Bohler-Uddeholm,ISOBLOC® H13 Hot Work 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. -: Bohler-Uddeholm ISOBLOC® H13 Hot Work Tool Steel Flange Product Information -:- For detailed product information, please contact sales. -: Bohler-Uddeholm ISOBLOC® H13 Hot Work Tool Steel Flange Synonyms -:- For detailed product information, please contact sales. -:

Bohler-Uddeholm ISOBLOC® H13 Hot Work Tool Steel Product Information -:- For detailed product information, please contact sales. -: # **Product Datasheet: Böhler-Uddeholm ISOBLOC® H13 Hot Work Tool Steel** ## **Product Overview** **Böhler-Uddeholm ISOBLOC® H13** is a **high-purity, electro-slag remelted (ESR) premium H13 hot work tool steel** specifically engineered for **demanding die casting and hot work applications requiring exceptional directional properties and microcleanliness**. Unlike conventional H13, ISOBLOC® H13 undergoes the specialized **electro-slag remelting (ESR) process**, which significantly reduces non-metallic inclusions and segregation, resulting in **superior isotropy, enhanced fatigue resistance, and excellent polishability** in all directions. This material is the preferred choice for **critical aluminum die casting dies, extrusion tools, and precision hot work components** where reliability and consistent performance are paramount. ## **Key Characteristics & Advantages** - **Exceptional Microcleanliness:** ESR process drastically reduces oxide and sulfide inclusions - **Superior Isotropy:** Nearly identical mechanical properties in longitudinal and transverse directions - **Enhanced Fatigue Resistance:** Significantly improved thermal and mechanical fatigue life - **Excellent Polishability:** Capable of achieving mirror-like surface finishes - **Reduced Risk of Internal Defects:** Minimized segregation, porosity, and banding - **Good Machinability:** Better than conventional ESR steels due to optimized processing - **Excellent Toughness:** Maintains high impact resistance at elevated temperatures - **Predictable Performance:** Consistent heat treatment response and dimensional stability ## **Standard Specifications & International Designations** | **Standard** | **Designation** | **Notes** | |--------------|-----------------|-----------| | **Böhler-Uddeholm** | **ISOBLOC® H13** | Premium ESR quality grade | | **AISI/ASTM** | **H13 ESR** | Electro-slag remelted version | | **DIN/EN** | **1.2344 ESR** | Enhanced ESR quality | | **JIS** | **SKD61 ESR** | Premium ESR classification | | **ISO** | **HTF 4 ESR** | Hot work tool steel, ESR quality | | **Manufacturing Process** | **Electro-Slag Remelting (ESR)** | Key differentiator | | **Quality Classification** | **Premium ESR** | Superior to vacuum arc remelted (VAR) for many applications | ## **Chemical Composition (Typical, Weight %)** | Element | Content (%) | Primary Function | ESR Process Benefit | |---------|-------------|------------------|---------------------| | **Carbon (C)** | 0.38-0.42 | Matrix strength & carbide formation | More consistent carbide distribution | | **Chromium (Cr)** | 5.00-5.50 | Heat resistance & hardenability | Improved oxidation resistance uniformity | | **Molybdenum (Mo)** | 1.30-1.50 | Hot strength & secondary hardening | Enhanced high-temperature stability | | **Vanadium (V)** | 0.90-1.10 | Carbide formation & grain refinement | Finer, more uniform carbide structure | | **Silicon (Si)** | 0.90-1.10 | Deoxidizer & temper resistance | More effective deoxidation | | **Manganese (Mn)** | 0.30-0.50 | Hardenability | More consistent hardening response | | **Sulfur (S)** | **≤0.002** | **Ultra-low controlled level** | **Dramatically improved ductility & polishability** | | **Phosphorus (P)** | **≤0.012** | **Ultra-low controlled level** | **Significantly enhanced toughness** | | **Iron (Fe)** | **Balance** | Matrix | **Highly refined, homogeneous structure** | ***ESR Process Significance:** The Electro-Slag Remelting process involves remelting a consumable electrode through a molten slag layer. This refining action:* 1. *Dramatically reduces non-metallic inclusions (oxides, sulfides)* 2. *Improves chemical homogeneity and reduces segregation* 3. *Results in a denser, more