In stock
- COA on request — PSD, sphericity, flow rate, chemistry
- Mutual NDA before any file or spec review
M300 Maraging Steel Powder (1.2709) for DED & EBM — 45–106 µm, 10 kg
M300 powder price: $320 per 10 kg ($32.00/kg)
Age-hardenable maraging tool steel in the coarse 45–106 µm cut for directed energy deposition and electron-beam powder bed systems. High strength and hardness after a simple solution and age. Made by Carpenter Additive (PowderRange M300).
Values from the Carpenter PowderRange M300 datasheet.
Which tool steel is right for your build?
All of them are in our catalog at a published price. Pick by machine, timing and country of origin.
| Powder | Particle size | Origin | Availability | Good fit for | 10 kg | |
|---|---|---|---|---|---|---|
 Carpenter Additive M300 FFine cut | 15–45 µm · LPBF | Confirmed per lot | In stock | Mold and die inserts; proven LPBF processability | $945 | View |
 Carpenter Additive M300 EThis page | 45–106 µm · DED, EBM | Confirmed per lot | In stock | Directed energy deposition and electron-beam systems | $320 | Add to cart |
 CNPC Powder 18Ni300Named manufacturer | 15–53 µm · LPBF | China | Made to order | Lower price per kg | $590 | View |
 Carpenter Additive H13Hot-work tool steel | 15–45 µm · LPBF | Confirmed per lot | In stock | Programs that specify H13; harder to print than maraging steel | $485 | View |
Need a specific country of origin for a government or defense program? Ask before ordering and we will confirm it in writing for your lot.
What is in the container
Specification from the manufacturer. The certificate for your lot is available on request.
Specification
Type analysis, PowderRange M300 datasheet (Carpenter Additive). Single figures are nominal except where noted.
| Element | wt% |
|---|---|
| Iron (Fe) | Balance |
| Nickel (Ni) | 17.0–19.0 |
| Cobalt (Co) | 8.50–10.0 |
| Molybdenum (Mo) | 4.50–5.20 |
| Titanium (Ti) | 0.80–1.20 |
| Chromium (Cr) | 0.25 |
| Manganese (Mn) | 0.15 |
| Oxygen (O) | 0.10 |
| Silicon (Si) | 0.10 |
| Carbon (C) | 0.030 |
| Phosphorus (P) | 0.010 |
| Sulfur (S) | 0.010 |
| Powder property | Requirement |
|---|---|
| Above 106 µm | max 10 wt% (ASTM B214) |
| Below 45 µm | max 10 wt% (ASTM B214) |
| D10 / D50 / D90 | measured and reported on the lot certificate |
| Hall flow, apparent density | measured and reported (ASTM B213, B212) |
| Melting and atomization | Nitrogen gas atomized |
What the particles look like
From the manufacturer datasheet
SEM image of typical PowderRange M300 powder, from the Carpenter Additive datasheet; scale bar 100 µm.
Each order ships with the Carpenter Additive certificate of analysis for its lot: chemistry, particle size distribution (D10/D50/D90) and density. Ask us if you need to see a recent certificate before ordering.
How the printed metal performs
These are Carpenter laser powder bed fusion (F cut) values for PowderRange M300, shown for reference: DED and EBM parts have different properties. Average of at least 5 samples; not design data.
| Condition | Orientation | Yield, MPa | UTS, MPa | Elongation | Impact, J | HRC |
|---|---|---|---|---|---|---|
| As-built | X–Y | 1020 | 1262 | 16% | 41 | 29 |
| Z | 1055 | 1262 | 15% | 39 | 29 | |
| Stress relief + solution + age | X–Y | 2117 | 2186 | 6% | 9 | 54 |
| Z | 2117 | 2186 | 6% | 9 | 54 | |
| HIP + solution + age | X–Y | 2041 | 2130 | 6% | 9 | 52 |
| Z | 2027 | 2130 | 4% | 7 | 52 | |
| Forged bar reference | X–Y | 2000 | 2027 | 11% | — | 52 |
Heat treatment
Carpenter datasheet, process guidance
- Stress relief and solution in one step: 816–870 °C (1500–1600 °F) for at least 30 minutes, air cool.
- Age: 482 °C (900 °F) for at least 3 hours, air cool.
- HIP to close porosity: at least 100 MPa (14.5 ksi) at about 1121 °C (2050 °F) for 240 minutes or more under inert gas, then solution and age.
- Machine in the solution-annealed condition (about 30 HRC); only light machining after aging.
Corrosion, comparative rating
From wrought-alloy experience; test your printed parts
| Humidity | Restricted | Overall | Limited corrosion resistance |
Specifications, equivalent names and how M300 compares
Specifications
From the manufacturer datasheet
| Applicable | Not listed on the datasheet |
| Associated | AMS6514, AMS6521, AMS6463, AMS-S-46850, SAE J1099 (A538C), MIL-S-46850, UNS K93120, K93130, K93160 |
Equivalent names on LPBF machines
“Similar materials” in the datasheet; for parameter selection only, not machine-maker approvals
| Generic | Maraging steel, ISO X3NiCoMo-Ti18-9-5 |
| 3D Systems | LaserForm Maraging Steel |
| GE Additive (Concept Laser) | M300 |
| EOS | ToolSteel 1.2709 |
| Renishaw | 1.2709 |
| SLM Solutions | 1.2709 |
How it compares
Published tensile data, X–Y direction unless noted, one representative condition per alloy. Conditions differ, so use this to shortlist, not to design.
| Alloy | Condition | Yield, MPa | UTS, MPa | Elongation | Choose it for | 10 kg |
|---|---|---|---|---|---|---|
| M300 | Stress relief + solution + age (LPBF, F cut) | 2117 | 2186 | 6% | Highest strength and hardness; limited corrosion resistance | $320 |
| 15-5PH | Solution + H900 | 1296 | 1448 | 13.9% | Highest strength of the PH stainless steels; corrosion resistance to 316 °C | $580 |
| 17-4 AR | Solution (Sol) | 1209 | 1342 | 17% | Full martensite; meets ASTM A564 H900 minimums | $705 |
Will it run on my printer?
