EDRO #5 H13-Hot Work Tool Steel Rod/Bar

EDRO #5 H13-Hot Work Tool Steel Rod Product Information -:- For detailed product information, please contact sales. -: EDRO #5 H13-Hot Work Tool Steel Rod Synonyms -:- For detailed product information, please contact sales. -:

EDRO #5 H13-Hot Work Tool Steel Product Information -:- For detailed product information, please contact sales. -: # **EDRO #5 (H13 Hot Work Tool Steel) - Premium Aluminum Die Casting Grade** ## **Product Overview** EDRO #5 is a premium hot work tool steel conforming to the AISI H13 standard, specifically engineered for **aluminum die casting applications**. This chromium-molybdenum-vanadium hot work steel offers an exceptional balance of **thermal fatigue resistance, high temperature strength, and toughness**, making it the industry benchmark for aluminum die casting dies, inserts, and related tooling. The "EDRO #5" designation represents a proprietary manufacturing and quality control process ensuring superior micro-cleanliness and consistent performance in demanding thermal cycling conditions. ## **Key Characteristics & Advantages** * **Superior Thermal Fatigue Resistance (Heat Checking Resistance):** Excellent resistance to the formation of heat check cracks during repeated thermal cycling * **High Temperature Strength:** Maintains mechanical properties at elevated operating temperatures (up to 600°C) * **Good Toughness:** Resists catastrophic failure and crack propagation under thermal and mechanical stress * **Excellent Hardenability:** Deep and uniform hardening in large cross-sections * **Good Machinability & Polishability:** Allows for efficient manufacturing and high-quality surface finishes * **Moderate Wear Resistance:** Suitable for aluminum casting applications where abrasive wear is secondary to thermal stress * **Good Thermal Conductivity:** Efficient heat transfer from the die surface ## **International Standard Designations** | Standard | Designation | Equivalent Grades | | :--- | :--- | :--- | | **AISI** | H13 | Standard designation | | **DIN / W-Nr.** | 1.2344 | X40CrMoV5-1 | | **JIS** | SKD61 | - | | **GB (China)** | 4Cr5MoSiV1 | - | | **ISO** | 35CrMoV5 | - | | **UNS** | T20813 | - | | **Proprietary** | **EDRO #5** | Enhanced H13 for die casting | ## **Chemical Composition (%)** *Typical Analysis – Optimized for Die Casting* | Element | AISI H13 Range | EDRO #5 Typical | Primary Function | | :--- | :--- | :--- | :--- | | **Carbon (C)** | 0.32 - 0.45 | 0.38 - 0.42 | Provides base strength and hardenability | | **Chromium (Cr)** | 4.75 - 5.50 | 5.00 - 5.30 | Enhances hardenability, oxidation resistance, and tempering resistance | | **Molybdenum (Mo)** | 1.10 - 1.75 | 1.20 - 1.40 | Increases high-temperature strength and toughness | | **Vanadium (V)** | 0.80 - 1.20 | 0.90 - 1.00 | Forms stable carbides for wear resistance and grain refinement | | **Silicon (Si)** | 0.80 - 1.20 | 0.90 - 1.00 | Improves oxidation resistance and strengthens ferrite | | **Manganese (Mn)** | 0.20 - 0.50 | 0.30 - 0.40 | Aids hardenability and deoxidization | | **Sulfur (S)** | ≤ 0.03 | ≤ 0.005 | **Ultra-low for superior polishability** | | **Phosphorus (P)** | ≤ 0.03 | ≤ 0.015 | **Ultra-low for improved toughness** | | *Iron (Fe)* | *Balance* | *Balance* | | *Note: EDRO #5 typically features tighter compositional control and lower inclusion content (sulfur & phosphorus) than standard H13.* ## **Physical & Mechanical Properties** ### **Physical Properties** | Property | Value | Condition / Note | | :--- | :--- | :--- | | **Density** | 7.80 g/cm³ | At 20°C | | **Thermal Conductivity** | 24.0 - 28.0 W/(m·K) | At 20°C; improves with temperature | | **Specific Heat Capacity** | 460 J/(kg·K) | At 20°C | | **Coefficient of Thermal Expansion** | 10.4 × 10⁻⁶/K | 20-200°C | | **Elastic Modulus** | 210 GPa | At 20°C | | **Thermal Fatigue Parameter** | High | Key performance indicator | ### **Mechanical Properties (Heat Treated)** * **Annealed Hardness:** 190 - 220 HB * **Hardened & Tempered Hardness:** **44 - 48 HRC** (Typical for aluminum die casting) *Can be tempered to 48-52 HRC for higher strength applications* * **Tensile Strength at 20°C:** 1600 - 1850 MPa * **Yield Strength (0.2% offset) at 20°C:** 1400 - 1600 MPa * **Impact Toughness (Charpy):** 25 - 40 J (at working hardness) * **High-Temperature Properties (at 500°C):** * Tensile Strength: ~1000 MPa * Yield Strength: ~850 MPa * Hardness: ~35 HRC ## **Heat Treatment Guidelines** ### **Annealing** * **Temperature:** 840 - 870°C * **Cooling:** Slow furnace cool (≤ 20°C/hour) to 600°C, then air cool * **Resulting Hardness:** ≤ 220 HB ### **Stress Relieving** * **Temperature:** 650 - 700°C * **Cooling:** Air cool ### **Hardening** 1. **Preheating:** **Critical** to prevent thermal shock * First stage: 550 - 600°C * Second stage: 800 - 850°C 2. **Austenitizing Temperature:** 1020 - 1050°C * **1020-1030°C:** For optimum toughness (recommended for die casting) * **1040-1050°C:** For higher hardness and wear resistance 3. **Soaking Time:** 20-30 minutes per inch of thickness 4. **Quenching:** Quench in **air or vacuum/pressurized gas** for minimal distortion. Oil quenching possible for complex shapes. 