Malleable Iron Flange casting, Class 80002

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. -: Malleable Iron Flange casting, Class 80002 Product Information -:- For detailed product information, please contact sales. -: Malleable Iron Flange casting, Class 80002 Synonyms -:- For detailed product information, please contact sales. -:

Malleable iron casting, Class 80002 Product Information -:- For detailed product information, please contact sales. -: ## **Malleable Iron Casting - Class 80002: Premium Ultra-High Performance Grade** ### **1. Overview** **Class 80002** represents the **ultimate performance grade** in standardized pearlitic malleable iron technology, delivering exceptional tensile strength of **800 MPa (116,000 psi) minimum** with **2% minimum elongation**. This specialty grade operates at the very limits of cast iron technology, achieving mechanical properties that directly compete with quenched and tempered alloy steels while maintaining the casting advantages of iron. Developed for extreme-duty applications where conventional materials would fail, Class 80002 requires sophisticated metallurgical control and precision manufacturing processes. ### **2. International Standards** **Primary Standards:** - **ASTM A220/A220M** - Standard Specification for Pearlitic Malleable Iron Castings - **ASTM A602** - Automotive Malleable Iron Castings **International Equivalents:** | Standard | Designation | Region | Status | |----------|-------------|---------|--------| | **ISO 5922** | **JMB 800-2** | International | Special capability grade | | **EN 1562** | EN-GJMB-800-2 | European Union | Premium grade, limited availability | | **JIS G 5705** | FCMB 800 | Japan | Specialty application | | **GB/T 9440** | JMB 800 | China | High-performance classification | *Technical Note: Class 80002 is typically produced under **supplier-customer technical agreement** rather than as a standard stock item due to its demanding specifications and limited production volume.* ### **3. Chemical Composition** **Advanced Alloy Design (Weight %):** | Element | Range | Critical Function | |---------|-------|------------------| | **Carbon (C)** | 2.50-2.90 | Ultra-high strength foundation | | **Silicon (Si)** | 1.80-2.40 | Enhanced solid solution strengthening | | **Manganese (Mn)** | 1.40-2.00 | Maximum hardenability for thick sections | | **Chromium (Cr)** | 0.40-0.80 | Deep hardenability, wear resistance | | **Molybdenum (Mo)** | 0.25-0.50 | Tempering resistance, heavy section capability | | **Nickel (Ni)** | 0.30-0.70 | Toughness enhancement, hardenability | | **Vanadium (V)** | 0.10-0.25 | Grain refinement, secondary hardening | | **Copper (Cu)** | 0.50-1.00 | Hardenability, corrosion resistance | | **Boron (B)** | 0.001-0.003 | Hardness enhancement (trace addition) | | **Phosphorus (P)** | ≤ 0.04 | Ultra-low for maximum toughness | | **Sulfur (S)** | ≤ 0.04 | Ultra-low for improved machinability | **Alloy Design Philosophy:** - **Total Alloy Content:** Mn+Cr+Mo+Ni ≥ 3.0% - **Carbon Equivalent:** 4.0-4.5% - **Hardenability Index:** DI (Ideal Diameter) ≥ 6 inches - **Microstructure Control:** Balanced for martensitic transformation with retained toughness ### **4. Physical & Mechanical Properties** **Minimum Requirements:** | Property | Minimum Value | Typical Achievable Range | |----------|---------------|--------------------------| | **Tensile Strength** | 800 MPa (116,000 psi) | 800-950 MPa | | **Yield Strength (0.2%)** | 480 MPa (69,600 psi) | 480-600 MPa | | **Elongation** | 2% | 2-4% | | **Hardness** | 321-388 HB | 341-363 HB typical | **Comprehensive Property Profile:** **Mechanical Properties:** - **Tensile Strength:** 800-950 MPa (116,000-137,800 psi) - **Yield Strength:** 480-600 MPa (69,600-87,000 psi) - **Yield Ratio:** 0.60-0.65 - **Elongation:** 2-4% in 50 mm - **Reduction of Area:** 5-12% - **Modulus of Elasticity:** 190-200 GPa (27.6-29.0 × 10⁶ psi) - **Shear Modulus:** 75-80 GPa - **Poisson's Ratio:** 0.28-0.30 - **Compressive Strength:** 900-1100 MPa **Hardness & Wear Characteristics:** - **Brinell Hardness:** 321-388 HB (typically 341-363 HB) - **Rockwell Hardness:** 35-42 HRC equivalent - **Vickers Hardness:** 345-415 HV - **Abrasion Resistance:** Superior (5-7× better than ferritic grades) - **Surface Hardening Capability:** Can achieve 58-62 HRC with induction hardening - **Wear Coefficient:** 1.5-2.5 × 10⁻⁶ mm³/N·m (pin-on-disk test) **Fatigue & Fracture Properties:** - **Fatigue Limit (10⁷ cycles):** 300-380 MPa - **Fatigue Ratio:** 0.38-0.42 - **Charpy Impact (V-notch):** 4-10 J at 20°C - **Fracture Toughness (K₁c):** 25-40 MPa√m - **Ductile-Brittle Transition:** 20-40°C - **Crack Propagation Rate:** da/dN = 1.0-2.5 × 10⁻⁸ m/cycle (ΔK=20 MPa√m) **Physical Properties:** - **Density:** 7.35-7.45 g/cm³ - **Melting Range:** 1170-1240°C - **Thermal Conductivity:** 32-38 W/m·K at 20°C - **Specific Heat:** 440-470 J/kg·K - **Thermal Expansion:** 10.0-10.8 × 10⁻⁶/°C (20-200°C) - **Electrical Resistivity:** 0.42-0.50 μΩ·m - **Damping Capacity:** 2-4× better than comparable alloy steels - **Magnetic Properties:** Ferromagnetic with good permeability ### **5. Advanced Heat Treatment Process** **Four-Stage Precision Thermal Processing:** 1. **Stage 1 - Super-Critical Graphitization** - Temperature: 940-970°C (precise control required) - Time: 4-12 hours with multi-zone programming - Atmosphere: Controlled neutral with dew point -10 to -20°C - Result: Complete carbide decomposition with minimal grain growth 2. **Stage 2 - Multi-Step Austenitization** - Initial Soak: 800-820°C for 1 hour (temperature equalization) - Final Austenitization: 870-900°C for 1.5-2.5 hours - Carbon Potential Control: 0.8-1.0% to prevent decarburization - Grain Size Control: ASTM 8-10 (ultra-fine grain) 3. **Stage 3 - Controlled Intensive Quenching** - Quenching Medium: High-velocity oil or advanced polymer solution - Cooling Rate: 80-150°C/second at surface - Quench Uniformity: Agitation and temperature control critical - Result: Predominantly martensitic structure with minimal retained austenite 4. **Stage 4 - Multi-Temperature Tempering** - Low Temperature: 180-220°C for 2 hours (stress relief) - Intermediate Temperature: 350-400°C for 2-3 hours (toughness optimization) - High Temperature: 480-520°C for 2-3 hours (secondary hardening) - Final Stabilization: 150-180°C for 1 hour (dimensional stability) **Final Microstructure Characteristics:** - **Matrix:** Tempered martensite with fine carbides (90-98%) - **Temper Carbon:** Ultra-fine, well-dispersed aggregates - **Prior Austenite Grain Size:** ASTM 8-10 (≤ 0.022 mm) - **Martensite Lath Width:** 0.2-1.0 μm - **Carbide Size:** 0.03-0.15 μm (nanoscale distribution) - **Retained Austenite:** < 2% - **Inclusion Rating:** ASTM E45 Method A, ≤ 1.0 - **Microcleanliness:** Oxygen content ≤ 30 ppm ### **6. Manufacturing Requirements** **Foundry Capabilities:** - **Melting:** Vacuum or controlled atmosphere induction melting - **Charge Materials:** Ultra-high purity base materials - **Inoculation:** Advanced nano-inoculation technology - **Pouring Control:** ±5°C temperature control - **Molding:** Ceramic or precision sand molding systems - **Quality Systems:** IATF 16949 or equivalent required **Machinability Considerations:** - **Machinability Rating:** 40-55% of B1112 steel - **Cutting Speed:** 40-80 m/min with advanced tooling - **Feed Rate:** 0.08-0.15 mm/rev - **Tool Requirements:** PVD-coated carbide, CBN, or ceramic tools - **Coolant:** High-performance synthetic coolant required - **Surface Finish:** 0.4-1.2 μm Ra achievable under optimal conditions ### **7. Product Applications** **Extreme-Performance