AISI Type A6 Tool 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. -: AISI Type A6 Tool Steel Flange Product Information -:- For detailed product information, please contact sales. -: AISI Type A6 Tool Steel Flange Synonyms -:- For detailed product information, please contact sales. -:

AISI Type A6 Tool Steel Product Information -:- For detailed product information, please contact sales. -: # **Product Introduction: AISI Type A6 Tool Steel** ## **Overview** AISI Type A6 is a **medium-carbon, high-manganese, air-hardening cold work tool steel** renowned for its **exceptional dimensional stability and superior toughness**. Characterized by lower carbon content than most A-series grades and significant manganese alloying, A6 provides an optimal balance of properties for applications where **minimal distortion during heat treatment and resistance to shock loading** are critical requirements. Its composition prioritizes dimensional predictability and impact resistance over maximum wear resistance, making it a preferred choice for precision tooling, master gauges, and complex fixtures. --- ## **Chemical Composition (Typical Weight %)** The composition features moderate carbon with high manganese for stability and hardenability. | Element | Content (%) | | :--- | :--- | | Carbon (C) | 0.65 - 0.75 | | Manganese (Mn) | 1.80 - 2.50 | | Chromium (Cr) | 0.90 - 1.20 | | Molybdenum (Mo) | 0.90 - 1.40 | | Silicon (Si) | 0.15 - 0.50 | | Nickel (Ni) | 0.90 - 1.40 | | Vanadium (V) | ≤ 0.25 | | Sulfur (S) | ≤ 0.03 | | Phosphorus (P) | ≤ 0.03 | | **Iron (Fe)** | **Balance** | **Key Role of Elements:** * **Moderate Carbon (0.65-0.75%):** Lower than most tool steels, optimizing toughness while providing adequate hardness. Reduces distortion and cracking tendency during heat treatment. * **High Manganese (1.80-2.50%):** Primary alloying element providing deep hardenability, austenite stabilization, and significant contribution to toughness and strength. * **Nickel (0.90-1.40%):** Enhances toughness, hardenability, and ductility, particularly in heavier cross-sections. * **Chromium & Molybdenum:** Support hardenability, provide moderate wear resistance through carbide formation, and contribute to air-hardening capability. * **Low Vanadium:** Minimizes hard carbide formation to preserve toughness; primarily refines grain structure. --- ## **Physical & Mechanical Properties** *Properties shown are for properly heat treated material (typically austenitized at 830-870°C/1525-1600°F).* | Property | Typical Value / Description | | :--- | :--- | | **Density** | 7.86 g/cm³ (0.284 lb/in³) | | **Hardness (Annealed)** | 200 - 235 HB (Brinell) | | **Hardness (Hardened & Tempered)** | **54 - 60 HRC** (Commonly used at 56-58 HRC for optimal toughness) | | **Wear Resistance** | **Fair to Moderate.** Lower than higher-carbon tool steels (A2, D2) but adequate for many applications where wear is not the primary concern. | | **Toughness** | **Excellent.** One of the toughest air-hardening tool steels, superior to A2 and comparable to some shock-resistant grades at equivalent hardness. | | **Dimensional Stability** | **Exceptional.** Minimal dimensional change (<0.0002 in/in) and distortion during air hardening. Excellent for precision components. | | **Machinability (Annealed)** | **Very Good** (Approx. 75-80% of 1% carbon steel). Among the most machinable air-hardening tool steels due to lower carbon and favorable microstructure. | | **Grindability** | **Good.** Less demanding than high-alloy tool steels; standard aluminum oxide wheels with proper cooling are effective. | | **Thermal Conductivity** | ~ 33.5 W/m·K at 20°C (Higher than many tool steels) | | **Coefficient of Thermal Expansion** | ~ 11.6 × 10⁻⁶/°C (20-100°C) | | **Deep Hardenability** | **Excellent.** Can through-harden sections up to 150-175mm (6-7") with proper air quenching due to high manganese content. | --- ## **Heat Treatment Guidelines** | Process | Parameters | | :--- | :--- | | **Annealing** | Heat to 790-815°C (1450-1500°F), slow furnace cool at ≤22°C/hour (40°F/hour) to 480°C (900°F), then air cool. Result: 200-235 HB. | | **Stress Relieving** | 650-675°C (1200-1250°F) for 1-2 hours, air cool. | | **Preheating** | **Essential:** Preheat at 650-760°C (1200-1400°F) to minimize thermal stress. | | **Austenitizing** | **830-870°C (1525-1600°F).** Soak time: 20-40 minutes per inch of thickness. Higher temperatures increase hardness but reduce toughness. | | **Quenching** | **Air quench** in still or forced air. For sections >100mm, forced air or positive pressure quenching is recommended. | | **Tempering** | **Must begin within 1-2 hours after quenching.** Double temper at 175-540°C (350-1000°F) for minimum 2 hours per cycle. For maximum toughness: temper at 425-540°C (800-1000°F) to achieve 54-56 HRC. | --- ## **Product Applications** AISI A6 excels in **precision applications requiring dimensional stability and toughness**, particularly in large or complex tooling. ### **Primary Applications:** 1. **Precision Gauges & Measuring Tools:** Master gauges, plug gauges, ring gauges, and dimensional standards requiring exceptional stability. 2. **Jigs, Fixtures & Tooling Plates:** Complex fixtures that must maintain accuracy after heat treatment. 3. **Forming Dies & Punches:** For medium-duty forming where dimensional accuracy is more critical than extreme wear resistance. 