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

Ductile Iron compression grade 80-55-06 Product Information -:- For detailed product information, please contact sales. -: ### **Product Technical Data Sheet: Ductile Iron – Grade 80-55-06 (Pearlitic) for High-Strength Compression Applications** --- #### **1. Product Overview** **Ductile Iron Grade 80-55-06** is a **high-strength, predominantly pearlitic grade** whose exceptional performance under **compressive loading** is a cornerstone of its engineering value. While defined by tensile metrics, this grade delivers **outstanding compressive yield strength, superior stiffness, and excellent resistance to deformation and fatigue under cyclic compressive stresses**. It is engineered for the most demanding structural applications where maximum load-bearing capacity, minimal deflection, and resistance to surface indentation are critical. The refined pearlitic matrix, achieved through normalizing, provides a robust combination of strength and stability that makes it a preferred material for replacing steel components in heavy-duty support and power transmission roles. --- #### **2. Governing International Standards** The material is specified by its tensile grade standards, with its superior compressive characteristics being a key functional attribute. * **Primary Standard (Tensile Definition): ASTM A536** - *Standard Specification for Ductile Iron Castings*. Formally designated as **Grade 80-55-06**. * **Global Tensile Equivalents:** These standards define the material and its inherent compressive performance: * **ISO 1083 / EN 1563:** **EN-GJS-600-5**. * **SAE J434c:** **Grade D5506**. * **UNS F34100**. * **Key Referenced Testing Standards:** * **Compressive Testing:** ASTM E9 guides material evaluation. * **Tensile & Hardness (for certification):** ASTM E8, ASTM E10 / ISO equivalents. * **Fatigue Testing:** Relevant for cyclic compressive applications (e.g., ASTM E466). --- #### **3. Typical Chemical Composition (Normalized Condition)** Chemistry is alloyed to ensure a strong, consistent pearlitic matrix that maximizes compressive properties. | Element | Target Range (%) | Functional Role for Compression Performance | | :--- | :--- | :--- | | **Carbon (C)** | 3.4 - 3.7 | Strengthens the metallic matrix; slightly lower than ferritic grades for enhanced matrix integrity. | | **Silicon (Si)** | 2.0 - 2.4 | Controlled to limit ferrite, promoting a high-strength pearlitic structure. | | **Manganese (Mn)** | **0.30 - 0.60** | Essential pearlite stabilizer; ensures high through-thickness strength in compression. | | **Magnesium (Mg)** | 0.03 - 0.05 | Ensures spheroidal graphite for effective load distribution. | | **Copper (Cu)** | **0.40 - 0.80** | **Critical alloy.** Promotes a uniform, fine pearlite structure, directly enhancing compressive yield and fatigue strength. | | **Molybdenum (Mo)** | **0 - 0.25** | Added for heavy sections to prevent ferrite and ensure consistent high strength. | | **Phosphorus (P)** | **≤ 0.04** | Kept low. | | **Sulfur (S)** | **≤ 0.015** | Kept very low. | --- #### **4. Physical & Mechanical Properties (Compression Focus)** This grade exhibits some of the highest compressive strength-to-weight ratios among cast ferrous materials. | Property | Value / Ratio | Significance for Compression Applications | | :--- | :--- | :--- | | **Compressive Yield Strength (0.2% offset)** | **~900 - 1100 MPa (130 - 160 ksi)** | **Approximately 2.4x its tensile yield strength.** Enables extremely compact, high-load designs. | | **Ultimate Compressive Strength** | **> 1300 MPa (189 ksi)** | Exceptionally high; structural buckling or global yielding will precede material crushing. | | **Compressive-to-Tensile Yield Ratio** | **~2.4 : 1 to 2.7 : 1** | Highlights exceptional efficiency and reliability under compressive loads. | | **Tensile Properties (Certification Basis)** | **550 MPa UTS, 380 MPa YS, 6% Elongation** | Standard certification basis. | | **Hardness (Brinell)** | **207 - 255 HBW** | High hardness provides excellent resistance to brinelling, fretting, and wear on bearing surfaces. | | **Modulus of Elasticity** | **165 - 172 GPa** | High stiffness ensures minimal elastic deformation