ATI Allegheny Ludlum A6 Tool Steel Flange, UNS T30106

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 Allegheny Ludlum A6 Tool Steel Flange, UNS T30106 Product Information -:- For detailed product information, please contact sales. -: ATI Allegheny Ludlum A6 Tool Steel Flange, UNS T30106 Synonyms -:- For detailed product information, please contact sales. -:

ATI Allegheny Ludlum A6 Tool Steel, UNS T30106 Product Information -:- For detailed product information, please contact sales. -: # **Product Introduction: ATI Allegheny Ludlum A6 Tool Steel (UNS T30106)** ## **1. Overview** **ATI Allegheny Ludlum A6 Tool Steel** is a specialized **air-hardening, medium-alloy cold work tool steel** distinguished by its unique combination of **high manganese content, exceptional dimensional stability, and good machinability**. Designated as **UNS T30106** and commonly known as **AISI A6**, this steel is part of the air-hardening family but possesses distinct characteristics due to its higher carbon and manganese levels compared to A2. It is engineered to provide **superior wear resistance, minimal distortion during heat treatment, and good toughness** for demanding tooling applications. A6 is particularly valued for its ability to maintain tight tolerances in complex tools and its performance in high-stress applications where a balance of wear life and resistance to chipping is required. ## **2. International Standards & Specifications** This material is a standardized grade recognized within the A-series air-hardening tool steel family. * **Primary Standard Designations:** * **UNS T30106:** Unified Numbering System designation. * **AISI A6:** American Iron and Steel Institute classification. * **ASTM A681:** Standard Specification for Tool Steels Alloy. * **Key International Equivalents:** * **DIN 1.2364:** The closest European equivalent (though compositions are not identical). * **ISO 4957:** Classified under air-hardening cold work tool steel types. * **Common Trade Names:** Often referred to as **A6 Tool Steel** or **Air-Hardening Manganese Steel**. It is less commonly referenced than A2 or D2. ## **3. Chemical Composition (Weight %, per ASTM A681)** The composition is characterized by high carbon and very high manganese, with moderate chromium and molybdenum. | Element | Composition Range (%) | Role & Benefit | |---------|----------------------|----------------| | **Carbon (C)** | 0.65 – 0.75 | Provides hardness and wear resistance. Lower than A2, but balanced with high Mn for hardenability. Results in good toughness for its hardness. | | **Manganese (Mn)** | 1.80 – 2.50 | **The defining characteristic.** Extremely high for a tool steel. Provides profound **air hardenability**, allowing full hardening of thick sections with minimal distortion. Also contributes to strength and wear resistance. | | **Chromium (Cr)** | 0.90 – 1.20 | Contributes to hardenability and wear resistance, though at lower levels than A2. | | **Molybdenum (Mo)** | 0.90 – 1.40 | **Critical for hardenability and toughness.** Works synergistically with manganese to ensure deep hardening and refine the microstructure. | | **Silicon (Si)** | 0.10 – 0.50 | Deoxidizer and solid solution strengthener. | | **Nickel (Ni)** | 0.30 – 0.70 (May be present) | Can be present in some specifications to further enhance toughness. | | **Note:** Vanadium (V) is **not** a specified alloying element in standard A6, differentiating it from A2 and D2. ## **4. Typical Physical & Mechanical Properties (Heat Treated)** * **Recommended Heat Treatment:** * **Preheating:** 650-700°C (1200-1290°F) to minimize thermal stress. * **Austenitizing:** **830-870°C (1525-1600°F).** Notably **lower** than A2 (940-980°C), reducing the risk of distortion and grain growth. * **Quenching:** **Air cool.** The high manganese content ensures excellent air hardenability even at this lower temperature. * **Tempering:** **Double tempering recommended.** Typical range: **175-540°C (350-1000°F).** Exhibits good secondary hardening; tempering around 205-425°C (400-800°F) is common. * **Mechanical Properties (Hardened & Double Tempered @ 205°C):** * **Hardness:** **57 – 62 HRC** (typical range, often used at 58-60 HRC). Achieves slightly lower maximum hardness than A2 due to lower carbon. * **Tensile Strength:** 1850 – 2050 MPa (268,000 – 297,000 psi) * **Compressive Strength:** High. * **Impact Toughness (Charpy):** **Very Good to Excellent.** Often considered to have **better toughness than A2 at equivalent hardness levels**, due to its lower carbon content and fine-grained structure from low-temperature hardening. * **Dimensional Stability:** **Exceptional.** The combination of air hardening and a relatively low austenitizing temperature results in **among the lowest distortion characteristics of all tool steels**, making it ideal for intricate tools. * **Key Performance Features:** * **Machinability (Annealed):** **Very Good to Excellent.