4. **Shear Blades & Cutting Tools:** For materials where shock resistance is more important than maximum wear (e.g., fibrous materials, certain plastics). 5. **Machine Tool Components:** Wear plates, guide rails, cam plates, and other precision components in machinery. 6. **Thread Rolling Dies & Forming Rolls:** For softer materials where dimensional precision is paramount. 7. **Master Tooling & Patterns:** For reproducing tooling where minimal distortion is essential. ### **Industry Usage:** - **Precision Manufacturing & Metrology** - **Aerospace Tooling & Fixturing** - **Automotive Tool & Die Making** - **Heavy Equipment Manufacturing** - **General Tooling & Machining** --- ## **International Standards & Cross-Reference** AISI A6 has limited direct international equivalents due to its specific composition. | Standard | Designation | Equivalent / Similar Grade | | :--- | :--- | :--- | | **AISI/SAE (USA)** | **Type A6** | - | | **UNS (USA)** | **T30106** | - | | **ASTM (USA)** | A681 | Grade A6 | | **Europe (EN)** | - | No direct common equivalent | | **Germany (DIN)** | **~1.2365** (*closest functional match*) | 55NiCrMoV7 (Different Mn content) | | **Japan (JIS)** | - | No direct common equivalent | | **Sweden (SS)** | **~2710** | - | **Important Note:** The high manganese content (1.80-2.50%) distinguishes A6 from most international grades. DIN 1.2365 (55NiCrMoV7) is often used as a functional substitute but contains only ~0.60% Mn. True chemical equivalents are rare outside North American specifications. --- ## **Technical Comparison Summary** - **vs. A2:** A6 has **significantly higher toughness** and **better dimensional stability** but **lower wear resistance** and **maximum hardness**. - **vs. O1 (Oil-Hardening):** A6 offers **far superior dimensional stability** (air vs. oil quench), **better toughness**, and **deeper hardenability**. - **vs. S7 (Shock Steel):** S7 has **higher impact resistance** at high hardness, but A6 offers **better dimensional stability, machinability, and is less expensive** for many applications. --- ## **Advantages & Considerations** ### **Advantages:** 1. **Exceptional Dimensional Stability:** Minimal distortion during heat treatment, ideal for precision components. 2. **Superior Toughness:** Excellent resistance to chipping and fracture under impact. 3. **Deep & Uniform Hardenability:** Reliable through-hardening in very thick sections with simple air quenching. 4. **Excellent Machinability:** Reduces fabrication time and cost compared to most tool steels. 5. **Predictable Performance:** Consistent response to heat treatment with minimal risk of cracking. ### **Considerations:** 1. **Limited Wear Resistance:** Not suitable for highly abrasive applications or long production runs on abrasive materials. 2. **Lower Maximum Hardness:** Cannot achieve the high hardness levels (>60 HRC) of A2 or D2. 3. **Specialized Application Focus:** Over-engineered for simple tooling; best reserved for applications leveraging its unique stability. 4. **Limited Global Availability:** Primarily a North American grade with limited international equivalents. --- ## **Availability & Processing** ### **Available Forms:** - Round Bars (¼" to 12" diameter) - Flat Bars and Plates - Forged Blocks - Precision Ground Stock - Custom Shapes (on request) ### **Processing Recommendations:** 1. **Machining:** Use carbide tools for optimal results; moderate speeds and feeds with adequate coolant. 2. **Grinding:** Use standard aluminum oxide wheels (46-60 grit, H-I hardness) with proper coolant flow. 3. **EDM:** Can be successfully EDM machined; stress relieve after EDM processing. 4. **Welding:** Not generally recommended for tool applications. If necessary, preheat to 300-400°C (575-750°F) and use low-hydrogen electrodes with post-weld tempering. --- ## **Conclusion** AISI Type A6 tool steel represents a **specialized engineering solution focused on dimensional stability and toughness**. Its unique composition—featuring moderate carbon with high manganese and nickel—makes it the **premier choice for precision tooling applications where minimal distortion during heat treatment is non-negotiable**. While it sacrifices some wear resistance compared to other A-series grades, A6 provides unparalleled dimensional predictability, making it ideal for master gauges, complex fixtures, and tooling components that must maintain exact dimensions throughout their service life. For applications where **dimensional accuracy, impact resistance, and reliable performance in thick sections** are paramount, A6 offers a proven, dependable material solution that bridges the gap between general-purpose tool steels and specialized high-stability alloys. -:- For detailed product information, please contact sales. -: AISI Type A6 Tool Steel Specification Dimensions Size： Diameter 20-1000 mm Length <6665 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 A6 Tool Steel Properties -:- For detailed product information, please contact sales. -:

Applications of AISI Type A6 Tool Steel Flange -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI Type A6 Tool Steel Flange -:- For detailed product information, please contact sales. -:

Packing of AISI Type A6 Tool 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 3136 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