-1000 mm Length <6525 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 D4512 Properties -:- For detailed product information, please contact sales. -:

Applications of Ductile Iron Flange SAE J434c Grade D4512 -:- For detailed product information, please contact sales. -: Chemical Identifiers Ductile Iron Flange SAE J434c Grade D4512 -:- For detailed product information, please contact sales. -:

Packing of Ductile Iron Flange SAE J434c Grade D4512 -:- 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 2996 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