Iron Flange tension grade 80-55-06

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 tension grade 80-55-06 Product Information -:- For detailed product information, please contact sales. -: Ductile Iron Flange tension grade 80-55-06 Synonyms -:- For detailed product information, please contact sales. -:

Ductile Iron tension grade 80-55-06 Product Information -:- For detailed product information, please contact sales. -: ### **Product Technical Data Sheet: Ductile Iron – Tensile Grade 80-55-06 (High-Strength, Pearlitic)** --- #### **1. Product Overview** **Tensile Grade 80-55-06** is a **high-strength, predominantly pearlitic ductile iron** defined by its guaranteed mechanical properties: **minimum 80 ksi (550 MPa) tensile strength, 55 ksi (380 MPa) yield strength, and 6% elongation**. This designation represents a **premium engineering grade** that delivers significantly elevated strength and hardness while maintaining controlled ductility. It is engineered for applications where components face **high static and dynamic stresses, severe wear, or require weight reduction through higher allowable design stresses**. Achieving these properties typically requires a **normalizing heat treatment** to produce a refined, consistent pearlitic matrix, resulting in exceptional fatigue strength and load-bearing capacity. --- #### **2. Governing International Standards** This high-performance tensile grade is recognized under all major international standards. * **Primary Standard: ASTM A536** - *Standard Specification for Ductile Iron Castings*. Formally designated as **Grade 80-55-06**. * **Global Equivalents:** * **ISO 1083 / EN 1563:** **EN-GJS-600-5** (600 MPa tensile, 370 MPa yield, 5% elongation). This is the direct functional and commercial equivalent. * **SAE J434c (Automotive):** **Grade D5506**. * **JIS G5502 (Japan):** **FCD600**. * **GB/T 1348 (China):** **QT600-3** (Note: Chinese standard elongation differs; specify properties directly). * **UNS Designation:** **F34100**. * **Key Referenced Testing Standards:** * **Tensile Test:** ASTM E8 / ISO 6892-1 * **Hardness:** ASTM E10 / ISO 6506 (Brinell) * **Microstructure:** ASTM A247 / ISO 945 --- #### **3. Typical Chemical Composition (Normalized Condition)** Chemistry is designed to respond effectively to normalizing, producing a strong, pearlitic microstructure. Alloying is often required. | Element | Target Range (%) | Functional Role | | :--- | :--- | :--- | | **Carbon (C)** | 3.4 - 3.7 | Slightly lower than ferritic grades to strengthen the metallic matrix. | | **Silicon (Si)** | 2.0 - 2.4 | Controlled to limit ferrite formation and achieve target pearlite content post-normalizing. | | **Manganese (Mn)** | **0.30 - 0.60** | A key pearlite stabilizer. Ensures a fully pearlitic structure, especially in the core of thicker sections. | | **Phosphorus (P)** | **≤ 0.04** | Kept low. | | **Sulfur (S)** | **≤ 0.015** | Kept very low. | | **Magnesium (Mg)** | 0.03 - 0.05 (Residual) | Essential for nodulization. | | **Copper (Cu)** | **0.40 - 0.80** | **Primary alloying element.** A strong and uniform pearlite promoter, critical for achieving consistent high strength and hardness. | | **Molybdenum (Mo)** | **0 - 0.25** | Often added to increase hardenability in heavy sections, preventing unwanted ferrite and ensuring through-thickness properties. | | **Tin (Sn)** | 0 - 0.10 | Potent pearlite stabilizer; used in small amounts for section uniformity. | | **Chromium (Cr)** | **≤ 0.10** | Strictly limited to avoid excessive carbide formation. | --- #### **4. Physical & Mechanical Properties** This grade is defined by high strength, excellent fatigue resistance, and good wear properties. | Property | Minimum Requirement / Typical Value | Standard & Significance | | :--- | :--- | :--- | | **Tensile Strength, min.** | **550 MPa (80,000 psi)** | ASTM A536 / ISO 1083 | | **Yield Strength (0.2% offset), min.** | **380 MPa (55,000 psi)** | **High yield strength** provides a significant safety margin against permanent deformation and allows for more efficient, lightweight designs. | | **Elongation, min.** | **6%** (in 2 inches / 50 mm) | Maintains measurable ductility, important for absorbing shock loads and stress concentrations. | | **Hardness (Brinell)** | **207 - 255 HBW** | Guaranteed range. The higher hardness provides excellent resistance to abrasion and adhesive wear. | | **Modulus of Elasticity** | 165 - 172 GPa (24 - 25 x 10⁶ psi) | High stiffness, beneficial for components requiring dimensional stability under load. | | **Charpy Impact (Unnotched) @ 21°C** | **15 - 25 J (Typical)** | Adequate impact resistance for many 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 and gears. | | **Density** | 7.1 - 7.2 g/cm³ (0.256 lb/in³) | | | **Typical Microstructure** | **Predominantly Pearlite (>80%)** matrix 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** Tensile Grade 80-55-06 is specified for highly stressed, safety-critical components in demanding environments. * **Automotive & Heavy-Duty Truck Powertrain:** **Crankshafts (especially for mid-range diesel engines), camshafts, differential carriers, ring gears, transmission gears, and clutch components.** * **Off-Highway & Construction Equipment:** **Drive gears, track rollers and links for excavators, hydraulic pump bodies, and axle components.** * **Industrial Machinery:** **Compressor crankshafts, high-pressure valve bodies, press columns, machine tool spindles, and heavy-duty rolls.** * **Agriculture:** **Final drive gear housings, combine harvester gearboxes, and high-stress implement components.** * **Energy:** **Gearbox components for wind turbines** where high fatigue strength under variable loads is essential. --- #### **6. Fabrication & Quality Notes** * **Condition:** **Typically Supplied Normalized.** 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. * **Machinability:** **Fair to Good.** More demanding than ferritic grades due to the harder pearlitic matrix. Requires appropriate tool materials (carbide is common), rigid setups, and correct machining parameters. * **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. * **Quality Assurance:** Requires rigorous process control. Testing of **separately cast test bars** is standard. Heat treatment certification is often requested. --- #### **7. Ordering Information** **Specify:** **"Ductile Iron Castings, Tensile Grade 80-55-06 (ASTM A536 80-55-06), Normalized Condition."** **Essential Details to Provide:** * **Applicable Standard** (e.g., ASTM A536). * **Part Drawing & Specification.** * **Explicit Statement of Heat Treatment:** "Normalized". * **Certification Requirements:** Mill Test Report (MTR) with chemistry, tensile properties, hardness, and often microstructure verification (pearlite content). * **Special Requirements:** Any need for non-destructive testing (NDT) such as magnetic particle or ultrasonic inspection, especially for critical areas. **Tensile Grade 80-55-06 represents a premium engineering material, offering a near-ideal balance of very high strength, excellent fatigue resistance, and retained ductility, making it a first-choice upgrade for components where performance limits are being pushed.** -:- For detailed product information, please contact sales. -: Ductile Iron tension grade 80-55-06 Specification Dimensions Size： Diameter 20-1000 mm Length <6533 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 tension grade 80-55-06 Properties -:- For detailed product information, please contact sales. -:

Applications of Ductile Iron Flange tension grade 80-55-06 -:- For detailed product information, please contact sales. -: Chemical Identifiers Ductile Iron Flange tension grade 80-55-06 -:- For detailed product information, please contact sales. -:

Packing of Ductile Iron Flange tension grade 80-55-06 -:- 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 3004 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