Markforged,D2 v2 3D PrintedTool Steel Wire, Heat-Treated

Markforged D2 v2 3D PrintedTool Steel Wire, Heat-Treated Product Information -:- For detailed product information, please contact sales. -: Markforged D2 v2 3D PrintedTool Steel Wire, Heat-Treated Synonyms -:- For detailed product information, please contact sales. -:

Markforged D2 v2 3D PrintedTool Steel, Heat-Treated Product Information -:- For detailed product information, please contact sales. -: # **Product Introduction: Markforged D2 v2 3D Printed Tool Steel (Heat-Treated)** ## **1. Overview** **Markforged D2 v2 3D Printed Tool Steel** is an advanced **additively manufactured (AM) version of the high-carbon, high-chromium cold work tool steel**, produced via the second-generation **Metal Fused Filament Fabrication (Metal FFF)** process followed by rigorous thermal processing. This material digitally replicates the renowned **AISI D2 (UNS T30402)** alloy, engineered to deliver **exceptional wear resistance and high hardness in complex, monolithic geometries** unattainable through conventional manufacturing. The "v2" designation signifies an evolved formulation and process optimized for improved **sintered density, reduced porosity, and more consistent mechanical properties** compared to earlier iterations. It enables the production of durable tooling inserts, wear parts, and forming dies with intricate internal features like conformal cooling, making it a strategic material for extending service life and solving thermal management challenges in demanding production environments. ## **2. Manufacturing Process & Specifications** This material is defined by Markforged's proprietary digital manufacturing ecosystem and subsequent thermal cycles. * **Primary Manufacturing Process:** * **Markforged Metal FFF v2 Process (Metal X System):** An advanced two-stage additive manufacturing workflow: 1. **Printing:** Precise extrusion of a D2 tool steel powder-filled polymer filament to build a "green" part layer by layer. 2. **Post-Processing:** * **Wash (Debinding):** Removal of the primary polymer binder in a Wash-1 station. * **Sinter:** High-temperature furnace cycle to remove residual binders and fuse metal particles into a near-full-density solid. This results in the "brown" part. * **Mandatory Final Heat Treatment:** The sintered part **must undergo** a complete **austenitize, quench, and temper (AQT) cycle** in a controlled atmosphere (vacuum or argon) furnace to develop the final martensitic microstructure with secondary carbides, achieving the high hardness and wear resistance characteristic of D2 tool steel. * **Material Classification:** * **Type:** **Additively Manufactured D2-Type Tool Steel (Second Generation)**. * **Standard Reference:** Targets the chemistry and performance envelope of **ASTM A681 AISI D2 / UNS T30402**, but **properties are process- and geometry-dependent**. Markforged provides **guaranteed minimum** mechanical property data for standardized test artifacts. * **Industry Context:** Competes with other AM-processed high-carbon, high-chromium steels from Binder Jetting (BJT) and Laser Powder Bed Fusion (LPBF) technologies, offering a specific balance of cost, surface finish, and ease of operation. ## **3. Chemical Composition (Weight %, Target)** The feedstock is engineered to yield a post-sintering chemistry that closely matches standard D2 specifications. | Element | Target Range (%) (Post-Sintering) | Role in D2 | |---------|-----------------------------------|------------| | **Carbon (C)** | ~1.40 – 1.60 | Forms chromium carbides for extreme wear resistance. Sintering atmosphere is critical for carbon control. | | **Chromium (Cr)** | ~11.00 – 13.00 | Primary alloy; forms hard Cr₇C₃ carbides and provides hardenability. | | **Molybdenum (Mo)** | ~0.70 – 1.20 | Enhances hardenability, toughness, and tempering resistance. | | **Vanadium (V)** | ~0.50 – 1.10 | Forms ultra-hard VC carbides for added wear resistance and grain refinement. | | **Manganese (Mn)** | ~0.20 – 0.60 | Aids hardenability. | | **Iron (Fe)** | Balance. | | ## **4. Typical Physical & Mechanical Properties (As Printed & Heat Treated)** * **Critical Note on Anisotropy:** Like all layer-based AM processes, properties are **directionally dependent**. Strength and ductility are typically highest in the plane of printing (XY) and lower in the build direction (Z). * **Density:** >99% of theoretical density post-sintering (with potential for optional Hot Isostatic Pressing (HIP) to achieve 100% and improve toughness). * **As-Sintered Condition:** Relatively soft, allowing for machining, drilling, or EDM to add final features before the hardening heat treatment. * **After Final Heat Treatment (Typical Values for Optimal XY Orientation):** * **Hardness:** **58 – 62+ HRC** (achievable with proper AQT cycle). The high alloy content supports high hardness. * **Ultimate Tensile Strength (UTS):** **1600 – 1900 MPa** (232,000 – 275,000 psi). *[Guaranteed minimums are lower, e.g., ~1500 MPa].* * **Yield Strength (0.2% Offset):** **1400 – 1700 MPa** (203,000 – 246,000 psi). * **Elongation at Break:** **< 2%.** **Very low ductility** is a hallmark of both wrought and AM D2, but the AM microstructure (sinter necks, potential micro-porosity) can make it more brittle than its wrought counterpart. * **Impact Toughness:** **Low.