under load, critical for precision alignment. | | **Fatigue Strength (Compressive)** | **Very High** | The fine pearlitic matrix offers exceptional resistance to failure under repeated compressive cycles (e.g., in press components). | | **Damping Capacity** | **~2-4 times greater than steel** | Provides valuable vibration damping, though lower than more ferritic grades. | | **Microstructure** | **>80% Fine Pearlite** with **Spheroidal Graphite**. | The pearlitic matrix is responsible for the high strength, hardness, and fatigue resistance. | --- #### **5. Product Applications (Compression-Dominant)** Grade 80-55-06 is specified for the most demanding structural and power transmission components. * **Heavy Press & Forging Equipment:** **Press columns, crank shafts, connecting rods, anvil blocks, and die holders** in mechanical and hydraulic presses. Its high compressive fatigue strength is critical. * **Machine Tool Structures:** **High-precision machining center columns, large boring mill bases, gear hobbing machine frames.** Combines stiffness for accuracy with damping for finish. * **Power Transmission Housings:** **High-torque gearbox casings, differential carriers, and heavy-duty axle housings** containing significant internal compressive forces. * **Rolling & Mill Equipment:** **Back-up roll chocks, housing blocks, and screw-down nuts** in metal rolling mills. * **Energy & Industrial:** **Turbine compressor casings, large valve bodies for high-pressure systems, and structural components for heavy machinery bases.** --- #### **6. Fabrication & Design Notes** * **Condition:** **Must be Normalized.** This heat treatment is non-negotiable to develop the uniform pearlitic microstructure that delivers the specified high compressive properties. "As-cast" material cannot guarantee this performance. * **Design Philosophy:** Engineers can confidently utilize the **very high compressive yield strength** for significant weight and space savings. **Finite Element Analysis (FEA)** is highly recommended to optimize geometry against buckling and stress concentrations. Surface hardening (e.g., induction) can be applied for extreme wear resistance on bearing areas. * **Machinability:** **Fair to Good.** Requires robust tooling (carbide) and parameters suitable for its hardness. Machining of critical bearing surfaces post-normalizing is standard. * **Weldability:** **Poor.** Welding is strongly discouraged for load-bearing areas. If repair is essential, it requires extreme caution and post-weld heat treatment, which may alter properties locally. --- #### **7. Ordering Information** **Specify:** **"Ductile Iron Castings, ASTM A536 Grade 80-55-06, Normalized Condition, for High-Strength Compression Application."** **Essential Details to Provide:** * **Applicable Standard** (ASTM A536). * **Part Drawing & Specification,** with explicit mention of compressive load cases, stiffness requirements, and fatigue life expectations if cyclic. * **Mandatory Heat Treatment:** "Normalized" must be stated. * **Certification Requirements:** Mill Test Report (MTR) with tensile properties, hardness, and often microstructure verification (minimum pearlite content). * **Special Requirements:** For critical components, **compressive yield verification per ASTM E9** and **non-destructive testing (UT, MPI)** for internal and surface integrity are commonly specified. **Ductile Iron Grade 80-55-06 stands as a premium material for engineers seeking maximum compressive performance from a cast component. Its unique synergy of near-steel strength, superior casting flexibility, and inherent damping makes it an unbeatable solution for the backbone of heavy industry.** -:- For detailed product information, please contact sales. -: Ductile Iron compression grade 80-55-06 Specification Dimensions Size： Diameter 20-1000 mm Length <6537 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 compression grade 80-55-06 Properties -:- For detailed product information, please contact sales. -:

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

Packing of Ductile Iron Flange compression 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 3008 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