EOS,ToolSteel Rod/Bar 1.2709 DMSL on EOS,M 290

EOS ToolSteel Rod 1.2709 DMSL on EOS M 290 Product Information -:- For detailed product information, please contact sales. -: EOS ToolSteel Rod 1.2709 DMSL on EOS M 290 Synonyms -:- For detailed product information, please contact sales. -:

EOS ToolSteel 1.2709 DMSL on EOS M 290 Product Information -:- For detailed product information, please contact sales. -: # EOS ToolSteel 1.2709 ## DMSL on EOS M 290 System --- ### **Product Overview** **EOS ToolSteel 1.2709** is a gas-atomized powder of **18Ni-300 maraging steel**, specifically optimized for the **Direct Metal Selective Laser Melting (DMSL)** process on the **EOS M 290** industrial additive manufacturing system. This material-system combination is the **industry-standard solution** for producing high-density, high-strength tooling inserts and end-use components via Laser Powder Bed Fusion (LPBF). After a post-build precipitation hardening heat treatment, it achieves mechanical properties comparable to wrought 1.2709 / X3NiCoMoTi 18-9-5, with typical hardness of 50-54 HRC and ultimate tensile strength exceeding 2000 MPa. Its excellent as-built machinability and predictable aging response make it the premier choice for **conformal-cooled injection molds, die-casting inserts, and high-performance tooling**. --- ### **Chemical Composition (Weight %)** *Conforms to DIN/ISO 1.2709 and is optimized for LPBF processing.* | Element | EOS 1.2709 Specification | Equivalent Wrought (X3NiCoMoTi 18-9-5) | Role in AM Process | |---------|--------------------------|----------------------------------------|-------------------| | **Nickel (Ni)** | 17.0 - 19.0 | 17.0 - 19.0 | Primary matrix former; ensures martensitic transformation. | | **Cobalt (Co)** | 8.5 - 9.5 | 8.5 - 9.5 | Drives precipitation hardening response. | | **Molybdenum (Mo)** | 4.5 - 5.2 | 4.5 - 5.2 | Key precipitation hardener (Ni₃Mo). | | **Titanium (Ti)** | 0.6 - 0.8 | 0.6 - 0.8 | Secondary hardener (Ni₃Ti). | | **Aluminum (Al)** | ≤ 0.10 | ≤ 0.10 | Deoxidizer. | | **Carbon (C)** | **≤ 0.03** | ≤ 0.03 | Ultra-low for weldability and toughness. | | **Silicon (Si)** | ≤ 0.10 | ≤ 0.10 | Residual. | | **Manganese (Mn)** | ≤ 0.10 | ≤ 0.10 | Residual. | | **Oxygen (O)** | **≤ 0.08% (800 ppm)** | Not Specified | **Critical AM parameter.** Impacts density and ductility. | | **Iron (Fe)** | Balance | Balance | Base element. | **Powder Characteristics for EOS M 290:** * **Particle Size Distribution:** 15 - 45 µm (optimized for 40 µm layers) * **Morphology:** Spherical, gas-atomized * **Flowability:** Excellent (Hall Flow < 30 s/50g) * **Apparent Density:** ~4.0 - 4.2 g/cm³ --- ### **EOS M 290 Build Process & Parameters** **System Configuration:** * **Laser:** Yb-fibre laser, 400W * **Build Volume:** 250 x 250 x 325 mm * **Atmosphere:** High-purity Argon (O₂ < 0.1%) * **Layer Thickness:** **40 µm** (Standard), 20 µm (High Detail) * **Scan Strategy:** Stripes or Chessboard with 67° rotation between layers **Standard EOS Parameters:** * Uses **EOS ParameterSet for ToolSteel 1.2709** * **Laser Power:** ~285 - 320 W * **Scan Speed:** ~800 - 1200 mm/s * **Hatch Spacing:** ~0.10 - 0.14 mm * **Volumetric Energy Density:** ~60 - 90 J/mm³ **As-Built State:** * **Microstructure:** Fine cellular/dendritic martensite * **Hardness:** 34 - 38 HRC (ideal for machining) * **Density:** **> 99.7%** (with optimized parameters) * **Surface Roughness:** Ra 10 - 20 µm (as-built) --- ### **Post-Processing Heat Treatment** 1. **Stress Relief (Optional):** 650°C for 2 hours, furnace cool 2. **Solution Annealing:** 820°C ± 10°C for 1-2 hours, Argon/Vacuum, furnace cool 3. **Aging:** **490°C for 6 hours**, air cool *(EOS recommended for AM parts)* --- ### **Mechanical Properties (After Full Heat Treatment)** | Property | XY Plane (Typical) | Z-Direction (Typical) | Test Standard | Notes | |----------|-------------------|-----------------------|---------------|-------| | **Ultimate Tensile Strength** | 2000 - 2100 MPa | 1900 - 2000 MPa | ASTM E8 | | | **0.2% Yield Strength** | 1950 - 2050 MPa | 1850 - 1950 MPa | ASTM E8 | | | **Elongation** | 8 - 12% | 6 - 10% | ASTM E8 | | | **Hardness** | 50 - 54 HRC | 50 - 54 HRC | ASTM E18 | | | **Fatigue Strength (10⁷, R=-1)** | 550 - 650 MPa | 500 - 600 MPa | ASTM E466 | Machined surface | | **Impact Energy (Charpy V)** | 20 - 30 J | 15 - 25 J | ASTM E23 | | | **Thermal Conductivity** | ~20 W/(m·K) | ~20 W/(m·K) | - | Aged condition | --- ### **Key Characteristics & Advantages** * **Excellent As-Built Machinability:** ~35 HRC allows for easy milling, drilling, and tapping before final hardening * **High Strength & Hardness After Aging:** Comparable to wrought 1.2709 tool steel * **Minimal Distortion During Aging:** < 0.05% dimensional change * **Good Polishing & Texturing Capability:** Suitable for high-gloss mold surfaces * **Thermal Conductivity:** Similar