Latrobe,LSS™ MGR™ Tool Steel Flange (ASTM A8)

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™ MGR™ Tool Steel Flange (ASTM A8) Product Information -:- For detailed product information, please contact sales. -: Latrobe LSS™ MGR™ Tool Steel Flange (ASTM A8) Synonyms -:- For detailed product information, please contact sales. -:

Latrobe LSS™ MGR™ Tool Steel (ASTM A8) Product Information -:- For detailed product information, please contact sales. -: # **Latrobe LSS™ MGR™ Tool Steel (ASTM A8)** ## **Product Overview** Latrobe LSS™ MGR™ is a premium-grade, air-hardening tool steel conforming to the ASTM A8 specification, engineered specifically for applications demanding a critical balance of **high toughness and exceptional wear resistance**. The "MGR" designation underscores its optimized performance in environments involving both **impact loading and abrasive wear**, filling a vital niche between shock-resistant and high-carbon, high-chromium cold work steels. It is particularly valued in heavy-duty forming, shearing, and punching operations where tools must withstand severe mechanical stress without fracturing. ## **Key Features & Benefits** * **Superior Toughness:** Provides excellent resistance to chipping, cracking, and breakage under high-impact conditions, significantly outperforming standard high-wear grades like D2 or A2 in shock-load applications. * **High Wear Resistance:** Contains a substantial volume of hard carbides, offering wear resistance superior to many other high-toughness grades (e.g., S7), thereby extending tool life in abrasive applications. * **Good Dimensional Stability:** As an air-hardening steel, it exhibits minimal distortion during quenching, ensuring the geometric integrity of complex or precision tools. * **Deep Hardenability:** Can be through-hardened in substantial cross-sections via air quenching, guaranteeing uniform core properties in large tools. * **Balanced Performance:** The hallmark of MGR™ is its ability to reliably combine two often-opposing properties: impact toughness and abrasive wear resistance. ## **International Standard & Designations** * **Primary Standard:** **ASTM A681-08 (R2019):** Standard Specification for Tool Steel Alloy. * **Grade:** **A8** * **Manufacturer's Designation:** **Latrobe LSS™ MGR™** * **Unified Numbering System (UNS):** **T30108** * **Common International Equivalents (Functional):** * There is no direct, universally adopted equivalent. It occupies a unique position. * **Germany (DIN/W-Nr.):** The closest German grade in philosophy is **1.2606** (55NiCrMoV7), though chemistry differs. * It is often compared to and selected as a tougher alternative to **A2** and a more wear-resistant alternative to **S7**. ## **Chemical Composition (%, typical - ASTM A8)** The composition is a skillful balance of carbide-forming elements for wear and alloying elements for toughness and hardenability. | Carbon (C) | Chromium (Cr) | Molybdenum (Mo) | Tungsten (W) | Vanadium (V) | Nickel (Ni)* | Manganese (Mn) | Silicon (Si) | Iron (Fe) | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | 0.50 - 0.60 | 4.75 - 5.50 | 1.15 - 1.65 | 1.00 - 1.50 | 1.80 - 2.20 | 0.50 - 1.00 | 0.20 - 0.50 | 0.20 - 0.50 | Balance | **\*Note:** The presence of Nickel (Ni) is a key differentiator from many other cold work grades, significantly contributing to core toughness and hardenability. ## **Physical & Mechanical Properties (Typical)** | Property | Value / Description | | :--- | :--- | | **Density** | ~7.8 g/cm³ (0.282 lb/in³) | | **Hardness (Annealed)** | 200-230 HB (Brinell) | | **Hardness (Heat Treated)** | **56 - 60 HRC** (Typical optimal working range balancing toughness and wear) | | **Austenitizing Temperature** | 995 - 1025°C (1825 - 1880°F) | | **Quenching Medium** | Air (Still or Forced) | | **Tempering Temperature** | 205 - 595°C (400 - 1100°F). Often tempered between 425-540°C (800-1000°F) to achieve the optimal property balance. **Double tempering is recommended.** | | **Toughness (Impact Resistance)** | Very High for its hardness level. | | **Wear Resistance** | Good to Very Good, significantly better than S-series shock steels. | ## **Product Applications** Latrobe LSS™ MGR™ is the material of choice for demanding tooling that encounters both heavy impact and abrasive wear. * **Heavy-Duty Blanking and Punching Dies:** For punching thick plate, abrasive metals, and reinforced materials where standard dies would chip or crack. * **Forming Dies and Mandrels:** For cold forming of high-strength alloys, where high pressure and material abrasion are combined. * **Shear Blades and Slitter Knives:** For cutting abrasive or tough materials like cable, wire rope, heavy-gauge sheet, and composites. * **Hot Work Applications (Limited):** Can be used for certain hot shearing or trimming operations at lower temperatures due to its good hot hardness. * **Chisels and Tool Bits** for heavy machining or cutting of hard materials. * **Large, Complex Dies** requiring deep hardenability and minimal distortion. ## **Processing & Heat Treatment Notes** * **Machining:** Good machinability in the annealed condition. * **Heat Treatment:** Requires thorough preheating (e.g., at 650-700°C / 1200-1300°F) prior to austenitizing in a controlled atmosphere furnace. Quench in still or forced air. **Immediate tempering is required.** Double tempering ensures complete transformation of retained austenite and stress relief. The high tempering temperatures used (often 480°C/900°F+) are key to developing its unique toughness. * **Grinding:** Grinds well in the hardened state. Use proper wheels and coolant to avoid localized overheating. * **Surface Treatments:** Can be nitrided to further enhance surface wear and galling resistance for specific applications without significantly affecting the tough core. --- **Disclaimer** *This product description provides typical information for A8/MGR-type tool steel. Latrobe LSS™ MGR™ is a proprietary product, and its exact processing characteristics may be optimized. 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™ MGR™ Tool Steel (ASTM A8) Specification Dimensions Size： Diameter 20-1000 mm Length <5352 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™ MGR™ Tool Steel (ASTM A8) Properties -:- For detailed product information, please contact sales. -:

Applications of Latrobe LSS™ MGR™ Tool Steel Flange (ASTM A8) -:- For detailed product information, please contact sales. -: Chemical Identifiers Latrobe LSS™ MGR™ Tool Steel Flange (ASTM A8) -:- For detailed product information, please contact sales. -:

Packing of Latrobe LSS™ MGR™ Tool Steel Flange (ASTM A8) -:- 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 1823 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