1800 Maraging 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. -: 1800 Maraging Steel Flange Product Information -:- For detailed product information, please contact sales. -: 1800 Maraging Steel Flange Synonyms -:- For detailed product information, please contact sales. -:

1800 Maraging Steel Product Information -:- For detailed product information, please contact sales. -: # 1800 Maraging Steel (18Ni-1800 MPa Grade) ## **Overview** **1800 Maraging Steel** (also commonly referred to as **18Ni-1800** or **Grade 1800**) is a high-strength, low-carbon martensitic steel belonging to the **18% Nickel Maraging Steel** family. It is designed to achieve a nominal yield strength of **approximately 1800 MPa (260 ksi)** after a standard precipitation hardening (aging) treatment. This grade represents a **lower-strength, higher-toughness variant** within the maraging steel family, optimized for applications requiring an excellent balance of strength, fracture toughness, and fabricability, where the extreme strength of grades like 2500 or 300 is not required. --- ## **Chemical Composition (Weight %)** | Element | Min (%) | Max (%) | Typical (%) | Function | |---------|---------|---------|-------------|----------| | **Nickel (Ni)** | 17.0 | 19.0 | 18.0 | Forms tough, ductile martensitic matrix. | | **Cobalt (Co)** | 7.0 | 8.5 | 8.0* | Controls kinetics of Mo precipitation; critical for age-hardening response. | | **Molybdenum (Mo)** | 3.0 | 5.0 | 4.8* | Primary precipitation hardener; forms Ni₃Mo intermetallics. | | **Titanium (Ti)** | 0.15 | 0.35 | 0.25* | Secondary precipitation hardener; forms Ni₃Ti. | | **Aluminum (Al)** | 0.05 | 0.15 | 0.10 | Deoxidizer; minor precipitation contributor. | | **Carbon (C)** | — | 0.03 | 0.01 | Kept minimal for weldability and toughness. | | **Manganese (Mn)** | — | 0.10 | 0.05 | Residual. | | **Silicon (Si)** | — | 0.10 | 0.05 | Residual. | | **Boron (B)** | — | 0.005 | 0.003 | Enhances hardenability. | | **Zirconium (Zr)** | — | 0.02 | 0.01 | Grain refiner. | | **Sulfur (S)** | — | 0.01 | 0.003 | Impurity control. | | **Phosphorus (P)** | — | 0.01 | 0.005 | Impurity control. | | **Iron (Fe)** | Balance | — | — | Base element. | *Note: The exact composition, particularly of Co, Mo, and Ti, is proprietary and varies among manufacturers to achieve the target 1800 MPa yield strength with optimal toughness.* --- ## **Standard Heat Treatment** 1. **Solution Annealing:** * **Temperature:** 815-830°C (1500-1525°F) * **Time:** 1 hour per inch of thickness, then **Air Cool**. * **Result:** Soft, ductile martensite with hardness ~28-32 HRC. 2. **Aging (Precipitation Hardening):** * **Temperature:** 480-500°C (900-930°F) * **Time:** 3-6 hours (depending on section size), then **Air Cool**. * **Result:** Peak strength through uniform precipitation of intermetallic phases. --- ## **Mechanical Properties (Aged Condition)** *Typical minimum or average values for longitudinal specimens.* | Property | Value | Notes | |----------|-------|-------| | **0.2% Yield Strength (YS)** | 1700 - 1850 MPa (247 - 268 ksi) | Nominal: **1800 MPa (260 ksi)** | | **Ultimate Tensile Strength (UTS)** | 1800 - 1900 MPa (261 - 275 ksi) | | | **Elongation (in 50 mm)** | 10 - 14% | Excellent for this strength level | | **Reduction of Area** | 50 - 65% | | | **Hardness** | 48 - 52 HRC | | | **Fracture Toughness (K_IC)** | **90 - 120 MPa√m** | **Key Advantage:** Significantly higher than Grade 2500 or 300. | | **Modulus of Elasticity** | 185 GPa (26.8 x 10⁶ psi) | | | **Fatigue Strength (10⁷ cycles)** | ~600-700 MPa | Highly dependent on surface finish. | --- ## **Physical Properties (Aged)** | Property | Value | |----------|-------| | **Density** | 8.0 g/cm³ (0.289 lb/in³) | | **Melting Range** | ~1400-1440°C (2550-2625°F) | | **Thermal Conductivity (20°C)** | 20 W/m·K | | **Coefficient of Thermal Expansion (20-100°C)** | 10.5 x 10⁻⁶ /°C | | **Electrical Resistivity** | 0.6 μΩ·m | | **Magnetic Properties** | Ferromagnetic | --- ## **Key Characteristics & Advantages** * **Optimal Strength-Toughness Balance:** Provides significantly higher fracture toughness than higher-strength maraging grades (2500, 300, 350), making