Latrobe,LSS™ H10 Hot Work Tool Steel Flange (ASTM H10)

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™ H10 Hot Work Tool Steel Flange (ASTM H10) Product Information -:- For detailed product information, please contact sales. -: Latrobe LSS™ H10 Hot Work Tool Steel Flange (ASTM H10) Synonyms -:- For detailed product information, please contact sales. -:

Latrobe LSS™ H10 Hot Work Tool Steel (ASTM H10) Product Information -:- For detailed product information, please contact sales. -: # **Latrobe LSS™ H10 Hot Work Tool Steel** ## **Premium Molybdenum-Base Hot Work Steel for High-Temperature Service** Latrobe LSS™ H10 is a premium molybdenum-base hot work tool steel designed for exceptional performance in high-temperature applications. As an ASTM H10 grade, it offers an optimal balance of high-temperature strength, thermal fatigue resistance, and toughness, making it particularly suitable for aluminum die casting, extrusion, and forging applications. This alloy represents a specialized solution for tooling that must withstand repeated thermal cycling while maintaining dimensional stability and resisting heat checking. --- ### **Key Features & Benefits** - **Excellent Thermal Fatigue Resistance**: Withstands repeated heating and cooling cycles without cracking or heat checking - **Good High-Temperature Strength**: Maintains mechanical properties at elevated operating temperatures (up to 540°C/1000°F) - **Superior Toughness**: Good impact resistance at both room and elevated temperatures - **Good Wear Resistance**: Adequate abrasion resistance for many hot work applications - **Moderate Alloy Content**: Cost-effective solution compared to higher-alloy hot work steels - **Good Machinability**: Relatively easy to machine in the annealed condition --- ### **Chemical Composition (Typical %, ASTM A681 H10)** | Element | Carbon (C) | Molybdenum (Mo) | Chromium (Cr) | Vanadium (V) | Silicon (Si) | Manganese (Mn) | |---------|------------|-----------------|---------------|--------------|--------------|----------------| | **Content** | 0.35 - 0.45 | 2.75 - 3.25 | 3.00 - 3.75 | 0.25 - 0.50 | 0.80 - 1.20 | 0.25 - 0.70 | *Note: LSS™ H10 features a balanced composition with moderate alloying elements that provide good hot strength without excessive cost. The molybdenum content is critical for high-temperature performance, while controlled vanadium enhances wear resistance.* --- ### **Physical & Mechanical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | 7.84 g/cm³ | | **Thermal Conductivity** | 28-32 W/m·K at 20°C | | **Specific Heat Capacity** | 0.46 kJ/kg·K at 20°C | | **Coefficient of Thermal Expansion** | 11.5 × 10⁻⁶/K (20-400°C) | | **Hardness (Annealed)** | 192-229 HB | | **Hardness (Heat Treated)** | **42-48 HRC** (typical working range) | | **Tensile Strength** | 1,550-1,850 MPa (at 45 HRC) | | **Yield Strength** | 1,400-1,650 MPa (at 45 HRC) | | **Modulus of Elasticity** | 205-215 GPa | | **Impact Toughness** | Very Good – optimized for thermal shock resistance | --- ### **Heat Treatment Guidelines** #### **Annealing** - **Temperature**: 845-870°C (1555-1600°F) - **Method**: Slow furnace cool at ≤22°C (40°F) per hour to 600°C (1110°F), then air cool - **Resultant Hardness**: 192-229 HB #### **Stress Relieving** - **Temperature**: 650-675°C (1200-1245°F) - **Hold Time**: 1-2 hours per inch of thickness - **Cooling**: Air cool to room temperature #### **Hardening** 1. **Preheating**: 650-750°C (1200-1380°F) – thorough equalization 2. **Austenitizing**: **1000-1040°C (1830-1905°F)** – precise control recommended 3. **Soak Time**: 20-30 minutes per inch of thickness 4. **Quenching**: Air cooling sufficient for most applications; oil for maximum hardness 5. **Immediate Handling**: Cool to 50-65°C (120-150°F) before tempering #### **Tempering** - **Temperature Range**: 540-650°C (1005-1200°F) – depending on required hardness - **Cycles**: Double tempering recommended for dimensional stability - **Duration**: 2 hours per cycle minimum, air cool between cycles - **Target Hardness**: 42-48 HRC typically achieved at 540-600°C (1005-1110°F) --- ### **International Standards & Equivalent Grades** | Standard | Grade Designation | Notes | |----------|-------------------|-------| | **ASTM** | A681 H10 | Primary specification (UNS T20810) | | **ISO** | 30CrMoV12-9 | ISO 4957 designation | | **DIN** | 1.2365 / 32CrMoV12-28 | German standard | | **JIS** | SKD7 | Japanese industrial standard | | **AFNOR** | 32CDV12-09 | French association standard | | **GB** | 4Cr5MoSiV1 | Chinese equivalent (approximate) | | **UNS** | T20810 | Unified Numbering System | --- ### **Typical Applications** #### **Die Casting Tooling** - **Aluminum Die Casting Dies**: Core pins, cavities, inserts, and ejector pins - **Hot Chambers**: Components for zinc and magnesium die casting - **Shot Sleeves**: For aluminum and magnesium casting - **Plunger Tips**: For aluminum die casting machines #### **Extrusion Tooling** - **Aluminum Extrusion Dies**: Profile dies, feeder plates, and backers - **Extrusion Mandrels**: For tube and hollow profile extrusion - **Containers and Liners**: For aluminum extrusion presses #### **Forging Applications** - **Hammer and Press Dies**: For steel and non-ferrous forging - **Die Inserts**: For forging dies requiring thermal fatigue resistance - **Punches and Mandrels**: For hot forging operations #### **Plastic Molding** - **Hot Runner Systems**: Nozzles, manifolds, and tips - **Molds for High-Temperature Plastics**: Such as PEEK, PPS, and