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M300 powder most commonly refers to powder made from 18Ni300 maraging steel, a precipitation-hardening alloy used in metal additive manufacturing. Its key appeal is the combination of strength potential after heat treatment and suitability for producing complex metal parts, but “M300” is not enough to define a purchase: chemistry, particle-size distribution, powder condition, and processing requirements must be confirmed with the supplier. In this guide, we explain how to assess the material, match it to an application, and compare specifications before requesting a quotation from JINGYE.
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This guide is for engineers, procurement teams, and manufacturers considering M300 powder for additive manufacturing or another qualified powder-metallurgy process. It is useful if you need to define a material specification, review a supplier quotation, or determine whether a maraging steel is suitable for a component. It is not a substitute for a project-specific material standard, process qualification, or engineering review.
M300 is a commonly used designation for 18Ni300 maraging steel, also described in some markets as a 300-grade maraging alloy. The material gains much of its strength through an aging heat treatment rather than relying only on high carbon content. The “300” designation is associated with a nominal tensile-strength class of about 300 ksi (approximately 2,070 MPa) for suitably processed and heat-treated material; it should not be interpreted as a guaranteed property of untreated powder or every finished part.
For powder buyers, the designation is a starting point, not a complete specification. Different suppliers may state product names, chemical limits, powder-production routes, or test methods differently. Before ordering, confirm that the quoted grade, chemistry, and documentation match the material standard and end-use requirements for your project.
Maraging steel is selected when a component needs high strength after an appropriate processing and aging route. In additive manufacturing, the final result also depends on machine settings, build orientation, part geometry, support strategy, and post-processing. Powder grade alone cannot guarantee the mechanical properties of a printed component, so buyers should request process-specific information where it is available and qualify the finished part for its intended service.
Heat treatment is especially important. Aging schedules and any solution treatment or stress relief depend on the material supplier’s guidance, the manufacturing route, and the component’s requirements. We recommend agreeing on the intended processing route before comparing mechanical-property targets or approving a powder for production.
Particle-size distribution affects powder handling and its behavior in a particular manufacturing process. For example, 15–45 μm and 20–63 μm are powder-size ranges buyers may encounter when discussing metal powder for different additive manufacturing setups. These are examples, not universal M300 specifications: the suitable range depends on the machine, recoating system, process parameters, and the supplier’s available product.
Ask for the full size distribution rather than relying on a single “mesh” or nominal size description. Useful points to confirm include the measurement method, the percentage below and above stated limits, powder flow or handling information, and whether the batch is virgin, reused, or blended. Do not assume that two products with the same nominal size range will perform identically.
Before purchase, request a batch-specific certificate of analysis or equivalent documentation and check what it covers. Depending on the supplier and order, relevant information may include chemical composition, particle-size results, manufacturing lot identification, and packaging details. Confirm the applicable test methods and acceptance criteria in writing, particularly if your company requires traceability or incoming inspection records.
M300 powder is commonly evaluated for metal additive manufacturing applications where a strong maraging-steel component and complex geometry are both relevant. Possible use cases include tooling components, engineering parts, and prototypes that need to be assessed against the properties of the finished, processed material. Actual suitability depends on design, loading, environment, manufacturing process, and validation results.
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To match the powder to an application, start with the component rather than the grade name. Define its mechanical requirements, operating environment, dimensional tolerances, surface-finish expectations, and production route. Then check that the material, machine, and post-processing plan can meet those requirements together.
| Buyer requirement | What to confirm | Why it matters |
|---|---|---|
| Manufacturing process | Machine compatibility and accepted powder-size distribution | Powder handling and build behavior are process-dependent. |
| Mechanical performance | Test condition, heat treatment, specimen orientation, and acceptance criteria | Powder designation alone does not establish finished-part properties. |
| Quality requirements | Batch documentation, traceability, and inspection needs | These details support incoming checks and project records. |
| Supply planning | Packaging, order quantity, availability, and delivery schedule | Commercial terms can affect qualification and production planning. |
Identify whether the powder is intended for laser powder bed fusion, another additive process, or a different powder-metallurgy route. Provide the equipment or process constraints that affect powder size and handling. If the process is still under development, tell suppliers which parameters are fixed and which are open for evaluation.
State the required material designation and any applicable standard, then list the chemistry limits, particle-size distribution, powder condition, and documentation you need. Include acceptance criteria instead of relying on general descriptions such as “fine powder” or “high strength.” If you have an approved reference specification, share it during the quotation process so suppliers can identify any differences before an order is placed.
Compare quotations on a like-for-like basis. Review grade confirmation, batch records, test methods, packaging, minimum order quantity, lead time, and the process for handling nonconforming material. A lower unit price may not represent a lower total sourcing cost if the specification, documentation, or delivery terms differ.
For a new powder source or process, establish an evaluation plan with your engineering and quality teams. This may include incoming inspection, a trial build, post-processing, and testing of representative specimens or parts. Agree on the acceptance criteria and responsibility for each stage before using the material in production.
M300 powder pricing depends on the confirmed grade, particle-size specification, order quantity, documentation needs, packaging, and current availability. Minimum order quantities and lead times can also vary by product and production schedule, so they should be confirmed in a current written quotation rather than assumed from a general product description. For an accurate comparison, provide the same technical and delivery requirements to each supplier.
If you are evaluating a small quantity, ask whether a sample or trial order is available and whether it comes from a traceable batch. Confirm whether the sample price, shipping, and documents are separate from a later production order. This helps buyers assess the full qualification cost, not only the powder price per unit.
At JINGYE, we support B2B buyers evaluating M300 powder by discussing the required grade, powder-size range, documentation, order quantity, and delivery needs before quotation. Share your application, process, and specification with us so we can confirm the relevant product and supply details. Where a requirement is not yet defined, we can help identify the information needed for a clear, comparable inquiry.
M300 powder generally refers to 18Ni300 maraging steel powder, but buyers should verify the exact grade and specification rather than rely on the name alone. Its potential value depends on the complete manufacturing route, including powder characteristics, machine compatibility, and post-processing; finished-part performance must be qualified for the intended use. A clear purchase specification and batch-document review are essential steps in supplier evaluation.
To move forward, prepare your application details, process requirements, target particle-size distribution, documentation needs, and estimated quantity. Send these details to JINGYE to request a technical review and quotation. This gives both sides a practical basis for confirming product fit, commercial terms, and the next qualification steps.
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