it more damage-tolerant. * **Excellent Fabricability:** Easier to machine, form, and weld in the annealed condition compared to higher-grade maraging steels. * **Good Weldability:** Can be welded using standard maraging filler metals; post-weld heat treatment is simpler. * **Dimensional Stability:** Minimal distortion during aging. * **High Strength-to-Weight Ratio:** While not the absolute strongest, it offers a superior combination of strength, weight savings, and reliability. --- ## **International Standards & Designations** This grade is often covered under proprietary designations or specific aerospace standards. Common references include: | Standard/System | Designation | Notes | |----------------|-------------|-------| | **Proprietary/Trade Names** | **VascoMax 180**, **Marval 18-180**, **18Ni(1800)** | Common manufacturer names. | | **Aerospace (AMS)** | May be covered under **AMS 6512** or similar, depending on manufacturer and specific chemistry. | Often specified by a Source Control Drawing (SCD). | | **Unified Numbering System (UNS)** | Often grouped under **K92890** (shared with other 18Ni grades), requiring additional specification. | | | **ISO** | No direct equivalent; falls under general precipitation-hardening steel category. | | --- ## **Typical Applications** 1800 Maraging Steel is chosen where high strength is required, but **toughness, reliability, and ease of fabrication are equally or more important** than achieving the absolute maximum strength. * **Aerospace:** * **Aircraft Landing Gear Components** (forgings, housings). * **Missile and Rocket Motor Cases** (where high pressure resistance is needed with good fracture toughness). * **Helicopter Rotor Hubs and Components.** * **Structural Airframe Fittings and Brackets.** * **Defense & Ordnance:** * **Gun Barrel Components and Breech Mechanisms.** * **Armor Vehicle Components.** * **High-Strength Fasteners and Pins.** * **Tooling & Industrial:** * **High-Performance Plastic Injection Molds** (cores, cavities). * **Die-Casting Dies** for aluminum and magnesium. * **Extrusion Press Components.** * **Precision Shafts and Gears** in high-load machinery. * **Racing & High-Performance Automotive:** * **Connecting Rods, Crankshafts.** * **Suspension Components.** --- ## **Fabrication Notes** * **Machining:** Best performed in the **solution-annealed** condition. Significantly easier than machining fully aged higher-grade maraging steels. * **Forming:** Should be formed in the annealed state. * **Welding:** Use GTAW (TIG) with matching filler wire (e.g., ER18Ni). Post-weld heat treatment (full re-solution and aging) is recommended for critical applications. * **Heat Treatment:** Final aging is a simple, low-temperature process with minimal distortion. * **Corrosion Protection:** Not stainless; requires coatings (cadmium, electroless nickel, paint) for corrosive environments. --- ## **Summary** **1800 Maraging Steel** is the **workhorse of the high-strength maraging family**. It delivers an outstanding and balanced set of properties: **very high strength (~1800 MPa YS), exceptional fracture toughness, and good manufacturability.** It is often the preferred choice over the ultra-high-strength grades (2500, 300, 350) when the design philosophy prioritizes **damage tolerance, reliability, and overall system performance** over squeezing out the last increment of strength. Its excellent balance makes it a versatile and widely used material in demanding aerospace, defense, and tooling applications. -:- For detailed product information, please contact sales. -: 1800 Maraging Steel Specification Dimensions Size： Diameter 20-1000 mm Length <7357 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. -: 1800 Maraging Steel Properties -:- For detailed product information, please contact sales. -:

Applications of 1800 Maraging Steel Flange -:- For detailed product information, please contact sales. -: Chemical Identifiers 1800 Maraging Steel Flange -:- For detailed product information, please contact sales. -:

Packing of 1800 Maraging 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 3828 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