Automotive:** - **Racing and high-performance powertrain components** - **Heavy-duty truck components under maximum stress** - **Specialized military and defense vehicle parts** - **High-performance brake system components** **Critical Industrial Applications:** - **Mining and mineral processing:** Crusher components, grinding mill parts - **Oil and gas industry:** High-pressure drilling tools, valve components - **Power generation:** Turbine and generator components - **Steel production:** Rolling mill components, guide systems** **Specialized High-Performance Uses:** - **Aerospace ground support equipment** - **High-security and ballistic protection systems** - **Heavy industrial tooling and wear parts** - **Special machinery in extreme environments** ### **8. Design Engineering Guidelines** **Critical Design Parameters:** - **Optimal Wall Thickness:** 4-15 mm - **Maximum Uniform Section:** 25 mm - **Minimum Fillet Radius:** 5 mm (8 mm preferred) - **Stress Concentration Factor:** Kt ≤ 1.5 recommended - **Section Transitions:** Gradual with maximum 15° angle **Allowable Design Stresses:** - **Static Design Stress:** 200-250 MPa (29,000-36,300 psi) - **Fatigue Design Stress:** 150-200 MPa (21,800-29,000 psi) - **Safety Factors:** 3.5-4.0 for dynamic loading - **Proof Test Load:** 1.5× design load recommended **Geometric Considerations:** - **Avoid sharp corners and notches** - **Use generous radii at all transitions** - **Consider directional solidification in design** - **Design for uniform cooling during quenching** ### **9. Quality Assurance Protocol** **Mandatory Testing Requirements:** 1. **Chemical Analysis:** Each melt (ICP-OES or glow discharge) 2. **Mechanical Testing:** Multiple tensile tests from keel blocks 3. **Hardness Mapping:** 9-point minimum per casting type 4. **Microstructural Analysis:** 100% verification at 500-1000× 5. **Non-Destructive Testing:** UT, MT, or RT as specified **Advanced Testing (Typically Required):** - **High-Cycle Fatigue Testing:** S-N curves to 10⁹ cycles - **Fracture Toughness Testing:** ASTM E1820 - **Residual Stress Analysis:** Hole-drilling or X-ray diffraction - **Metallographic Analysis:** SEM/TEM for carbide characterization - **Wear Testing:** ASTM G65 or G77 standard tests **Certification Requirements:** - **Material Certificate:** EN 10204 3.2 Type - **Full Traceability:** From raw material to finished part - **Process Records:** Complete thermal history documentation - **Statistical Process Control:** Cp ≥ 1.67, Cpk ≥ 1.33 ### **10. Comparative Analysis** **Performance Comparison:** | Property | Class 80002 vs. 70003 | Class 80002 vs. 4340 Steel | |----------|------------------------|----------------------------| | **Tensile Strength** | +15-20% higher | Comparable | | **Yield Strength** | +10-15% higher | Slightly lower (5-10%) | | **Ductility** | 25-35% lower | Significantly lower | | **Wear Resistance** | 20-30% better | Comparable with treatment | | **Damping Capacity** | 20-25% better | 3-5× better | | **Cost (Complex Parts)** | 60-70% of steel | Reference (100%) | **Economic Advantages:** - **Manufacturing Cost:** 40-60% lower than forged equivalents - **Material Utilization:** 85-95% vs. 40-60% for machining from billet - **Lead Time:** 50-70% shorter than custom forgings - **Tooling Cost:** Lower for complex geometries ### **11. Technical Limitations & Considerations** **Material Constraints:** - **Maximum Service Temperature:** 300°C continuous - **Weldability:** Generally not recommended - **Impact Toughness:** Limited at sub-zero temperatures - **Size Limitations:** Maximum weight typically 50-100 kg - **Production Volume:** Economical at medium volumes (100-10,000 pieces) **Processing Limitations:** - **Requires specialized foundry expertise** - **Limited global production capability** - **Extended lead