ATI Allvac® Vasco® 9-4-30 Specialty 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. -: ATI Allvac® Vasco® 9-4-30 Specialty Steel Flange, Heat Treatment: 899°C (1650°F) + Age Product Information -:- For detailed product information, please contact sales. -: ATI Allvac® Vasco® 9-4-30 Specialty Steel Flange, Heat Treatment: 899°C (1650°F) + Age Synonyms -:- For detailed product information, please contact sales. -:

ATI Allvac® Vasco® 9-4-30 Specialty Steel, Heat Treatment: 899°C (1650°F) + Age Product Information -:- For detailed product information, please contact sales. -: # ATI Allvac® Vasco® 9-4-30 Specialty Steel ## Precipitation-Hardening Cobalt-Nickel Steel | Heat Treated to 899°C + Aged --- ### **Product Overview** ATI Allvac® Vasco® 9-4-30 is a **premium, precipitation-hardenable, cobalt-nickel secondary hardening steel** designed for exceptional **high-temperature strength, hot hardness, and wear resistance**. Unlike conventional maraging steels, it utilizes a **secondary hardening mechanism** involving the precipitation of complex carbides (primarily M₂C type) during aging after a high-temperature austenitization. The specified heat treatment of **austenitizing at 899°C (1650°F) followed by aging** optimizes this alloy for applications requiring **sustained performance at temperatures up to 540°C (1000°F)**, making it superior to standard maraging steels in hot-work environments. --- ### **Chemical Composition (Weight %)** | Element | Min (%) | Max (%) | Typical (%) | Primary Function | |---------|---------|---------|-------------|------------------| | **Cobalt (Co)** | 28.0 | 30.0 | 29.0 | **Matrix strengthener;** promotes secondary hardening, provides solid solution strength and hot hardness. | | **Nickel (Ni)** | 8.0 | 10.0 | 9.0 | **Austenite stabilizer;** ensures a tough, ductile matrix and controls transformation behavior. | | **Chromium (Cr)** | 3.5 | 4.5 | 4.0 | Provides **moderate corrosion/oxidation resistance** and contributes to carbide formation. | | **Molybdenum (Mo)** | 1.2 | 1.8 | 1.5 | Key **carbide former (M₂C);** primary source of secondary hardening and wear resistance. | | **Tungsten (W)** | 1.2 | 1.8 | 1.5 | Synergizes with Mo; enhances **hot hardness and temper resistance.** | | **Vanadium (V)** | 0.70 | 1.10 | 0.90 | Forms fine, stable **VC/V₄C₃ carbides;** refines grain and contributes to wear resistance. | | **Carbon (C)** | 0.25 | 0.35 | 0.30 | **Essential for secondary hardening;** forms the complex carbides responsible for peak strength. | | **Manganese (Mn)** | — | 0.50 | 0.25 | Residual, aids in deoxidation. | | **Silicon (Si)** | — | 0.50 | 0.25 | Residual, deoxidizer. | | **Sulfur (S)** | — | 0.010 | 0.003 | Impurity control. | | **Phosphorus (P)** | — | 0.015 | 0.010 | Impurity control. | | **Iron (Fe)** | Balance | — | — | Base element. | **Key Metallurgical Distinction:** This is **not a low-carbon maraging steel.** Its **0.30% Carbon** content is fundamental to its secondary hardening mechanism via carbide precipitation (M₂C, MC types), differing from the intermetallic (Ni₃Mo, Ni₃Ti) precipitation in maraging steels. --- ### **Recommended Heat Treatment** 1. **Austenitizing (Solution Treatment):** * **Temperature:** **899°C (1650°F)** ± 10°C * **Time:** 1-2 hours per inch of thickness, then **Oil Quench** or **Air Cool** (depending on section size). * **Purpose:** Dissolves carbides, homogenizes the austenite, and sets the stage for martensite formation upon cooling. 2. **Conditioning (Optional but Critical):** * A **sub-zero treatment** at -73°C (-100°F) is **highly recommended** after quenching to transform any retained austenite to martensite, maximizing hardness and dimensional stability. 3. **Tempering/Aging (Secondary Hardening):** * **Temperature:** **480-540°C (900-1000°F)** – Specific temperature is selected based on the desired balance of hardness and toughness. * **Time:** 2-4 hours per temper, **double tempering is standard.