** Softer and more free-machining than A2 in the annealed state due to its microstructure and lack of hard vanadium carbides. * **Wear Resistance:** **Good.** Adequate for many applications, though generally less than higher-carbon, higher-chromium steels like A2 or D2 due to lower carbide volume. * **Deep Hardenability:** Excellent, capable of through-hardening very thick sections in air. * **Physical Properties:** * **Density:** ~7.84 g/cm³ * **Thermal Conductivity:** ~ 30 W/m·K (at 20°C) * **Coefficient of Thermal Expansion:** ~11.8 × 10⁻⁶/°C (20–100°C) ## **5. Product Application** ATI A6 Tool Steel is chosen for applications where minimal distortion, good toughness, and ease of machining are prioritized, often in complex or delicate tools. * **Intricate Forming and Embossing Dies:** * **Complex forming dies, coining dies, and embossing tools** where dimensional accuracy after heat treatment is critical. * **Lamination dies and precision punches.** * **Gauges and Precision Tools:** * **Master gauges, thread gauges, and plug gauges** requiring supreme dimensional stability. * **Jigs and fixtures** for high-precision machining. * **Machine Components and Wear Parts:** * **Cams, rollers, and wear plates** that undergo sliding contact and require good toughness. * **Slitter knives and shear blades** for non-ferrous materials. * **Molds and Dies for Non-Ferrous Materials:** * **Zinc die-casting dies** and molds for low-temperature alloys. * **Tools Subject to Impact:** * **Chisels, punches, and hand tools** where shock resistance is important. ## **6. Key Features & Advantages** * **Minimal Distortion During Heat Treatment:** Its signature advantage. The low austenitizing temperature combined with air hardening yields exceptional dimensional stability, reducing or eliminating post-heat-treatment machining. * **Excellent Toughness:** Provides superior impact resistance compared to many tool steels of similar hardness, making it resistant to chipping and cracking. * **Good Machinability:** Easier to machine in the annealed state than many other air-hardening grades, reducing fabrication time and cost. * **Deep and Uniform Air Hardenability:** The high manganese content ensures full hardening in thick sections with simple air cooling. * **Lower Heat Treating Temperature:** Reduces energy costs, furnace wear, and the risk of overheating. * **Good Through-Hardening in Large Sections:** Suitable for large tools or dies. ## **7. Processing Guidelines** * **Machining:** Machine in the annealed condition. Its good machinability allows for high metal removal rates and fine finishes. * **Heat Treatment:** **Preheat thoroughly.** Control the austenitizing temperature precisely—do not overheat. **Air cool uniformly in still air.** **Double temper immediately** after reaching hand-warm temperature. * **Grinding:** Grinds easily compared to high-vanadium steels. Use standard aluminum oxide wheels. * **Stress Relieving:** A stress relief cycle after rough machining is beneficial for the most complex tools. * **Surface Treatment:** Can be **nitrided** to improve surface hardness and wear resistance. Also a good candidate for PVD coatings. **Summary:** ATI Allegheny Ludlum A6 Tool Steel is a specialized problem-solver within the air-hardening family. It sacrifices a degree of ultimate wear resistance (compared to A2/D2) to gain unparalleled dimensional stability, excellent toughness, and superior machinability. For toolmakers facing the challenge of heat-treating intricate, thin-walled, or complex-geometry tools where distortion is the primary concern, A6 provides a reliable and often superior alternative. It is the material of choice when holding extremely tight tolerances through the heat treatment process is more critical than achieving the absolute maximum wear life. Its unique composition offers a distinct and valuable set of properties for precision tooling applications. -:- For detailed product information, please contact sales. -: ATI Allegheny Ludlum A6 Tool Steel, UNS T30106 Specification Dimensions Size： Diameter 20-1000 mm Length <7054 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 Allegheny Ludlum A6 Tool Steel, UNS T30106 Properties -:- For detailed product information, please contact sales. -:

Applications of ATI Allegheny Ludlum A6 Tool Steel Flange, UNS T30106 -:- For detailed product information, please contact sales. -: Chemical Identifiers ATI Allegheny Ludlum A6 Tool Steel Flange, UNS T30106 -:- For detailed product information, please contact sales. -:

Packing of ATI Allegheny Ludlum A6 Tool Steel Flange, UNS T30106 -:- 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 3525 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