to conventional tool steels * **Weldability:** Can be repaired using similar filler materials --- ### **International Standards & Certifications** * **Material Standard:** DIN/ISO 1.2709 (X3NiCoMoTi 18-9-5) * **AM Process:** EOS ParameterSet certification * **Industry Standards:** * **VDI 3405 Blatt 3:** Additive manufacturing processes - Quality assurance * **ISO/ASTM 52921:** Standard terminology for additive manufacturing * **Customer-specific qualifications** for automotive and aerospace tooling --- ### **Primary Applications** 1. **Injection Molding (80% of applications):** * **Conformal-cooled inserts** for plastic injection molds * **Cores and cavities** with complex cooling channels * **Hot runner components** 2. **Die Casting:** * **Cores and inserts** for aluminum and magnesium die casting * **Shot sleeves and nozzles** 3. **Other Tooling Applications:** * **Stamping and forming dies** * **Blow molds** * **Composite molding tools** 4. **End-Use Components:** * **Aerospace brackets and fixtures** * **Medical device components** (after appropriate finishing) * **High-performance automotive parts** --- ### **Design Guidelines for EOS M 290** **Critical Design Rules:** * **Minimum Wall Thickness:** 0.8 mm * **Minimum Hole Diameter:** 1.0 mm (through), 2.0 mm (blind) * **Self-supporting Angle:** 45° (recommended) * **Channel Diameter for Conformal Cooling:** ≥ 6 mm (circular), ≥ 8 mm (cross-section) * **Escape Holes for Powder Removal:** ≥ 8 mm diameter **Build Orientation Considerations:** * **For Best Surface Finish:** Orient critical surfaces vertically or at angle > 45° * **For Maximum Strength:** Align primary load direction in XY plane * **To Minimize Supports:** Orient to maximize self-supporting features --- ### **Quality Assurance** * **In-process Monitoring:** EOSTATE monitoring suite * **Post-process Testing:** * Density measurement (Archimedes method) * Hardness testing * Tensile testing from witness samples * CT scanning for internal defects (critical applications) * **Certification:** Material certificates per EN 10204 3.1 --- ### **Economic Advantages** * **Reduced Lead Time:** Complex tools in days instead of weeks * **Improved Tool Performance:** Conformal cooling reduces cycle time by 20-40% * **Part Consolidation:** Multiple components integrated into single build * **Material Efficiency:** Near-net shape production minimizes waste --- ### **Limitations & Considerations** * **Anisotropy:** Mechanical properties vary by build direction * **Surface Finish Requirement:** As-built surfaces need machining for functional applications * **Size Limitation:** Maximum part size limited to 250 x 250 x 325 mm * **Post-processing Required:** Heat treatment and machining are mandatory --- ### **Comparison with Conventional Manufacturing** | Aspect | EOS 1.2709 on M 290 | Conventional 1.2709 | |--------|---------------------|---------------------| | **Cooling Channel Design** | Complex conformal channels | Limited to straight drilled holes | | **Lead Time** | Days to weeks | Weeks to months | | **Material Waste** | < 5% (near-net shape) | 40-80% (machined from block) | | **Design Complexity** | Virtually unlimited | Limited by machining access | | **Surface Finish** | Requires machining | Directly machinable | | **Tool Performance** | Superior cooling efficiency | Standard cooling | --- ### **Summary** **EOS ToolSteel 1.2709** processed on the **EOS M 290 DMSL system** represents a **mature, production-proven solution** for manufacturing high-performance tooling and components. It combines the **design freedom of additive manufacturing** with the **exceptional mechanical properties of maraging steel**, enabling the production of tools with superior cooling capabilities and reduced cycle times. While requiring careful post-processing, this material-system combination delivers **significant performance improvements and economic benefits** for injection molding, die casting, and other tooling applications. It has become the **industry standard** for conformal-cooled tool inserts and continues to drive innovation in tool design and manufacturing. -:- For detailed product information, please contact sales. -: EOS ToolSteel 1.2709 DMSL on EOS M 290 Specification Dimensions Size： Diameter 20-1000 mm Length <7370 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. -: EOS ToolSteel 1.2709 DMSL on EOS M 290 Properties -:- For detailed product information, please contact sales. -:

Applications of EOS ToolSteel Rod 1.2709 DMSL on EOS M 290 -:- For detailed product information, please contact sales. -: Chemical Identifiers EOS ToolSteel Rod 1.2709 DMSL on EOS M 290 -:- For detailed product information, please contact sales. -:

Packing of EOS ToolSteel Rod 1.2709 DMSL on EOS M 290 -:- 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 3841 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