UNS F33101 Cast Iron Flange

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. -: UNS F33101 Cast Iron Flange Product Information -:- For detailed product information, please contact sales. -: UNS F33101 Cast Iron Flange Synonyms -:- For detailed product information, please contact sales. -:

UNS F33101 Cast Iron Product Information -:- For detailed product information, please contact sales. -: ## **UNS F33101 Cast Iron - Technical Specification** ### **1. Product Overview** **UNS F33101** is a standardized designation within the Unified Numbering System (UNS) for a **medium-strength pearlitic malleable cast iron**. This specific alphanumeric code identifies a material that exhibits a balanced combination of **enhanced tensile strength, moderate ductility, and improved wear resistance** compared to its ferritic counterpart (F33100), achieved through controlled heat treatment that produces a pearlitic matrix structure. As part of the F33XXX series dedicated to malleable irons, F33101 represents a key grade for applications requiring higher load-bearing capacity while retaining a degree of castability and economic manufacturability. The material is characterized by a microstructure of **temper carbon aggregates (nodules) within a predominantly pearlitic matrix**, resulting from an interrupted or accelerated cooling cycle during the malleablizing process. This structure provides superior mechanical properties for components subjected to higher stresses, moderate shock, and wear, positioning it between the high-ductility ferritic grades and the ultra-high-strength quenched and tempered grades. ### **2. International Standards & Equivalents** #### **Primary Governing Standards:** * **ASTM A220/A220M**: *Standard Specification for Pearlitic Malleable Iron Castings*. This is the **primary reference standard** for the mechanical performance represented by UNS F33101. * **ASTM A602**: *Automotive Malleable Iron Castings* (commonly referenced for this performance grade). * **SAE J158**: Society of Automotive Engineers specification for malleable iron. #### **International Grade Equivalents:** | **Standard** | **Most Probable Equivalent Grade** | **Notes** | | :--- | :--- | :--- | | **ASTM A220** | **Grade 40010** or **Grade 45008** | F33101 typically aligns with the lower to mid-range of pearlitic grades (e.g., 400 MPa / 450 MPa tensile). | | **ISO 5922** | **JMB 400-10** or **JMB 450-8** | International standard equivalent based on tensile strength and elongation. | | **EN 1562** | **EN-GJMB-400-10** or **EN-GJMB-450-8** | European designation for malleable cast iron. | | **JIS G 5705** | **FCMB 450** | Japanese Industrial Standard for blackheart pearlitic malleable iron. | | **GB/T 9440** | **JMB 450** | Chinese National Standard. | #### **UNS System Context:** * **F33101**: The specific number differentiates it from F33100 (ferritic). The "01" suffix often denotes a variant with distinct properties, in this case, a pearlitic microstructure. * **Related UNS Codes**: * **F33100**: Ferritic malleable iron (lower strength, higher ductility). * **F34800**: Higher-strength pearlitic malleable iron (e.g., 450 MPa+). * **F35XXX / F36XXX Series**: Often used for austenitic and other specialized malleable irons. ### **3. Chemical Composition** To achieve the pearlitic transformation, the chemistry of F33101 is controlled, often with adjustments to key elements that influence hardenability. #### **Typical Composition Ranges (Weight %):** | Element | Typical Range | Function & Rationale | | :--- | :--- | :--- | | **Carbon (C)** | 2.30 – 2.80 | Provides strength foundation; excess carbon forms temper nodules. | | **Silicon (Si)** | 1.20 – 1.80 | Strong graphitizer. Higher than in some ferritic grades to ensure complete first-stage graphitization before pearlite formation. | | **Manganese (Mn)** | **0.50 – 1.20** | **Critical.** Significantly higher than in ferritic grades (F33100). Increases hardenability to suppress ferrite formation and promote pearlite upon air cooling. | | **Phosphorus (P)** | ≤ 0.12 | Impurity; kept low to preserve toughness. | | **Sulfur (S)** | ≤ 0.12 | Impurity; controlled level. | | **Chromium (Cr)** | 0.10 – 0.25 (optional) | May be added in small amounts to increase hardenability and strength. | | **Molybdenum (Mo)** | ≤ 0.15 (optional) | Occasionally added for enhanced hardenability in heavier sections. | **Key Alloying Philosophy:** The defining difference from ferritic grades (e.g., F33100) is the **elevated manganese content**. Manganese is the primary and most economical element used to increase the hardenability of the austenite, allowing it to transform to pearlite instead of ferrite during the cooling stage of heat treatment. ### **4. Physical & Mechanical Properties** #### **Minimum Requirements (Aligned with ASTM A220 Grade 40010/45008):** | Property | Minimum Requirement (Representative) | Typical / Achievable Range | | :--- | :--- | :--- | | **Tensile Strength** | 400 – 450 MPa (58,000 – 65,000 psi) | 400 – 500 MPa | | **Yield Strength (0.2% offset)** | 250 – 310 MPa (36,000 – 45,000 psi) | 280 – 350 MPa | | **Elongation** | 8 – 10 % (in 2" or 50mm) | 5 – 12% | | **Brinell Hardness** | 187 – 241 HB | 197 – 229 HB | #### **Comprehensive Property Profile:** **Mechanical Properties:** * **Strength:** Significantly higher tensile and yield strength than ferritic malleable iron, providing greater load capacity. * **Ductility/Toughness:** Maintains useful elongation (typically 5-10%), but impact resistance is lower than ferritic grades like F33100. * **Fatigue Strength:** **Good to Very Good.