EOS MaragingSteel MS1 DMSL on EOS M 290

EOS MaragingSteel MS1 DMSL on EOS M 290 Product Information -:- For detailed product information, please contact sales. -: EOS MaragingSteel MS1 DMSL on EOS M 290 Synonyms -:- For detailed product information, please contact sales. -:

EOS MaragingSteel MS1 DMSL on EOS M 290 Product Information -:- For detailed product information, please contact sales. -: # EOS MaragingSteel MS1 ## DMSL (Direct Metal Selective Laser Melting) on EOS M 290 System --- ### **Product Overview** **EOS MaragingSteel MS1** is a gas-atomized, precipitation-hardenable (maraging) steel powder specifically optimized for **Direct Metal Selective Laser Melting (DMSL)**, also known as Laser Powder Bed Fusion (LPBF). When processed on the **EOS M 290 industrial additive manufacturing system**, it enables the production of dense, high-strength, and complex metal parts directly from CAD data. The material is designed to be used in the **as-built condition for initial machining** and then **precipitation hardened** to achieve mechanical properties comparable to, and in some aspects superior to, wrought 18Ni(300) maraging steel. It is a cornerstone material for **additive manufacturing of high-performance tooling and end-use aerospace components**. --- ### **Chemical Composition (Weight %)** | Element | EOS MS1 Specification | Typical Wrought 18Ni(300) | Purpose in AM | |---------|----------------------|---------------------------|--------------| | **Nickel (Ni)** | 17.0 - 19.0 | 18.0 - 19.0 | Forms martensitic matrix; ensures hardenability and toughness in the layered build. | | **Cobalt (Co)** | 8.5 - 9.5 | 8.5 - 9.5 | Drives precipitation hardening response. | | **Molybdenum (Mo)** | 4.5 - 5.2 | 4.6 - 5.2 | Primary precipitation hardener. | | **Titanium (Ti)** | 0.6 - 0.8 | 0.55 - 0.80 | Secondary precipitation hardener. Optimized for minimal oxidation during melting. | | **Aluminum (Al)** | ≤ 0.10 | 0.05 - 0.15 | Deoxidizer; controlled for powder flowability. | | **Carbon (C)** | **≤ 0.03** | ≤ 0.03 | Kept ultra-low for weldability (inherent to AM process) and toughness. | | **Manganese (Mn)** | ≤ 0.10 | ≤ 0.10 | Residual. | | **Silicon (Si)** | ≤ 0.10 | ≤ 0.10 | Residual; affects wetting and melt pool stability. | | **Oxygen (O)** | **≤ 0.10%** (1000 ppm) | Not Specified | **Critical AM parameter.** High oxygen leads to poor mechanical properties and porosity. | | **Nitrogen (N)** | ≤ 0.05% | Not Specified | Controlled to prevent nitride formation. | | **Iron (Fe)** | Balance | Balance | Base element. | **Key Powder Characteristics (for EOS M 290):** * **Particle Size Distribution:** 15 - 45 µm (typical) * **Morphology:** Spherical, gas-atomized * **Flowability:** Excellent, critical for consistent recoating in the M 290 system * **Apparent Density:** ~4.0 - 4.2 g/cm³ --- ### **Standard Process & Heat Treatment on EOS M 290** 1. **DMSL Build Process (EOS M 290):** * **Laser:** Yb-fibre laser, 400W (standard) * **Build Atmosphere:** High-purity **Argon** or **Nitrogen**, O₂ < 0.1% * **Layer Thickness:** 40 µm (standard), 20 µm (for high detail) * **Default Parameters:** Utilizes optimized **EOS ParameterSet** for MS1 (e.g., speed, laser power, hatch spacing). * **As-Built Condition:** Primarily **martensitic** with some retained austenite. Hardness: ~35-38 HRC. **Ideal state for support removal and machining.** 2. **Post-Process Heat Treatment (Mandatory):** * **Stress Relief (Optional but Recommended):** 650°C for 1-2 hours, furnace cool. Reduces residual stresses from build. * **Solution Anneal:** 820°C ± 10°C for 1 hour per 25mm, **Argon or Vacuum atmosphere** to prevent oxidation, furnace cool. * **Aging (Precipitation Hardening):** 490°C ± 10°C for **6 hours**, air cool. *(Note: Aging time is often longer than for wrought to ensure complete precipitation in the AM microstructure).* --- ### **Mechanical Properties (Aged Condition - XY Build Plane)** *Properties are typically anisotropic. Values are typical for parts built on EOS M 290 with optimized parameters and full heat treatment.* | Property | XY Plane (Horizontal) | ZX Plane (Vertical) | Test Standard | Note | |----------|-----------------------|---------------------|---------------|------| | **Ultimate Tensile Strength** | 1950 - 2050 MPa (283 - 297 ksi) | 1850 - 1950 MPa (268 - 283 ksi) | ASTM E8 / ISO 6892-1 | ~95-98% of wrought strength. | | **0.2% Yield Strength** | 1900 - 2000 MPa (276 - 290 ksi) | 1800 - 1900 MPa (261 - 276 ksi) | ASTM E8 | | | **Elongation at Break** | 6 - 10% | 4 - 8% | ASTM E8 | Ductility is **build-direction dependent**. | | **Hardness** | 50 - 54 HRC | 50 - 54 HRC | ASTM E18 | Isotropic after aging. | | **Fatigue Strength (10⁷ cycles)** | ~500 - 600 MPa | ~450 - 550 MPa | ASTM E466 | Highly surface-finish dependent. **As-built surface drastically reduces fatigue life.** | | **Impact Toughness** | 20 - 35 J | 15 - 25 J | ASTM E23 | Lower than wrought due to layered microstructure. | **Key AM-Specific Considerations:** * **Density:** > 99.5% (typical with optimized parameters) * **Surface Roughness (As-Built):** Ra 10 - 25 µm. **Machining or surface finishing is required for functional surfaces.