uniform microstructure* 4. *Enhances directional properties (isotropy)* ## **Microstructural Characteristics** | Feature | Specification | Benefit of ESR Process | |---------|---------------|------------------------| | **Inclusion Content** | **ASTM E45 ≤ 0.5** | **Exceptional cleanliness** | | **Inclusion Types** | **Fine, globular (Type I)** | Reduced stress concentrators | | **Carbide Distribution** | **Highly uniform, no banding** | Consistent properties in all directions | | **Segregation** | **Minimal to none** | Improved isotropy | | **Grain Structure** | **Uniform, equiaxed** | Better mechanical properties | | **Porosity** | **Virtually eliminated** | Enhanced fatigue resistance | ## **ESR Process Advantages** 1. **Sequential Solidification:** Controlled solidification from bottom to top 2. **Slag Refining:** Molten slag absorbs impurities and inclusions 3. **Improved Density:** Reduced microporosity and shrinkage 4. **Enhanced Homogeneity:** More uniform chemical composition 5. **Superior Surface Quality:** Better ingot surface condition ## **Typical Heat Treatment** ### **1. Annealing** - **Temperature:** **850-880°C (1562-1616°F)** - **Cooling:** Controlled slow cool (20-25°C/hour) to 600°C, then air cool - **Annealed Hardness:** **185-210 HB** - **ESR Advantage:** More consistent annealing response throughout cross-section ### **2. Stress Relieving** - **Temperature:** **600-650°C (1112-1202°F)** - **Duration:** 2 hours per 25 mm thickness - **Application:** After rough machining, before final hardening ### **3. Hardening** 1. **Preheating:** **650°C (1202°F)** and **850°C (1562°F)** 2. **Austenitizing:** **1000-1030°C (1832-1886°F)** - **Standard:** **1020-1030°C (1868-1886°F)** - **High Toughness:** **1000-1010°C (1832-1850°F)** - **Maximum Hot Strength:** **1025-1030°C (1877-1886°F)** 3. **Soaking Time:** 20-40 minutes (depending on section size) 4. **Quenching:** **Air** or **high-pressure gas** (oil for complex shapes) - **ESR Advantage:** More uniform response to quenching ### **4. Tempering** - **Immediate Requirement:** Temper immediately after cooling to 50-70°C - **Minimum Cycles:** **Double tempering** recommended - **Temperature Range:** **540-650°C (1004-1202°F)** - **Hardness Profile:** - 540°C (1004°F): 50-52 HRC - 560°C (1040°F): 48-50 HRC - 580°C (1076°F): 46-48 HRC - 600°C (1112°F): 44-46 HRC - 620°C (1148°F): 40-42 HRC ### **5. Nitriding (Optional but Recommended)** - **Process:** Gas or plasma nitriding - **Temperature:** 480-530°C (896-986°F) - **Case Depth:** 0.1-0.3 mm typical - **Surface Hardness:** 1000-1200 HV - **ESR Advantage:** More consistent nitride layer formation ## **Physical Properties** | Property | Value | Unit | Conditions | ESR Advantage | |----------|-------|------|------------|---------------| | **Density** | 7.80 | g/cm³ | At 20°C | More consistent | | **Modulus of Elasticity** | 210 | GPa | At 20°C | More isotropic | | **Thermal Expansion Coefficient** | 11.5 | ×10⁻⁶/K | 20-100°C | More predictable | | **Thermal Conductivity** | 25.0 | W/(m·K) | At 20°C | More uniform | | **Specific Heat Capacity** | 460 | J/(kg·K) | At 20°C | Consistent | ## **Mechanical Properties** ### **Standard Condition (1025°C Austenitize / 580°C×2 Temper)** | Property | Value Range | Unit | Test Direction | ESR Advantage | |----------|-------------|------|---------------|---------------| | **Hardness** | 46-48 | HRC | All directions | **More uniform** | | **Tensile Strength** | 1500-1600 | MPa | Longitudinal | 5-10% improvement | | **Yield Strength (0.2%)** | 1350-1450 | MPa | Longitudinal | More consistent | | **Elongation** | 12-14 | % | Longitudinal | **Improved** | | **Impact Toughness (Charpy V)** | 45-55 | J | Transverse | **Significantly better** | | **Fatigue Strength** | 650-750 | MPa | All directions | **20-30% improvement** | ### **Directional Property Comparison (ESR vs Conventional)** | Property | Longitudinal (L) | Transverse (T) | L/T Ratio | Conventional L/T Ratio | |----------|-----------------|----------------|-----------|------------------------| | **Tensile Strength** | 100% | 98-99% | ~1.01 | ~1.05-1.10 | | **Yield Strength** | 100% | 97-99% | ~1.02 | ~1.08-1.15 | | **Impact