The 45–106 µm E cut is made for electron-beam powder bed fusion and powder-fed directed energy deposition. For laser powder bed fusion, use the 15–45 µm F cut listed above. Check the particle-size range your machine maker specifies.
Store sealed
Keep the container closed, dry and at room temperature until you load the printer.
Sieve
Sieve before loading and every time you reuse powder recovered from a build.
ATO Sieve · quoteLoad
Fill the hopper or powder feeder and run your machine’s vacuum or inert-gas procedure.
Print and relieve
Stress-relieve on the plate, then remove parts and supports.
Recover
Collect unfused powder, sieve it and return it to a sealed container.
Delfin Mistral 451 BL D2 — ATEX metal powder vacuum · $7,175Wear a respirator, gloves and eye protection when handling metal powder. Read the safety data sheet before first use.
Printed on AO Metal
Real builds on the LPBF printers we sell, and what teams make from this alloy.
Parts printed on AO Metal printers, which we sell. Alloys, parameters and powder lots differ from part to part; these photos show the process, not parts made from this specific powder lot.
- Tool inserts for molding and casting
- Tire sipes and molds
- Hard-wearing functional components
Applications as listed by Carpenter Additive for PowderRange M300.
Ordering, delivery and our promise
10 kg of 45–106 µm powder, sealed, traceable to its Carpenter lot certificate.
The ship date shows next to the Add to Cart button. Shipping cost is calculated at checkout.
Card or PayPal at checkout, an invoice, or a purchase order — choose how you buy next to Add to Cart.
100 kg and more: ask for a volume quote with your alloy, quantity and ship-to.
If the powder is not right, we make it right.
If your lot’s chemistry or particle size falls outside its certificate or this page, or it arrives damaged or wrong, tell us within 14 days of delivery. We replace it or refund you, and we pay for shipping both ways.
Complete the workflow
- ✓ 316L — stronger pitting and chemical resistance than 304 stainless
- ✓ Precision-ground flatness for consistent first-layer adhesion
- ✓ Made to order — choose your speed below: Express 2–3 wks, or Standard 6–8 wks (save ~45%)
ATEX-certified industrial vacuum for combustible dust and non-reactive metal powder — built to the D2 standard for Zone 22 areas, with antistatic, grounded construction and a Class M filter. 2 kW, 3-inch inlet, 12-gallon container.
- ✓ Conductive / antistatic build — no static build-up around ignition-sensitive powder
- ✓ For stainless, nickel & non-reactive AM powder — reactive metals need the inert unit
- ✓ In US stock · ships in 2–3 business days · genuine Delfin unit · ATEX docs on request
Automated 2-in-1 blasting cell that depowders and surface-finishes powder-bed 3D-printed parts in one enclosed, software-controlled cycle.
- ✓ Depowdering + surface finishing in one ATEX-compliant cell
- ✓ Polymer PBF (SLS, MJF, HSS, SAF) + de-powdered metal parts
- ✓ Lead time: 4–8 weeks — built to order · install + training included
- ✓ High toughness & thermal-fatigue resistance for die-casting tooling
- ✓ Gas-atomized — COA on request
- ✓ Sold in small, workable volumes
Other alloys in US stock now
Premium-grade LPBF powders, COA on request — add to cart or request a formal quote.
Carpenter Additive · Made in USAM300 Maraging Steel Powder for Metal 3D PrintingIn stock · ships in ~2 business days$945 / 10 kg · $94.50/kg
Carpenter Additive · Made in AustriaAluminum Alloy Powder AlSi10MgIn stock · ships in ~2 business days$830 / 10 kg · $83.00/kg
Amaero · Made in USATi64 Grade 23 (ELI) Titanium Alloy Powder for Metal 3D PrintingIn stock · ships in ~2 business days$2,405 / 10 kg · $240.50/kg
Carpenter Additive · Made in Sweden316L Stainless Steel Powder for Metal 3D PrintingIn stock · ships in ~2 business days$680 / 10 kg · $68.00/kgCommon questions
Don't see yours? Email [email protected] — NDA on request.
Is this M300 maraging steel powder powder for laser powder bed fusion (LPBF)?
What is PowderRange M300 maraging steel powder (45–106 µm)?
How do I heat treat M300 maraging steel?
How does M300 compare with H13 tool steel?
Is M300 maraging steel corrosion-resistant?
Does M300 maraging steel powder come with a certificate of analysis?
How fast does M300 maraging steel powder ship, and how can I pay?
Place your order, or talk to an engineer first
Order M300 Maraging Steel Powder for DED & EBM | 45–106 µm - 10 kg / 22 lbs direct, or talk to materials engineer