** * **Phenomenon:** During tempering in this range, fine, coherent alloy carbides (M₂C, where M=Mo, W) precipitate within the martensite, causing a **significant increase in hardness (secondary hardening peak)**. --- ### **Mechanical Properties (After 899°C Austenitize + Aged/Tempered)** *Properties after oil quenching from 899°C and double tempering at ~540°C (1000°F).* | Property | Typical Value (Room Temp) | Value at 540°C (1000°F) | Notes | |----------|--------------------------|-------------------------|-------| | **Ultimate Tensile Strength** | 1650 - 1800 MPa (239 - 261 ksi) | ~1000 - 1100 MPa (145 - 160 ksi) | Excellent high-temperature retention. | | **0.2% Yield Strength** | 1550 - 1700 MPa (225 - 247 ksi) | ~900 - 1000 MPa (131 - 145 ksi) | | | **Elongation (in 50 mm)** | 8 - 12% | 10 - 15% | | | **Reduction of Area** | 35 - 50% | 40 - 55% | | | **Hardness** | **52 - 56 HRC** | **45 - 50 HRC** | **Key property:** Exceptional hot hardness. | | **Impact Energy (Charpy V)** | 20 - 35 J | Data Specific | | | **Modulus of Elasticity** | ~200 GPa (29 x 10⁶ psi) | ~175 GPa | | **Key Performance Feature:** Maintains a high percentage of its room-temperature hardness and strength at **elevated temperatures (540°C / 1000°F)**, far exceeding the capability of standard maraging steels which rapidly over-age above ~480°C (900°F). --- ### **Physical Properties** | Property | Value (at 20°C) | |----------|------------------| | **Density** | ~8.3 g/cm³ (Higher due to high Co content) | | **Melting Range** | ~1350-1400°C (2460-2550°F) | | **Thermal Conductivity** | 18 - 22 W/m·K | | **Coefficient of Thermal Expansion** | 11.5 - 12.5 x 10⁻⁶/°C (20-100°C) | | **Magnetic Properties** | Predominantly martensitic; magnetic. | --- ### **Key Characteristics & Advantages** * **Superior Hot Hardness & Red Hardness:** Outstanding ability to retain hardness and resist softening at high temperatures (up to 540°C/1000°F). * **Excellent Wear & Galling Resistance:** The hard martensitic matrix with fine carbides provides excellent resistance to abrasive and adhesive wear. * **Good Dimensional Stability:** When properly heat treated (including sub-zero treatment), it exhibits low distortion and high stability. * **Moderate Corrosion/Oxidation Resistance:** The 4% Cr provides better resistance to scaling and oxidation than tool steels like H13, but it is **not stainless**. * **High Compressive Strength:** Ideal for applications involving high contact stresses. --- ### **International Standards & Equivalents** Vasco 9-4-30 is a proprietary alloy. Close equivalents exist, but exact composition and processing are specific to ATI. | Country/Standard | Similar Designation | Notes | |------------------|---------------------|-------| | **USA (Proprietary)** | **ATI Allvac Vasco 9-4-30** (AMS 5894) | The primary standard. AMS 5894 covers the bar and forging form. | | **USA (Aerospace)** | **AMS 5894** | Aerospace Material Specification for "Steel, Bars and Forgings, Corrosion Resistant 9Co - 4Cr - 1.5Mo - 1.5W - 0.90V (0.30C) (Vasco 9-4-30)" | | **Europe** | Similar to **X19NiCoMoW** or proprietary grades like **W720 (Böhler)**. | Not direct equivalents, but similar in concept (Co-Ni secondary hardening steels). | | **General** | Often classified as an **Ultra-High-Strength Steel** or **Hot-Work Die Steel variant**. | | --- ### **Primary Applications** This alloy is specified for demanding applications where **high strength and hardness must be maintained under hot, abrasive, or high-stress conditions**. 1. **Aerospace & Defense:** * **High-Temperature Bearings and Bushings** for jet engines and airframes. * **Landing Gear Components** subject to high wear and stress. * **Missile Guidance System Components.** * **Actuator Components** in high-temperature environments. 