Toughness** | 100% | 90-95% | ~1.05 | ~1.20-1.40 | | **Fatigue Limit** | 100% | 95-98% | ~1.02 | ~1.10-1.25 | ## **Primary Applications** ### **A. Critical Die Casting Applications** - **Large Die Casting Dies:** Where directional properties are critical - **Thin-Wall Casting Dies:** Requiring high polish and fatigue resistance - **Structural Components:** Engine blocks, transmission cases - **Safety-Critical Parts:** Automotive steering, braking components - **High-Pressure Die Casting:** Where reliability is paramount ### **B. Precision Plastic Molding** - **Optical Lenses:** Requiring exceptional surface finishes - **Medical Device Molds:** Where cleanliness and reliability are critical - **High-Gloss Surface Molds:** Automotive interiors, consumer electronics - **Hot Runner Systems:** Manifolds and nozzles ### **C. High-Performance Forging** - **Precision Forging Dies:** For aerospace components - **Die Inserts:** For critical forging applications - **Punches and Mandrels:** Where fatigue resistance is crucial ### **D. Special Applications Requiring Isotropy** - **Thread Rolling Dies** - **Extrusion Dies** for critical profiles - **Tools for Isothermal Forging** - **Glass Molding Tools** ## **Processing Guidelines** ### **1. Machining** - **Annealed Condition:** 190-210 HB (optimal for machining) - **Machinability:** **Very good** (75-85% relative to 1% C-steel) - **ESR Advantage:** More consistent cutting forces, better surface finish - **Tool Materials:** HSS or carbide recommended - **Cutting Parameters:** Similar to standard H13 but with improved consistency ### **2. Grinding and Polishing** - **Grindability:** **Excellent** - responds well to grinding - **Polishing:** **Superior to conventional H13** - Can achieve **Ra < 0.05 μm** with proper technique - More consistent results across large surfaces - Reduced risk of "orange peel" or other surface defects - **Wheel Selection:** Standard aluminum oxide or silicon carbide wheels - **ESR Advantage:** Reduced risk of pulling out inclusions during polishing ### **3. Electrical Discharge Machining (EDM)** - **Suitability:** **Excellent** - **Surface Finish:** Better as-edited surface compared to conventional grades - **White Layer:** Typically thinner and more consistent - **Post-EDM Treatment:** Standard stress relieving recommended ### **4. Welding** - **Weldability:** **Good** - similar to standard H13 - **ESR Advantage:** Reduced risk of weld defects due to cleaner base material - **Preheating:** 300-400°C (572-752°F) recommended - **Post-Weld:** Slow cool and re-temper ### **5. Surface Treatments** - **Nitriding:** **Excellent response** - more consistent case depth - **PVD Coatings:** Superior adhesion due to cleaner surface - **Texturing:** More consistent results across large areas ## **Quality Assurance** ### **ESR Process Advantages** 1. **Improved Cleanliness:** Significantly reduced oxide and sulfide inclusions 2. **Reduced Segregation:** More uniform chemical composition 3. **Better Density:** Reduced microporosity 4. **Enhanced Homogeneity:** More consistent properties throughout ### **Material Certification** - **Full Chemical Analysis:** Including trace elements - **Microcleanliness Report:** Per ASTM E45 with digital image analysis - **Ultrasonic Testing:** 100% inspection standard - **Directional Property Data:** Available upon request - **ESR Process Certification:** Documentation of remelting parameters ### **Available Forms** | Form | Typical Sizes | ESR-Specific Advantages | |------|---------------|-------------------------| | **Large Blocks** | Up to 1000×1000×500 mm | Consistent properties throughout | | **Round Bars** | Ø100-500 mm | Excellent transverse properties | | **Forged Shapes** | Custom configurations | Uniform properties in complex shapes | | **Pre-machined Blanks** | Customer specifications | Reduced risk of internal defects | ## **Comparative Performance** ### **vs. Conventional H13** | Property | ISOBLOC® H13 (ESR) | Conventional H13 | Improvement | |----------|-------------------|------------------|-------------| | **Transverse Toughness** | 100% | 70-80% | **25-40% better** | | **Fatigue Life** | 100% | 70-80% | **25-40% better** | | **Polishability** | Excellent | Good-Very Good | **Significantly better** | | **Surface Finish** | Superior | Good | **Much better** | | **Internal Soundness** | Excellent | Good | **Substantially better** | | **Cost** | 120-150% | 100% | Premium | ### **vs. Other ESR Hot Work Steels** | Grade | Best For | Relative Cost | Key Distinction | |-------|----------|---------------|-----------------| | **ISOBLOC® H13** | General premium applications | 100% | Balanced properties | | **Special ESR Grades** | Specific applications | 120-200% | Custom optimized | | **VAR H13** | Ultra-high vacuum applications | 110-130% | Different refining process | ## **Application Guidelines** ### **When to Select ISOBLOC® H13:** 1. **Critical die casting applications** requiring maximum reliability 2. **Large dies** where directional properties are important 3. **Applications requiring exceptional surface finish** 4. **Components subject to high cyclic loading** 5. **Safety-critical applications** where failure is not an option 6. **When extended tool life** justifies premium material cost ### **Economic Justification:** - **Material Cost:** 20-50% premium over conventional H13 - **Tool Life:** 30-100% improvement in demanding applications - **Reduced Scrap:** Better consistency reduces part rejection - **Maintenance Costs:** Less frequent polishing and repair - **Total Cost of Ownership:** Often favorable despite higher initial cost ### **Design Considerations:** 1. **Utilize isotropic properties** in design 2. **Can design more aggressive cooling channels** with reduced risk 3. **Thinner sections possible** due to better properties 4. **Reduced need for safety factors** in critical areas ## **Technical Support** ### **Available Services:** - **Material Selection Guidance:** When ESR is justified - **Heat Treatment Optimization:** For ESR-specific characteristics - **Application Engineering:** Design for isotropic properties - **Failure Analysis:** Specialized for ESR materials ### **Documentation:** - **ESR Process Certification** - **Directional Property Data** - **Application Case Studies** - **Processing Guidelines** specific to ESR material --- ## **Special Notes on ESR Process** ### **The ESR Advantage:** 1. **Process:** Electrode melted under protective slag layer 2. **Result:** Sequential solidification with refining action 3. **Benefits:** - Extremely low inclusion content - Excellent chemical homogeneity - Superior solidification structure - Reduced segregation ### **Limitations:** 1. **Cost:** Significant premium over conventional melting 2. **Availability:** Longer lead times possible 3. **Size Limitations:** Maximum dimensions constrained by ESR furnace size 4. **Application Specific:** Not justified for all applications ### **Industry Acceptance:** - **Widely accepted** for critical die casting applications - **Common in automotive** for safety-critical components - **Used in aerospace** for high-reliability tooling - **Growing adoption** in precision plastic molding --- **Disclaimer:** ISOBLOC® H13 is a premium ESR material that requires proper application evaluation to justify its cost premium. Consult with Böhler-Uddeholm technical specialists to determine if the ESR advantages are justified for your specific application. Performance data based on typical ESR processing; actual results may vary. Always follow current technical documentation and safety guidelines. -:- For detailed product information, please contact sales. -: Bohler-Uddeholm ISOBLOC® H13 Hot Work Tool Steel Specification Dimensions Size： Diameter 20-1000 mm Length <6869 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. -: Bohler-Uddeholm ISOBLOC® H13 Hot Work Tool Steel Properties -:- For detailed product information, please contact sales. -:

Applications of Bohler-Uddeholm ISOBLOC® H13 Hot Work Tool Steel Flange -:- For detailed product information, please contact sales. -: Chemical Identifiers Bohler-Uddeholm ISOBLOC® H13 Hot Work Tool Steel Flange -:- For detailed product information, please contact sales. -:

Packing of Bohler-Uddeholm ISOBLOC® H13 Hot Work 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 3340 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