LCP #### **General Hot Work Applications** - **Hot Shear Blades**: For cutting hot materials - **Hot Forming Tools**: For various metal forming operations - **Glass Molding Tools**: For glass forming applications --- ### **Machining & Fabrication Notes** #### **Machinability (Annealed Condition)** - **Rating**: 60-70% of B1112 free-machining steel - **Recommended Tools**: HSS or carbide tools both suitable - **Cutting Speeds**: 20-30 m/min (65-100 SFM) for turning operations - **Feed Rates**: Moderate feeds with standard tool geometries - **Coolant**: Standard soluble oils adequate #### **Grindability** - **Relative Rating**: 70-80 (vs. 100 for annealed O1 tool steel) - **Abrasive Recommendations**: Standard aluminum oxide wheels - **Wheel Maintenance**: Normal dressing intervals sufficient - **Coolant**: Standard grinding coolant adequate #### **EDM Machining** - Well-suited for wire and sinker EDM operations - Standard EDM parameters apply - Stress relief after roughing operations recommended --- ### **Quality Assurance & Metallurgical Standards** #### **Microstructural Requirements** - **Carbide Distribution**: Fine, uniformly distributed carbides - **Grain Size**: ASTM 6 or finer - **Decarburization**: ≤0.25 mm per side on rough stock - **Non-Metallic Inclusions**: ASTM E45 Method A, ≤2.5 total rating #### **Testing & Certification** - Full chemical analysis verification - Hardness testing throughout production - Microstructural evaluation available upon request - Standard material test reports with shipments --- ### **Available Product Forms** | Form | Standard Sizes | Condition | Surface Finish | |------|---------------|-----------|---------------| | **Round Bars** | 10mm - 500mm diameter | Annealed | Black, Peeled, Ground | | **Flat Bars** | 10-300mm thickness | Annealed | Mill, Ground | | **Blocks** | Various dimensions | Annealed | Rough machined | | **Forged Blanks** | Custom dimensions | Annealed | As-forged, Machined | | **Plate** | 10-200mm thickness | Annealed | Ground, Mill finish | --- ### **Technical Comparison** | Property | LSS™ H10 | H13 | H11 | H21 | |----------|-----------|-----|-----|-----| | **Thermal Fatigue Resistance** | Very Good | Excellent | Good | Fair | | **High-Temperature Strength** | Good | Very Good | Good | Excellent | | **Toughness** | Very Good | Good | Very Good | Fair | | **Wear Resistance** | Good | Very Good | Good | Excellent | | **Cost Effectiveness** | **Excellent** | Good | Good | Fair | | **Primary Application** | Al die casting | Versatile hot work | Forging | High-temp forming | --- ### **Special Considerations for Hot Work Applications** 1. **Surface Treatments**: Nitriding and other surface treatments can enhance performance 2. **Preheating**: Tools should be preheated before use in hot work applications 3. **Temperature Management**: Avoid rapid temperature changes during service 4. **Maintenance**: Regular inspection and maintenance prolong tool life --- ### **Economic Considerations** 1. **Material Cost**: Moderate – cost-effective for many hot work applications 2. **Tool Life**: Good service life in appropriate applications 3. **Maintenance Cost**: Moderate maintenance requirements 4. **Overall Value**: Excellent performance-to-cost ratio for aluminum die casting and similar applications --- ### **Storage & Handling** 1. **Storage Conditions**: Standard warehouse conditions acceptable 2. **Corrosion Protection**: Standard rust preventive adequate 3. **Handling**: Normal material handling procedures apply 4. **Identification**: Clearly marked with grade and heat number 5. **Shelf Life**: Standard industrial storage life with basic protection --- ### **Technical Support** Latrobe provides technical support for LSS™ H10 applications: - **Application Engineering**: Guidance on tool design and heat treatment - **Troubleshooting**: Assistance with tool performance issues - **Heat Treatment Support**: Protocols for optimal performance - **Field Support**: On-site technical assistance available --- **Select Latrobe LSS™ H10 Hot Work Tool Steel** for applications requiring good high-temperature performance with excellent toughness and thermal fatigue resistance. This molybdenum-base hot work steel provides a cost-effective solution for aluminum die casting, extrusion dies, and forging applications where thermal cycling is a primary concern. LSS™ H10 represents an optimal balance of performance, manufacturability, and cost for many hot work tooling applications, offering reliable service life and good resistance to heat checking and thermal fatigue. For tooling exposed to moderate high-temperature service with significant thermal cycling, LSS™ H10 delivers proven performance and excellent value. -:- For detailed product information, please contact sales. -: Latrobe LSS™ H10 Hot Work Tool Steel (ASTM H10) Specification Dimensions Size： Diameter 20-1000 mm Length <7164 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™ H10 Hot Work Tool Steel (ASTM H10) Properties -:- For detailed product information, please contact sales. -:

Applications of Latrobe LSS™ H10 Hot Work Tool Steel Flange (ASTM H10) -:- For detailed product information, please contact sales. -: Chemical Identifiers Latrobe LSS™ H10 Hot Work Tool Steel Flange (ASTM H10) -:- For detailed product information, please contact sales. -:

Packing of Latrobe LSS™ H10 Hot Work Tool Steel Flange (ASTM H10) -:- 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 3635 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