5. **Cooling:** Cool to 40-60°C before tempering. ### **Tempering** * **Essential:** Must temper immediately (within 2 hours) and at least twice * **First Temper:** Within 30 minutes of reaching 50°C after quenching * **Typical Range:** 540 - 600°C for aluminum die casting applications * **Temperature vs. Hardness Relationship:** * 540°C: ~48-50 HRC * 560°C: ~46-48 HRC * 580°C: ~44-46 HRC * 600°C: ~42-44 HRC * **Hold Time:** 2 hours per inch minimum for each temper * **Cooling:** Air cool after each temper ## **Primary Applications** ### **Aluminum Die Casting (Primary Application)** * **Cavity & Core Inserts:** Main die components * **Shot Sleeves & Plunger Tips:** For cold chamber machines * **Nozzles & Sprue Bushings:** Gating system components * **Ejector Pins & Cores:** Moving die components * **Overflow Wells & Vent Pins** ### **Other Hot Work Applications** * **Zinc & Magnesium Die Casting:** Core pins and inserts * **Hot Forging Dies:** For aluminum, brass, and steel forgings * **Extrusion Dies:** For aluminum profiles * **Hot Stamping & Piercing Tools** * **Plastic Molds:** For high-temperature engineering plastics (PEEK, etc.) * **Glass Molds** ### **Tool Steel Applications** * **Arbors & Mandrels** * **Shear Blades for Hot Cutting** * **Hot Work Punches** ## **Surface Treatments & Coatings** * **Nitriding (Gas or Plasma):** Most common - increases surface hardness to 1000-1200 HV, improves erosion resistance * **Physical Vapor Deposition (PVD):** TiN, TiCN, CrN, AlCrN - reduce soldering and improve release * **Diffusion Treatments:** Improves oxidation resistance * **Polishing:** EDRO #5 is specifically produced for excellent polishability to mirror finishes (SPI #A1) ## **Machining & Fabrication** * **Machinability (Annealed):** Good (~65% of 1% carbon steel) * **EDM:** Excellent - standard parameters apply * **Grinding:** Good - use appropriate wheels (aluminum oxide) * **Welding:** Possible with proper preheat (400-500°C) and post-weld tempering * **Polishing:** Excellent due to low sulfur content and fine microstructure ## **Quality Specifications for Die Casting** EDRO #5 is typically supplied to meet stringent die casting standards: * **Micro-Cleanliness:** Per ASTM E45, Method A (D1 ≤ 1.0) * **Hardness Uniformity:** ±2 HRC max variation * **Ultrasonic Testing:** Per customer requirements * **Grain Size:** ASTM 7-8 or finer * **Isotropic Properties:** Minimized directionality ## **Tool Design & Maintenance Considerations** 1. **Cooling Line Design:** Critical for thermal management 2. **Preheating:** Dies should be preheated to 180-250°C before casting 3. **Thermal Cycling Management:** Minimize extreme temperature variations 4. **Regular Maintenance:** Polish out heat checks before they become critical 5. **Stress Relieving:** Periodic stress relief during tool life can extend service ## **Comparison with Other Hot Work Steels** | Property | EDRO #5 (H13) | H11 | H10 | H21 | | :--- | :--- | :--- | :--- | :--- | | **Temperature Resistance** | Excellent | Very Good | Excellent | Good | | **Toughness** | Excellent | Excellent | Good | Fair | | **Wear Resistance** | Good | Fair | Very Good | Good | | **Thermal Fatigue** | Excellent | Good | Very Good | Fair | | **Primary Use** | Al Die Casting | Forging | Brass/Bronze Casting | Hot Shearing | ## **Availability** * **Pre-hardened Blocks:** 30-36 HRC for machining * **Annealed Blocks & Bars:** For complete heat treatment control * **Custom Shapes:** Forged to near-net shape * **Pre-finished Plates:** Precision ground * **Round Bars:** For cores and ejector pins ## **Technical Notes** * **Heat Checking:** Inevitable over time; material selection and heat treatment can delay onset * **Softening:** Prolonged exposure above tempering temperature will cause gradual softening * **Safety:** Always follow proper heat treatment safety procedures --- **Disclaimer:** This technical information is for reference purposes. For specific applications, always consult the manufacturer's official technical data sheets and engage qualified metallurgical expertise. Actual performance depends on proper heat treatment, tool design, cooling, and operating parameters. "EDRO #5" is presented as a representative premium-grade H13; specifications may vary by supplier. -:- For detailed product information, please contact sales. -: EDRO #5 H13-Hot Work Tool Steel Specification Dimensions Size： Diameter 20-1000 mm Length <7144 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. -: EDRO #5 H13-Hot Work Tool Steel Properties -:- For detailed product information, please contact sales. -:

Applications of EDRO #5 H13-Hot Work Tool Steel Rod -:- For detailed product information, please contact sales. -: Chemical Identifiers EDRO #5 H13-Hot Work Tool Steel Rod -:- For detailed product information, please contact sales. -:

Packing of EDRO #5 H13-Hot Work Tool Steel Rod -:- 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 Rod 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 3615 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