** The pearlitic structure offers better resistance to cyclic loading than ferritic structures. * **Modulus of Elasticity:** ~170-180 GPa, similar to other cast irons. **Hardness & Wear:** * **Hardness:** Higher hardness than ferritic grades, leading to **superior wear and abrasion resistance**. This is a key advantage for moving parts. * **Machinability:** **Good,** but inferior to ferritic malleable iron due to the harder pearlitic matrix. Still more machinable than many steels of equivalent strength. **Physical Properties:** * **Density:** ~7.3 g/cm³. * **Damping Capacity:** Good, though slightly less than ferritic malleable iron, but still superior to steel. * **Thermal & Electrical Conductivity:** Slightly lower than ferritic iron due to the pearlitic structure. ### **5. Heat Treatment & Microstructure** UNS F33101 undergoes a specialized **"pearlitic malleablizing"** heat treatment: 1. **First-Stage Graphitization:** Similar to ferritic iron. The white iron casting is heated to ~900-950°C to decompose cementite into temper carbon aggregates. 2. **Controlled Cooling (Air Quenching):** Instead of slow cooling through the lower critical temperature, the casting is cooled in air or accelerated air. The higher manganese content allows the austenite to transform to **pearlite** (a lamellar mixture of ferrite and cementite) rather than just ferrite. 3. The resulting microstructure consists of **temper carbon nodules in a matrix of fine to medium pearlite**. The proportion of pearlite determines the final strength and hardness. ### **6. Product Applications** UNS F33101 is specified for components that require **higher strength and better wear resistance than ferritic malleable iron can provide**, but where the extreme strength of quenched & tempered grades is unnecessary. **Automotive & Truck:** * **Drivetrain Components:** Differential carriers, universal joint yokes, some transmission gears. * **Chassis Parts:** Steering knuckles, hubs, brake camshafts. * **Suspension Components:** Shackles, spring hangers. **Agricultural & Heavy Equipment:** * **Tractor & Implement Parts:** Gears, sprockets, lever arms, high-strength linkages. * **Harvester Components.** **General Industrial & Hardware:** * **Industrial Machinery:** Gears, cams, rollers, low-to-medium stress wear plates. * **Valves & Fittings:** For higher-pressure applications than those using ferritic grades. * **Hand Tools:** High-strength wrenches, sockets. **Railroad:** * **Coupler Parts, Brake Components.** ### **7. Advantages and Limitations** **Advantages:** * **Good Strength-to-Ductility Balance:** Offers a practical compromise for many engineering applications. * **Improved Wear Resistance:** Superior to ferritic grades, extending component life. * **Good Machinability:** For a medium-strength material. * **Cost-Effective:** Often more economical than forged steel or ductile iron for complex, medium-volume parts. **Limitations:** * **Lower Ductility than Ferritic Grades:** Less suitable for very high shock-load applications. * **Section Sensitivity:** Properties can vary with casting wall thickness due to cooling rate effects. * **Heat Treatment Complexity:** Requires more precise control than ferritic annealing. ### **8. Conclusion** **UNS F33101 Pearlitic Malleable Iron** fills an important niche in the materials selection landscape. It provides designers with a reliable, castable material that delivers **enhanced strength and wear performance** over traditional ferritic malleable iron, making it suitable for a broader range of stressed components. When the application demands more than what F33100 can offer but does not justify the cost and processing complexity of the highest strength grades (e.g., quenched & tempered), F33101 presents an optimal, cost-effective solution. Its properties make it a workhorse material in automotive, agricultural, and general industrial sectors for durable, load-bearing cast components. -:- For detailed product information, please contact sales. -: UNS F33101 Cast Iron Specification Dimensions Size： Diameter 20-1000 mm Length <6591 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. -: UNS F33101 Cast Iron Properties -:- For detailed product information, please contact sales. -:

Applications of UNS F33101 Cast Iron Flange -:- For detailed product information, please contact sales. -: Chemical Identifiers UNS F33101 Cast Iron Flange -:- For detailed product information, please contact sales. -:

Packing of UNS F33101 Cast Iron Flange -:- 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 3062 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