AISI Type T2 Tungsten High Speed Tool Steel Flange (UNS T12002)

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. -: AISI Type T2 Tungsten High Speed Tool Steel Flange (UNS T12002) Product Information -:- For detailed product information, please contact sales. -: AISI Type T2 Tungsten High Speed Tool Steel Flange (UNS T12002) Synonyms -:- For detailed product information, please contact sales. -:

AISI Type T2 Tungsten High Speed Tool Steel (UNS T12002) Product Information -:- For detailed product information, please contact sales. -: # **Product Introduction: AISI Type T2 Tungsten High-Speed Tool Steel (UNS T12002)** ## **Overview** **AISI T2 (UNS T12002)** is a **standard tungsten-vanadium high-speed steel (HSS)** representing a balanced evolution within the classic T-series. As a direct successor to the original T1 (18-4-1), T2 features a **significantly increased vanadium content** (approximately 2%) which provides markedly improved abrasion resistance while maintaining the excellent red-hardness characteristic of tungsten-based HSS. It is a versatile, general-purpose tungsten HSS grade, often compared to the molybdenum-based M2, but distinguished by its higher tungsten content and different carbide structure. T2 is valued for applications requiring a good combination of wear resistance, hot hardness, and toughness. ## **1. Chemical Composition (Nominal %)** T2's composition refines the classic T1 formula with higher vanadium. | Element | Content (%) | Primary Function | |---------|------------|------------------| | **Carbon (C)** | 0.80 - 0.90 | Higher than T1 to balance the increased vanadium, ensuring sufficient carbon is available to form hard vanadium carbides. | | **Tungsten (W)** | 17.50 - 19.00 | **Primary element.** Provides the foundation for exceptional red-hardness and hot strength through the formation of stable tungsten carbides. | | **Chromium (Cr)** | 3.75 - 4.50 | Ensures hardenability and provides oxidation resistance. | | **Vanadium (V)** | 1.80 - 2.40 | **Key differentiating element.** Doubled compared to T1. Forms hard, wear-resistant vanadium carbides (VC), significantly improving abrasion resistance and refining grain structure. | | **Molybdenum (Mo)** | ≤ 0.50 (Residual) | Not an intentional primary alloy. | | **Cobalt (Co)** | Not specified | The base T2 grade does not contain cobalt. | | **Iron (Fe)** | Balance | Base metal. | **Key Chemistry Note:** T2 is essentially an **"18-4-2" steel**, evolving from T1's "18-4-1" by **doubling the vanadium content**. This strategic increase directly targets improved wear resistance, addressing a limitation of the original T1. The slightly higher carbon content (0.8-0.9% vs. T1's 0.65-0.80%) ensures adequate carbon is available to form these additional vanadium carbides. This composition results in a finer, more wear-resistant carbide distribution than T1, while retaining the same outstanding hot hardness from its high tungsten content. ## **2. Physical & Mechanical Properties** | Property | Typical Value / Condition | |----------|--------------------------| | **Density** | ~8.70 g/cm³ (High, due to tungsten) | | **Melting Point** | ~1425°C (2600°F) | | **Thermal Conductivity** | Low (~25 W/m·K) | | **Coefficient of Thermal Expansion** | ~10.6 × 10⁻⁶/K (20-600°C) | | **Modulus of Elasticity** | ~215 GPa (31.2 × 10⁶ psi) | | **Annealed Hardness** | 241-277 HB | | **Hardened & Tempered Hardness** | **63-66 HRC** (Common working range, similar to T1 but potentially more consistent). | | **Red Hardness** | **Excellent.** Comparable to T1; maintains hardness effectively up to ~600°C (1110°F). | | **Abrasion Resistance** | **Very Good to Excellent.** Superior to T1 due to the higher volume of vanadium carbides. Comparable to or slightly better than M2 in pure abrasion. | | **Toughness** | **Fair to Moderate.** Slightly lower than T1 due to the increased volume of hard, brittle vanadium carbides, but still acceptable for many HSS applications. | | **Tempering Temperature** | 540-600°C (1000-1110°F), **triple tempering is standard**. | | **Grindability** | **Poor** (~35-40% relative to M2). More difficult than T1 due to the higher vanadium carbide content. | ## **3. International Standards & Cross-References** T2 is a well-established international grade. | Standard | Designation | |----------|------------| | **UNS** | T12002 | | **AISI/ASTM (USA)** | T2 (ASTM A600) | | **ISO (International)** | **HS 18-0-2** (ISO 4957: Tool steels) | | **DIN (Germany)** | **1.3356** | | **JIS (Japan)** | **SKH3** | | **GB (China)** | **W18Cr4V2** (The "V2" denotes the higher vanadium content vs. T1's "W18Cr4V") | | **AFNOR (France)** | **HS 18-0-2** | | **Common Name** | **18-4-2 High-Speed Steel** | ## **4. Product Applications** T2 is suitable for a wide range of general and severe machining applications where both red-hardness and improved wear life are required. **Primary Applications:** * **General-Purpose High-Speed Cutting Tools:** **Twist drills, reamers, taps, end mills, and milling cutters** for machining alloy steels, cast irons, and some stainless steels. * **Form Tools and Cutters:** **Gear hobs, broaches, and shaping tools** where good edge retention and wear resistance over long production runs are important. * **Single-Point Tools:** **Lathe tools and planer tools** for high-speed turning and planing operations. * **Woodworking Tools:** **High-performance planer blades and router bits** for processed woods and composites. * **Cold Work Tooling:** **Punches, dies, and shear blades** requiring high wear resistance and some hot hardness. **Comparative Context:** * **vs. T1:** T2 provides **better wear resistance and longer tool life** in abrasive conditions, making it a preferred upgrade for many applications. It largely replaced T1 for general tungsten HSS use. * **vs. M2:** T2 typically offers **slightly better red-hardness and potentially better wear resistance** due to its higher tungsten and vanadium content. However, M2 generally has **better toughness and grindability** at a lower cost, leading to its dominance in the modern market. T2 is often chosen where its specific high-temperature performance is trusted or required by legacy specifications. ## **5. Processing & Heat Treatment Guidelines** Heat treatment follows classic high-speed steel practice, similar to T1 but with considerations for its higher carbon and vanadium. * **Forging:** Heat slowly to **1100-1150°C (2010-2100°F)**. Do not forge below **950°C (1740°F)**. Cool slowly. * **Annealing:** Heat to **850-870°C (1565-1600°F)**, hold, then furnace cool slowly to **500°C (930°F)**. * **Hardening (Austenitizing):** 1. **Preheating is critical:** Use two stages (e.g., 550-650°C then 800-850°C). 2. **Austenitize:** **1260-1290°C (2300-2355°F).** The temperature range is similar to T1, as the high tungsten still requires a very high temperature for carbide solution. 3. **Quench:** In salt bath, oil, or vacuum/gas. * **Tempering:** * **Temper immediately.** * Temper at **550-570°C (1020-1060°F)** for 2+ hours per cycle. * **Triple tempering is essential.** The higher alloy content necessitates complete transformation of retained austenite. ## **6. Modern Perspective** While T2 remains a capable and standardized HSS grade, its market share has significantly declined with the rise of the **M-series steels (especially M2 and M35)**. The molybdenum-based grades offer a more favorable cost structure, better manufacturability (especially grindability), and more consistent carbide distribution through modern melting practices. **Conclusion:** AISI T2 is a historically important **workhorse tungsten HSS** that successfully improved upon the wear resistance of the original T1. It represents a mature, high-performance option within the tungsten HSS family. For new designs, an M-series grade should typically be evaluated first for economic and practical reasons. However, T2 remains a valid and reliable choice for specific applications, particularly where its proven performance in high-temperature cutting is valued or where it is specified by established industry standards. --- **Disclaimer:** Like all tungsten HSS grades, T2 requires precise, high-temperature heat treatment and is difficult to grind. Its performance is highly dependent on correct processing. The information provided is for reference; always consult the specific material producer's technical data sheets for detailed heat treatment parameters and recommendations. -:- For detailed product information, please contact sales. -: AISI Type T2 Tungsten High Speed Tool Steel (UNS T12002) Specification Dimensions Size： Diameter 20-1000 mm Length <6767 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. -: AISI Type T2 Tungsten High Speed Tool Steel (UNS T12002) Properties -:- For detailed product information, please contact sales. -:

Applications of AISI Type T2 Tungsten High Speed Tool Steel Flange (UNS T12002) -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI Type T2 Tungsten High Speed Tool Steel Flange (UNS T12002) -:- For detailed product information, please contact sales. -:

Packing of AISI Type T2 Tungsten High Speed Tool Steel Flange (UNS T12002) -:- 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 3238 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