** D2 is inherently brittle; the AM process does not improve this. Not suitable for shock or impact loading. * **Wear/Abrasion Resistance:** **Excellent.** The primary reason for selecting this material. The high volume of chromium and vanadium carbides in the hardened matrix provides outstanding resistance to abrasive wear. * **Dimensional Change:** Significant and predictable shrinkage occurs during sintering (~17-20%). The heat treatment step also causes dimensional changes that must be accounted for in the initial CAD design. ## **5. Product Application** Ideal for **complex, wear-intensive tooling components** where geometry-driven performance outweighs the need for high toughness. * **Wear-Resistant Tooling Inserts:** * **Injection mold cores/cavities** for abrasive plastics (glass-filled, mineral-filled) featuring **conformal cooling channels** to manage heat and further extend life. * **Blanking, punching, and forming die inserts** with complex internal cooling or lightweight structures. * **Custom Wear Parts & Tooling:** * **Nozzles, liners, and guides** for abrasive media handling. * **Cutting blades, slitters, and knives** with optimized geometries. * **Jigs and fixtures** subject to abrasive wear in high-volume production. * **Repair & Hybrid Tooling:** * **Replacement of worn sections** on large dies or molds with a perfectly fitting, printed insert. * **Adding complex wear-resistant features** to a conventional base tool. ## **6. Key Features & Advantages** * **Wear Resistance in Complex Shapes:** Delivers the legendary wear resistance of D2 in geometries that solve thermal and mechanical design challenges (conformal cooling, latticed structures). * **Design Freedom & Integration:** Enables part consolidation, internal channels, and topology-optimized lightweight designs impossible to machine. * **Material Efficiency & Rapid Lead Time:** Near-net-shape production reduces waste and can shorten the tooling development cycle from weeks to days. * **Achieves Production-Grade Hardness:** Proper post-processing yields hardness levels suitable for demanding production environments. * **Office-Compatible Process:** Metal FFF is more accessible than powder-bed systems, with safer feedstock handling. ## **7. Critical Design & Processing Considerations** * **Inherent Brittleness:** **D2 is not a tough steel.** AM D2 v2 is equally or more brittle. **Designs must avoid tensile stress concentrations, sharp corners, and thin, unsupported sections.** The primary loading should be compressive. * **Anisotropy is Crucial:** **Orient the part so that the primary applied loads lie within the XY printing plane.** The Z-direction is the weakest. * **Complex, Mandatory Post-Processing:** The journey from "green" part to finished tool involves **Wash, Sinter, and Heat Treatment** in separate, specialized equipment. This requires significant time, expertise, and adds cost. * **Shrinkage & Distortion:** Sintering shrinkage is large and must be compensated for in the initial CAD model via scaling. Heat treatment can also induce distortion. * **Surface Finish & Porosity:** As-sintered surfaces have a characteristic texture and may contain micro-porosity. Critical functional surfaces may require finishing (grinding, polishing) or surface enhancement (nitriding, PVD coating). * **Not a Wrought Replacement:** It is a **complement** to conventional D2, best used for applications leveraging its geometric advantages, not for replacing a simple, solid D2 punch or die block. **Summary:** Markforged D2 v2 3D Printed Tool Steel is a specialized digital manufacturing solution for **extreme wear problems in complex geometries.** It brings the unmatched abrasion resistance of D2 into the realm of additive design, allowing engineers to create tools that not only last longer but also perform better through integrated cooling and optimized structures. Its successful application requires a clear understanding of its limitations—primarily low toughness and anisotropic behavior—and a design philosophy that exploits its strengths while meticulously avoiding its weaknesses. For the right application, such as a conformally cooled mold insert for abrasive plastics, it represents a transformative leap in tooling performance and longevity. -:- For detailed product information, please contact sales. -: Markforged D2 v2 3D PrintedTool Steel, Heat-Treated Specification Dimensions Size： Diameter 20-1000 mm Length <7062 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. -: Markforged D2 v2 3D PrintedTool Steel, Heat-Treated Properties -:- For detailed product information, please contact sales. -:

Applications of Markforged D2 v2 3D PrintedTool Steel Wire, Heat-Treated -:- For detailed product information, please contact sales. -: Chemical Identifiers Markforged D2 v2 3D PrintedTool Steel Wire, Heat-Treated -:- For detailed product information, please contact sales. -:

Packing of Markforged D2 v2 3D PrintedTool Steel Wire, Heat-Treated -:- 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 Wire 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 3533 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