Latrobe,LSS™ L6 Tool Steel Flange (ASTM L6)

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. -: Latrobe LSS™ L6 Tool Steel Flange (ASTM L6) Product Information -:- For detailed product information, please contact sales. -: Latrobe LSS™ L6 Tool Steel Flange (ASTM L6) Synonyms -:- For detailed product information, please contact sales. -:

Latrobe LSS™ L6 Tool Steel (ASTM L6) Product Information -:- For detailed product information, please contact sales. -: # **Latrobe LSS™ L6 Tool Steel (ASTM L6)** ## **Product Overview** Latrobe LSS™ L6 is a premium-grade, oil-hardening tool steel classified under the ASTM L6 specification, renowned for its exceptional combination of **high toughness, good wear resistance, and excellent machinability**. Characterized by its significant nickel content, L6 is engineered to withstand severe impact and shock loading while maintaining sufficient surface hardness for wear applications. It is particularly valued in tooling where resistance to breakage and chipping is paramount, serving as a versatile and reliable material for demanding industrial applications. ## **Key Features & Benefits** * **Exceptional Toughness & Impact Resistance:** The high nickel content provides outstanding resistance to shock loading, cracking, and brittle fracture, making it one of the toughest tool steels available. * **Good Wear Resistance:** Achieves a favorable balance of surface hardness and core toughness, offering better wear resistance than dedicated shock steels (S-series) while maintaining superior impact strength compared to high-wear steels (D-series). * **Excellent Machinability:** Exhibits superior machinability in the annealed condition compared to many other tool steels, facilitating easier fabrication of complex tool geometries. * **Deep Hardenability:** Capable of through-hardening in moderate to heavy sections via oil quenching, ensuring a consistent gradient of properties. * **Versatile Performance Profile:** Occupies a unique niche, effectively bridging the gap between high-toughness/low-wear and low-toughness/high-wear steel categories. ## **International Standard & Designations** * **Primary Standard:** **ASTM A681-08 (R2019):** Standard Specification for Tool Steel Alloy. * **Grade:** **L6** * **Manufacturer's Designation:** **Latrobe LSS™ L6** * **Unified Numbering System (UNS):** **T61206** * **Common International Equivalents:** * **ISO:** **55NiCrMoV7** (Close equivalent) * **Germany (DIN/W-Nr.):** **1.2713 / 55NiCrMoV6** * **Japan (JIS):** **SKT4** * **Sweden (SS):** **2541** ## **Chemical Composition (%, typical - ASTM L6)** | Carbon (C) | Nickel (Ni) | Chromium (Cr) | Molybdenum (Mo) | Vanadium (V) | Manganese (Mn) | Silicon (Si) | Iron (Fe) | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | 0.65 - 0.75 | 1.25 - 2.00 | 0.60 - 1.20 | 0.20 - 0.60 | 0.10 - 0.30 | 0.25 - 0.80 | 0.10 - 0.50 | Balance | ## **Physical & Mechanical Properties (Typical)** | Property | Value / Description | | :--- | :--- | | **Density** | 7.85 g/cm³ (0.284 lb/in³) | | **Hardness (Annealed)** | 200-225 HB (Brinell) | | **Hardness (Heat Treated)** | **56 - 60 HRC** (Typical working range balancing toughness and wear)
Can achieve up to ~62 HRC with adjusted tempering for higher wear resistance. | | **Austenitizing Temperature** | 815 - 870°C (1500 - 1600°F) | | **Quenching Medium** | Oil | | **Tempering Temperature** | **205 - 595°C (400 - 1100°F).** Commonly tempered at 425-540°C (800-1000°F) to optimize the toughness-hardness balance. **Double tempering is recommended.** | | **Toughness (Impact Resistance)** | **Exceptionally High.** Among the highest of all commercial tool steels. | | **Wear Resistance** | **Good.** Adequate for many forming and cutting applications, though lower than dedicated high-carbon, high-chromium grades like D2. | ## **Product Applications** Latrobe LSS™ L6 is ideally suited for tooling that must withstand severe mechanical shock and heavy loading. * **Heavy-Duty Forming Tools:** Back-up rolls, forming dies, and mandrels subject to high pressure. * **Impact Tools:** Chisels, pneumatic tool bits, and hammer heads. * **Shear Blades and Knives:** For cutting tough materials like cable, wire rope, and high-strength alloys. * **Gears, Arbors, and Spindles** in heavy machinery. * **Cold Work Punches and Dies** where breakage is a primary concern. * **Woodworking Tools** like band saw blades and large cutting knives. * **Plastic Injection Molds** requiring high polishability and toughness. ## **Processing & Heat Treatment Notes** * **Machining:** **Excellent** machinability in the annealed condition, among the best of all tool steels. * **Heat Treatment:** Requires standard preheating practices. Austenitize in a controlled atmosphere furnace to prevent decarburization. Quench in a fast, circulating oil bath. **Temper immediately after quenching.** The recommended high tempering range (425-540°C/800-1000°F) is key to developing its optimal toughness. Double tempering ensures stress relief and stability. * **Grinding:** Grinds well in the hardened state. Use standard practices for tool steels. * **Surface Treatments:** Can be carburized or nitrided to enhance surface hardness and wear resistance while retaining its extremely tough core. --- **Disclaimer** *This product description provides typical information for L6 tool steel. Latrobe LSS™ L6 is produced to high-quality standards. Properties are influenced by heat treatment parameters and section size. For critical applications, always consult the latest official technical data sheets and processing guidelines from Latrobe Specialty Steel to determine suitability and optimal processing parameters.* -:- For detailed product information, please contact sales. -: Latrobe LSS™ L6 Tool Steel (ASTM L6) Specification Dimensions Size： Diameter 20-1000 mm Length <5361 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. -: Latrobe LSS™ L6 Tool Steel (ASTM L6) Properties -:- For detailed product information, please contact sales. -:

Applications of Latrobe LSS™ L6 Tool Steel Flange (ASTM L6) -:- For detailed product information, please contact sales. -: Chemical Identifiers Latrobe LSS™ L6 Tool Steel Flange (ASTM L6) -:- For detailed product information, please contact sales. -:

Packing of Latrobe LSS™ L6 Tool Steel Flange (ASTM L6) -:- 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 1832 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