times for process development** - **Higher scrap rates than standard grades** ### **12. Economic & Supply Chain Factors** **Cost Structure Analysis:** - **Raw Material Cost:** 2.0-2.5× Class 70003 - **Processing Cost:** High due to advanced thermal treatment - **Quality Control Cost:** 15-25% of total manufacturing cost - **Tooling & Setup:** Similar to other premium cast irons **Supply Chain Considerations:** - **Limited qualified suppliers worldwide** - **Extended qualification periods (6-12 months)** - **Higher minimum order quantities** - **Technical collaboration essential for success** ### **13. Future Developments** **Technical Innovation Areas:** 1. **Nanostructure Engineering:** For improved toughness at high strength 2. **Additive Manufacturing Integration:** Hybrid manufacturing approaches 3. **Smart Processing:** AI/ML optimization of heat treatment parameters 4. **Advanced Characterization:** Real-time microstructure monitoring **Market Trends:** - **Growing adoption** in electrified heavy equipment - **Increased use** in renewable energy infrastructure - **Development** of specialized variants for extreme environments - **Expansion** into emerging high-tech industries ### **14. Implementation Guidelines** **Success Factors:** 1. **Early Supplier Involvement:** Critical for design optimization 2. **Prototype Development:** Essential for process validation 3. **Comprehensive Testing:** Extensive validation before production 4. **Continuous Monitoring:** Statistical process control during production **Risk Mitigation:** - **Dual sourcing strategy** where possible - **Comprehensive failure mode analysis** - **Conservative design margins** - **Regular supplier audits and assessments** ### **15. Conclusion** **Class 80002** represents the **pinnacle of traditional malleable iron technology**, delivering unprecedented strength levels while maintaining the manufacturing advantages of cast components. This grade serves critical applications where extreme strength, wear resistance, and component complexity intersect in ways that no other material can economically address. The successful application of Class 80002 requires: - **Sophisticated technical capability** from both supplier and customer - **Significant investment** in process development and validation - **Conservative design philosophy** accounting for material limitations - **Rigorous quality assurance** throughout the manufacturing chain While representing a niche segment of the overall cast iron market, Class 80002 provides irreplaceable value in applications where its unique combination of properties justifies the premium cost and manufacturing complexity. As manufacturing technologies continue to evolve, this grade will likely see expanded application in next-generation engineering challenges. **Technical Recommendation:** Class 80002 should only be specified after exhaustive evaluation of alternatives and with full understanding of its capabilities and constraints. The investment in proper development and validation is essential for successful implementation. -:- For detailed product information, please contact sales. -: Malleable iron casting, Class 80002 Specification Dimensions Size： Diameter 20-1000 mm Length <6582 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. -: Malleable iron casting, Class 80002 Properties -:- For detailed product information, please contact sales. -:

Applications of Malleable Iron Flange casting, Class 80002 -:- For detailed product information, please contact sales. -: Chemical Identifiers Malleable Iron Flange casting, Class 80002 -:- For detailed product information, please contact sales. -:

Packing of Malleable Iron Flange casting, Class 80002 -:- 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 3053 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