** * **Anisotropy:** Mechanical properties are typically **10-15% lower in the build (Z) direction** due to layer-by-layer fabrication and potential for lack-of-fusion defects parallel to layers. --- ### **Physical Properties** | Property | Value | |----------|-------| | **Density (Aged)** | ~8.0 g/cm³ | | **Thermal Conductivity** | ~20 W/(m·K) | | **Coefficient of Thermal Expansion** | ~10.5 x 10⁻⁶ /K | | **Melting Range** | ~1400 - 1440°C | --- ### **Key Advantages of MS1 on EOS M 290** * **Design Freedom:** Enables complex internal conformal cooling channels, lightweight structures, and part consolidation impossible with machining. * **Excellent As-Built Machinability:** The ~35 HRC as-built state is ideal for milling, drilling, and tapping to achieve tight tolerances before final aging. * **High Strength & Hardness After Aging:** Achieves near-wrought properties suitable for demanding applications. * **Good Process Stability:** Well-established material and parameter set for the EOS M 290, leading to predictable results. * **Material Efficiency:** Near-net-shape production minimizes waste of expensive maraging steel. --- ### **Applicable Standards & Certifications** * **Machine/Process:** EOS M 290 system certification (e.g., compliance with aerospace NADCAP AMS7000 series audit criteria). * **Material:** Powder certified to **EOS MS1 specification**. Can be supplied with **EN 10204 3.1/3.2 certificate**. * **Aerospace:** Emerging standards such as: * **SAE AMS7003:** Laser Powder Bed Fused 18Ni-300 Maraging Steel * **Customer-Specific Protocols:** Boeing, Airbus, NASA often have their own rigorous qualification matrices for AM parts. * **Quality:** Process must follow **ASTM F3301** (Standard for Additive Manufacturing – Post Processing Methods) and **ASTM F3122** (Standard for Mechanical Testing of AM Parts). --- ### **Primary Applications** 1. **Tooling & Molding (Dominant Application):** * **Injection Molds with Conformal Cooling Channels:** Drastically reduces cycle time and improves part quality. * **Die Casting Inserts and Cores.** * **Stamp and Form Dies.** * **Fixtures and Jigs** for aerospace assembly. 2. **Aerospace & Defense:** * **Lightweight, High-Strength Brackets and Housings.** * **Heat Exchangers and Manifolds** with optimized internal passages. * **Prototypes and Spare Parts** for legacy systems. * **Satellite Components.** 3. **Motor Sports & High-Performance Automotive:** * **Customized Lightweight Structural Components.** * **Cooling Components for Engines and Batteries.** 4. **Medical:** (After appropriate biocompatibility testing and surface finishing) * **Surgical Tool Inserts.** * **Customized Instrumentation.** --- ### **Design & Manufacturing Guidelines for EOS M 290** * **Design for AM (DfAM):** * **Optimize Orientation:** Position part to minimize Z-height and critical tensile stresses in the Z-direction. * **Manage Overhangs:** Maintain angles > 45° to avoid supports where possible. * **Incorporate Conformal Cooling:** Design smooth, gradual channels to avoid powder trapping. * **Support Structures:** Required for overhangs and to anchor part to build plate. MS1 supports are machinable but require careful removal. * **Post-Processing Sequence:** 1. Part removal from build plate (via wire EDM). 2. Support removal (machining, plier removal). 3. **Stress Relief** (recommended). 4. **Machining** of critical features and surfaces. 5. **Solution + Aging Heat Treatment.** 6. Final finishing (polishing, blasting, coating). * **Quality Control:** In-process monitoring (e.g., EOS EOSTATE), CT scanning for internal defects, and mechanical testing of witness coupons built alongside parts. --- ### **Summary** **EOS MaragingSteel MS1**, processed on the **EOS M 290 DMSL platform**, is a **mature and production-ready additive manufacturing material system** that brings the high performance of maraging steel into the realm of complex, optimized geometries. It transforms the **manufacturing paradigm for high-value tooling and lightweight components** by decoupling cost from complexity. While it exhibits slight anisotropy and requires careful post-processing, its ability to achieve **near-wrought mechanical properties after aging** makes it a compelling choice for engineers and manufacturers looking to leverage additive manufacturing for **functional, high-strength end-use parts**. Success depends on a holistic approach integrating **DfAM principles, validated EOS M 290 build parameters, and strict post-processing protocols.** -:- For detailed product information, please contact sales. -: EOS MaragingSteel MS1 DMSL on EOS M 290 Specification Dimensions Size： Diameter 20-1000 mm Length <7365 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 MaragingSteel MS1 DMSL on EOS M 290 Properties -:- For detailed product information, please contact sales. -:

Applications of EOS MaragingSteel MS1 DMSL on EOS M 290 -:- For detailed product information, please contact sales. -: Chemical Identifiers EOS MaragingSteel MS1 DMSL on EOS M 290 -:- For detailed product information, please contact sales. -:

Packing of EOS MaragingSteel MS1 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 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 3836 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