Astralloy 4800® Wear Resistant Steel 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. -: Astralloy 4800® Wear Resistant Steel Flange Product Information -:- For detailed product information, please contact sales. -: Astralloy 4800® Wear Resistant Steel Flange Synonyms -:- For detailed product information, please contact sales. -:

Astralloy 4800® Wear Resistant Steel Product Information -:- For detailed product information, please contact sales. -: # **Astralloy 4800® Wear Resistant Steel Plate** --- ## **1. Product Overview** Astralloy 4800® is a premium **medium-carbon, low-alloy, quenched and tempered** abrasion-resistant steel plate designed to deliver outstanding performance in moderately severe to severe wear environments. It achieves an optimal balance between high surface hardness, good toughness, and excellent weldability. The product is supplied in the **fully heat-treated condition**, ready for fabrication and immediate use, providing reliable and cost-effective wear protection for a wide range of industrial applications. --- ## **2. Key Features & Advantages** * **Superior Wear Resistance:** Delivers a nominal hardness of **480 Brinell (HB)** minimum, translating to excellent resistance to abrasive wear and material degradation. * **Optimal Toughness:** The quenched and tempered microstructure provides superior impact resistance and fracture toughness compared to higher hardness, more brittle materials, making it ideal for applications involving moderate impact. * **Excellent Fabricability:** Exhibits significantly better weldability, formability, and machinability than higher carbon-equivalent steels (e.g., 500+ HB grades), reducing fabrication costs and complexity. * **Ready-to-Use:** Supplied in the final hardened and tempered condition, eliminating the need for and risks associated with post-fabrication heat treatment. * **Proven Reliability:** Consistent metallurgical properties and through-thickness hardness ensure predictable performance and extended service life. --- ## **3. Chemical Composition (Typical Weight %)** The chemical composition of Astralloy 4800® is carefully balanced to achieve its signature combination of hardness, toughness, and weldability. | Element | Content (%) | Role | | :--- | :--- | :--- | | **Carbon (C)** | 0.20 - 0.28 | Primary hardening element; provides strength and wear resistance. | | **Manganese (Mn)** | 1.00 - 1.50 | Increases hardenability and strength; aids in deoxidation. | | **Silicon (Si)** | 0.30 - 0.60 | Deoxidizer; increases strength and hardness. | | **Chromium (Cr)** | 0.40 - 0.80 | Enhances hardenability, wear, and corrosion resistance. | | **Molybdenum (Mo)** | 0.15 - 0.30 | Increases hardenability (especially in thick sections) and strength at elevated temperatures. | | **Boron (B)** | 0.001 - 0.005 | Powerful hardenability enhancer, allowing leaner overall alloy content for better weldability. | | **Phosphorus (P)** | ≤ 0.020 | Impurity; controlled to low levels to ensure toughness. | | **Sulfur (S)** | ≤ 0.008 | Impurity; controlled to very low levels to improve through-thickness properties and weldability. | | *(Other micro-alloying elements such as Ni, V, or Ti may be added for specific property enhancements.)* | | | --- ## **4. Physical & Mechanical Properties** ### **4.1 Mechanical Properties (Typical)** * **Hardness:** **480 - 530 HB** (Approx. 51 - 54 HRC) nominal bulk hardness. * **Yield Strength (Rp0.2):** ≥ **1200 MPa** (≥ 174 ksi) * **Tensile Strength (Rm):** ≥ **1350 MPa** (≥ 196 ksi) * **Elongation at Break (A₅):** ≥ **12%** * **Impact Toughness (Charpy V-notch, @ -20°C / -4°F):** ≥ **25 J** (≥ 18 ft-lb) – Specific values depend on plate thickness. ### **4.2 Physical Properties** * **Density:** 7.85 g/cm³ (0.284 lb/in³) * **Modulus of Elasticity:** 210 GPa (30 x 10⁶ psi) * **Poisson's Ratio:** 0.29 * **Thermal Conductivity:** ~46 W/(m·K) at 20°C * **Coefficient of Thermal Expansion:** 11.5 x 10⁻⁶ /K (20-100°C range) --- ## **5. Fabrication Guidelines** ### **5.1 Cutting** * **Flame Cutting:** Requires preheating to **150-200°C (300-400°F)** to avoid hydrogen-induced cracking (HIC). Slow, uniform cooling is recommended. * **Plasma & Laser Cutting:** Excellent results; minimal