Iron Flange torsion grade 60-40-18

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 torsion grade 60-40-18 Product Information -:- For detailed product information, please contact sales. -: Ductile Iron Flange torsion grade 60-40-18 Synonyms -:- For detailed product information, please contact sales. -:

Ductile Iron torsion grade 60-40-18 Product Information -:- For detailed product information, please contact sales. -: ### **Product Technical Data Sheet: Ductile Iron – Grade 60-40-18 (Ferritic) for Torsion-Dominant Applications** --- #### **1. Product Overview** **Ductile Iron Grade 60-40-18** is a **high-ductility, ferritic grade** whose mechanical properties make it exceptionally well-suited for components subjected to **torsional (twisting) loads**. Defined by its tensile rating, this material exhibits a favorable combination of **moderate shear strength, high torsional ductility, and excellent fatigue resistance under cyclic twisting stresses**. Its fully annealed, ferritic microstructure provides reliable performance in applications where shock torque, vibration damping, and resistance to brittle fracture under torsion are critical. It is often specified for shafts, linkages, and drive components where its castability for complex shapes offers advantages over wrought materials. --- #### **2. Governing International Standards** The material is universally specified by tensile standards, with its torsional behavior derived from these fundamental properties. * **Primary Standard (Tensile Definition): ASTM A536** - *Standard Specification for Ductile Iron Castings*. Formally designated as **Grade 60-40-18**. * **Global Tensile Equivalents:** These define the material and thus its torsional characteristics: * **ISO 1083 / EN 1563:** **EN-GJS-400-18**. * **SAE J434c:** **Grade D4018**. * **UNS F32800**. * **Key Referenced Testing Standards:** * **Torsional Testing:** ASTM A938 (Standard Test Method for Torsion Testing of Wire) provides methodology principles, though component testing is more common. * **Tensile & Hardness (for certification):** ASTM E8, E10. * **Fatigue Testing:** Torsional fatigue life is often validated per component-specific protocols. --- #### **3. Typical Chemical Composition (Annealed Condition)** Chemistry is optimized for a uniform, ductile ferritic matrix to withstand shear stresses. | Element | Target Range (%) | Functional Role for Torsional Performance | | :--- | :--- | :--- | | **Carbon (C)** | 3.5 - 3.9 | High carbon provides graphite, which helps blunt propagating cracks under shear stress. | | **Silicon (Si)** | 2.3 - 2.8 | Promotes the soft, ductile ferritic matrix that allows for plastic yielding in shear without sudden fracture. | | **Manganese (Mn)** | **≤ 0.30** | Kept low to prevent the formation of hard, brittle micro-constituents that could act as initiation sites for torsional fatigue cracks. | | **Phosphorus (P)** | **≤ 0.04** | Very low to prevent grain boundary embrittlement, which is detrimental under combined torsional and tensile stresses. | | **Sulfur (S)** | **≤ 0.015** | Very low. | | **Magnesium (Mg)** | 0.03 - 0.05 | Ensures high nodularity; spherical graphite minimizes stress concentration compared to flake graphite. | --- #### **4. Physical & Mechanical Properties (Torsion Focus)** Torsional properties are derived from tensile data using established mechanical relationships. | Property | Value / Relationship | Significance for Torsional Applications | | :--- | :--- | :--- | | **Shear Modulus (Modulus of Rigidity, G)** | **~64 - 67 GPa (9.3 - 9.7 x 10⁶ psi)** | Calculated from Elastic Modulus (E) and Poisson's ratio. Determines angular deflection under torque. | | **Torsional Yield Strength (approx.)** | **~165 - 195 MPa (24 - 28 ksi)** | Estimated as **0.5 - 0.6 x Tensile Yield Strength (276 MPa)**. The shear yield point under pure torsion. | | **Ultimate Torsional Strength (approx.)** | **~330 - 360 MPa (48 - 52 ksi)** | Estimated as **0.8 - 0.9 x Tensile Strength (414 MPa)**. | | **Tensile Properties (Certification Basis)** | **414 MPa UTS, 276 MPa YS, 18% Elongation** | High elongation is crucial, as it correlates to high torsional ductility and large angles of twist before failure. | | **Fatigue Limit (Torsional)** | **~120 - 150 MPa** | Good resistance to failure under high-cycle reversed torsional loading. Surface finish and fillet radii are critical design factors. | | **Hardness (Brinell)** | **143 - 187 HBW** | Lower hardness is beneficial for machining stress-concentrating features like keyways and splines. | | **Damping Capacity** | **High** | Effectively dampens torsional vibrations, protecting downstream components from oscillatory loads. | --- #### **5. Product Applications (Torsion-Dominant)** This grade is ideal for components that transmit or resist torque in non-aggressive environments. * **Drive Shafts & Tubing:** **Intermediate shafts, PTO (Power Take-Off) shafts, and non-critical propeller shafts** for agricultural and light industrial equipment where shock loads are possible. * **Linkages & Levers:** **Steering linkage arms, throttle linkages, and actuating levers** subject to twisting motions. * **Pump & Compressor Drives:** **Shafts for low-to-moderate pressure centrifugal pumps and compressors.** * **Textile & Packaging Machinery:** **Various roller shafts and driven mandrels** where smooth operation and vibration damping are valued. * **General Power Transmission:** **Gear blanks prior to hardening, coupling hubs, and splined sleeves** where the component will be machined and sometimes later heat-treated. --- #### **6. Fabrication & Design Notes** * **Condition:** **Annealed (Ferritized).** This ensures maximum ductility and consistent properties, which are vital for predictable torsional behavior. * **Design Philosophy:** Critical to **minimize stress concentrators**. Use generous fillet radii at shoulder changes, avoid sharp corners on keyways, and consider roll-finishing or shot-peening for improved fatigue life. The **high torsional ductility** provides a "fail-safe" warning via noticeable deformation before fracture. * **Machinability:** **Excellent.** Easy to machine complex profiles, splines, and keyways, which is a major advantage over steel forgings for prototype or mid-volume production. * **Surface Enhancement:** While not through-hardened, **induction hardening or nitriding** can be applied to bearing surfaces or specific sections of the shaft to dramatically increase surface hardness and wear resistance without compromising the core's toughness. --- #### **7. Ordering Information** **Specify:** **"Ductile Iron Castings, ASTM A536 Grade 60-40-18, Annealed, for Torsional Application."** **Essential Details to Provide:** * **Applicable Standard** (ASTM A536). * **Part Drawing & Specification,** highlighting torque requirements, fatigue life expectations, and critical features (fillet radii, surface finish callouts for bearing areas). * **Certification Requirements:** Standard Mill Test Report (MTR) with tensile properties and hardness. * **Special Requirements:** If the application is highly stressed, **component-level torsion testing or fatigue validation** may be specified. **Magnetic Particle Inspection (MPI)** is recommended for surface quality verification on finished machined parts. **Grade 60-40-18 provides a reliable and cost-effective solution for torsionally loaded components, particularly where shock absorption, design flexibility, and a safety margin through ductility are more critical than absolute maximum strength.** -:- For detailed product information, please contact sales. -: Ductile Iron torsion grade 60-40-18 Specification Dimensions Size： Diameter 20-1000 mm Length <6539 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 torsion grade 60-40-18 Properties -:- For detailed product information, please contact sales. -:

Applications of Ductile Iron Flange torsion grade 60-40-18 -:- For detailed product information, please contact sales. -: Chemical Identifiers Ductile Iron Flange torsion grade 60-40-18 -:- For detailed product information, please contact sales. -:

Packing of Ductile Iron Flange torsion grade 60-40-18 -:- 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 3010 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