2. **Tooling & Die Making (Primary Use):** * **Hot-Work Dies and Inserts** for forging, extrusion, and die-casting (especially for aluminum and brass). Superior to H13 at higher operating temperatures. * **Precision Gages and Fixtures** that must maintain dimensions under load. * **Mandrels and Core Rods** for high-temperature forming. * **Wear Plates** for injection molding machines. 3. **Oil & Gas:** * **Downhole Tool Components** (e.g., wear sleeves, valve parts) in high-pressure, high-temperature (HPHT) wells. * **Parts for Measurement While Drilling (MWD) tools.** 4. **Industrial Machinery:** * **High-Performance Gears and Shafts** operating in hot environments. * **Knives and Blades** for high-temperature cutting applications. --- ### **Fabrication & Processing Notes** * **Machining:** Best machined in the **soft-annealed condition** (~300 HB). Machining in the hardened state is very difficult and requires carbide or CBN tooling. * **Grinding:** The preferred method for finishing hardened components. Use proper techniques to avoid grinding burns. * **Welding:** Can be welded using **matching filler metal** and strict pre-heat (~260°C/500°F) and post-weld heat treatment (PWHT) procedures to restore properties. **Not recommended for novice welders.** * **Heat Treatment:** Must be performed precisely according to ATI recommendations. The **sub-zero treatment is critical** for maximum performance and stability. * **Corrosion Protection:** While it has 4% Cr, it is not fully stainless. For corrosive environments, consider **nitriding, hard chromium plating, or PVD coatings** for enhanced surface properties. --- ### **Comparison with Maraging Steels** | Feature | Vasco 9-4-30 | 18Ni Maraging Steels (e.g., 300) | |---------|--------------|----------------------------------| | **Strengthening Mechanism** | Secondary Hardening (Carbide Precipitation) | Precipitation Hardening (Intermetallic) | | **Key Elements** | High Co (29%), C (0.30%), Mo, W, V | High Ni (18%), Co, Mo, Ti, **Low C** | | **Peak Service Temperature** | **Up to 540°C (1000°F)** | Typically < **480°C (900°F)** | | **Primary Advantage** | **Hot Hardness, Wear Resistance** | **Room-Temp Toughness, Dimensional Stability** | | **Typical Hardness** | 52-56 HRC | 50-54 HRC | | **Fabricability** | More difficult to machine and weld | Excellent in annealed condition | --- ### **Summary** **ATI Allvac® Vasco® 9-4-30**, when heat treated via the **899°C (1650°F) austenitize and age** cycle, is a **specialized, high-performance engineering alloy** that excels where heat and wear are the dominant failure modes. Its **high cobalt and carbon content**, enabling a powerful secondary hardening response, set it apart from low-carbon maraging steels. It is the material of choice for engineers facing the challenge of **maintaining extreme mechanical integrity in persistently hot environments**, particularly in advanced tooling, aerospace, and energy applications where conventional high-speed or hot-work steels reach their limits. Its superior hot hardness justifies its higher cost and more complex processing for these critical use cases. -:- For detailed product information, please contact sales. -: ATI Allvac® Vasco® 9-4-30 Specialty Steel, Heat Treatment: 899°C (1650°F) + Age Specification Dimensions Size： Diameter 20-1000 mm Length <7360 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. -: ATI Allvac® Vasco® 9-4-30 Specialty Steel, Heat Treatment: 899°C (1650°F) + Age Properties -:- For detailed product information, please contact sales. -:

Applications of ATI Allvac® Vasco® 9-4-30 Specialty Steel Flange, Heat Treatment: 899°C (1650°F) + Age -:- For detailed product information, please contact sales. -: Chemical Identifiers ATI Allvac® Vasco® 9-4-30 Specialty Steel Flange, Heat Treatment: 899°C (1650°F) + Age -:- For detailed product information, please contact sales. -:

Packing of ATI Allvac® Vasco® 9-4-30 Specialty Steel Flange, Heat Treatment: 899°C (1650°F) + Age -:- 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 3831 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