heat-affected zone (HAZ). * **Mechanical Cutting (Shearing, Sawing):** Suitable; requires high-quality tooling designed for high-strength steels. ### **5.2 Welding (A Critical Advantage)** Astralloy 4800® is renowned for its superior weldability in its hardness class. * **Preheat Temperature:** **100-150°C (212-300°F)** is typically sufficient for most thicknesses, significantly lower than for 500+ HB grades. * **Interpass Temperature:** Maintain below **250°C (480°F)**. * **Filler Metal:** Use low-hydrogen electrodes/wires with **matching or slightly under-matching strength** (e.g., 480-550 MPa yield strength). Common choices include AWS E11018-M, ER110S-G, or equivalent. * **Post-Weld Treatment:** **Stress relieving is generally not required** for most applications, but slow cooling under insulation is recommended. ### **5.3 Forming & Machining** * **Cold Bending:** Possible with a minimum bend radius of **4-5 times the plate thickness (t)**. * **Machining:** Requires carbide-tipped tools with positive rake angles, adequate cooling, and lower speeds/feeds than mild steel. --- ## **6. International Standards & Equivalents** Astralloy 4800® aligns with several international standards for high-strength wear-resistant steels. It is a proprietary grade that often exceeds the base requirements of these standards. | Standard | Equivalent / Comparable Grade | Key Specification | | :--- | :--- | :--- | | **ASTM A514 / A517** | Grade H / Q | Quenched & Tempered Alloy Steel Plate | | **EN 10025-6** | S460Q / S460QL | Quenched & Tempered Fine Grain Structural Steel | | **ISO 4950-3** | Q460QR / Q500QR | High Yield Strength Quenched & Tempered Plate | | **JIS G3124** | SHY685 (Similar strength level) | High Yield Strength Steel Plates | | **Common Industry Designation** | **AR450 / AR500** (Performance Equivalent) | Abrasion-Resistant Steel Plate | **Note:** While comparable to AR450/AR500 in application, Astralloy 4800® typically offers superior toughness and weldability due to its optimized chemistry and processing. --- ## **7. Typical Applications** Astralloy 4800® is the material of choice for components subjected to significant abrasion combined with moderate to high impact loads. * **Mining & Quarrying:** Dump truck body liners, bucket liners for loaders and excavators, chute and hopper liners, crusher feed plates, screen decks. * **Construction & Earthmoving:** Excavator bucket wear plates, cutting edges (base plates), grader blades, ripper shanks, conveyor scraper blades. * **Material Handling:** Skirt board seals, impact bars in conveyor transfer points, vibratory feeder pans, bucket elevator components. * **Forestry & Recycling:** Chipper anvils and housing liners, shredder hammer tips (for moderate impact), log grapple wear plates. * **Agriculture:** Plowshares, subsoiler points, combine harvester feeder house and grain tank wear surfaces. --- ## **8. Availability** * **Thickness Range:** Typically from 6 mm (0.25") up to 100 mm (4") or more, depending on the producer. * **Width & Length:** Standard mill sizes; can often be supplied cut-to-size or profile-cut. --- **Disclaimer:** This document provides general information. For specific design, fabrication, or welding procedures, always consult the official technical data sheets from the material producer or supplier. Properties and recommendations may vary with plate thickness and specific manufacturing lot. "Astralloy" and "Astralloy 4800" are assumed to be registered trademarks. -:- For detailed product information, please contact sales. -: Astralloy 4800® Wear Resistant Steel Specification Dimensions Size： Diameter 20-1000 mm Length <7074 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. -: Astralloy 4800® Wear Resistant Steel Properties -:- For detailed product information, please contact sales. -:

Applications of Astralloy 4800® Wear Resistant Steel Flange -:- For detailed product information, please contact sales. -: Chemical Identifiers Astralloy 4800® Wear Resistant Steel Flange -:- For detailed product information, please contact sales. -:

Packing of Astralloy 4800® Wear Resistant Steel 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 3545 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