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In every order
- Full lot COA — PSD, sphericity, flow rate, chemistry
- Qualified parameter sets for the major LPBF systems
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- Free U.S. shipping over $200 · fast dispatch from L.A.
Materials, Iron Base, LPBF (DMLS) 3D Printing Materials, Metal Powders 3D Printing Materials · Metal LPBF
15-5 Stainless Steel Powder for Metal 3D Printing | LPBF Compatible – 10 kg / 22 lbs
High strength. Cleaner properties. Heat-treatable. Genuine Carpenter PowderRange® 15-5 (15-5PH) precipitation-hardening stainless steel for LPBF metal 3D printing.
- ✓ Gas-atomized, low-oxygen — full COA on every lot
- ✓ Sold in small, workable volumes — no large mill minimums
- ✓ Fast dispatch from Los Angeles
NDA standard
Ships in 1–2 business days
Spec-match guarantee on every lot
Built for production teams
What your process engineer actually checks
Locked, traceable lot chemistry
Every lot ships with a COA documenting PSD, sphericity, flow rate, apparent density, and full chemistry — and a lot number you can trace. Aerospace and medical teams reorder 4+ times without re-qualifying.
Qualified parameters, not just powder
Validated parameter sets for EOS M 290, Renishaw 500Q, SLM 280, and our own AO Metal LPBF ship with the order. Load the profile and hit density on the first build — no parameter-development burn.
A materials engineer on the line
Questions on ferrite content, flowability, recyclate ratios, or HIP response? A materials engineer answers directly — not a contact-form bot. Most replies in under 4 hours, NDA standard.
About this product
PowderRange® 15-5 (15-5PH) is a martensitic, precipitation-hardening stainless steel powder for laser powder bed fusion (LPBF). Closely related to 17-4 but with reduced delta-ferrite, it offers higher strength, toughness and cleaner transverse properties, with excellent corrosion resistance and reliable performance up to 600°F (316°C).
Like 17-4, it age-hardens in a single, low-temperature step, so you can tune the strength-to-toughness balance for functional production parts, rapid tooling and prototyping.
Why teams buy this powder from Additive Plus
- Genuine Carpenter PowderRange® 15-5 — gas-atomized for high sphericity, low oxygen and consistent flow.
- Available in small, workable volumes. Most mills sell large minimums and hide pricing behind an account. We stock this alloy and sell it in accessible quantities at a clear, published price.
- Full COA with every lot — particle size distribution, chemistry, apparent density and flow rate, with a traceable lot number.
- Fast dispatch from Los Angeles.
- Need a custom alloy or a tighter cut? We also run our own atomization in-house and can produce custom small-batch powder on request — separate from this stocked product.
Standards & equivalents
- Applicable specification: AMS 5659
- Equivalents / alternate names: 15-5PH · PH1 · UNS S15500 · 1.4545
- Machine type: F — LPBF · Particle size: 15–45 µm · Bottle: 10 kg / 22 lbs
- Quality: manufactured by Carpenter Additive under AS9100, AS9120, ISO 9001 & ISO 13485 quality systems. (These certifications are Carpenter’s, covering the powder; Additive Plus resells genuine, fully traceable lots and is not itself a certified manufacturer.)
Chemical composition
Typical chemistry (wt%), per the Carpenter PowderRange® datasheet:
| Element | Content | Element | Content |
|---|---|---|---|
| Iron (Fe) | Balance | Manganese (Mn) | ≤ 1.00% |
| Chromium (Cr) | 14.00–15.50% | Silicon (Si) | ≤ 1.00% |
| Nickel (Ni) | 3.50–5.50% | Molybdenum (Mo) | ≤ 0.50% |
| Copper (Cu) | 2.50–4.50% | Carbon (C) | ≤ 0.070% |
| Niobium (Nb) | 5×C–0.45% | Nitrogen (N) | ≤ 0.10% |
| Oxygen (O) | ≤ 0.030% | Phosphorus (P) | ≤ 0.030% |
| Sulfur (S) | ≤ 0.015% |
Heat treatment & processing
- Age-hardenable in a single, low-temperature step — choose the aging condition (e.g. H900 and up) to dial in strength vs. toughness.
- Typical route: solution anneal, then age per the target condition.
- Good fabricating characteristics; reduced ferrite gives cleaner, more uniform mechanical properties than standard 17-4.
Key performance benefits
- Good strength, toughness, hardness and ductility
- Excellent response to precipitation (age) hardening
- Good corrosion resistance, stable up to 600°F (316°C)
- Cleaner transverse properties than standard 17-4 (lower ferrite)
- Well suited for functional parts, tooling and prototyping
Typical applications
- Surgical instruments and tools
- Valves and fittings
- Pumps and impellers
- Manifolds
- Industrial and chemical-processing equipment
Parts printed in 15-5PH
Material comparison: 15-5PH vs 17-4PH vs 316L
| Feature | 15-5PH | 17-4PH | 316L |
|---|---|---|---|
| Stainless steel type | Martensitic, precipitation-hardening | Martensitic, precipitation-hardening | Austenitic |
| AM process | LPBF | LPBF | LPBF / EBM / DED |
| Strength & hardness | High | High | Moderate |
| Toughness / transverse props | Higher (low ferrite) | Good | Very good |
| Corrosion resistance | Good | Good | Excellent |
| Heat treatable | Yes (single-step aging) | Yes (aging) | No (solution anneal only) |
| Magnetic | Yes | Yes | No |
| Max operating temp | Up to 600°F (316°C) | Up to 600°F (316°C) | Lower, application-dependent |
| Typical use case | High-strength parts needing clean properties | Strong structural parts, tooling | Corrosion-critical, medical |
| Brand | Carpenter Additive |
| Technology | Metal LPBF |
| Powder Package | 10 kg bottle, 440 kg hopper, 840 kg hopper |
| PSD (particle size distribution) | 15–45 micrometres |
| Printing Materials | Metal Powders |
| Material | 15-5 PH |
| Country of origin | USA |
| Production Method | Nitrogen Gas Atomized |
Full documentation — TDS, SDS, batch COA, and parameter sets for the major LPBF platforms. Everything you need for qualification under AS9100 / ISO 13485 workflows.
Don't see your spec?
We atomize our own. Custom variants on request.
Tighter PSD, modified chemistry, custom blend? Our ATO atomization lab runs custom batches in 3–4 weeks. Biocompatible, refractory, proprietary — all in-house, verified before ship.
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High strength. Heat-treatable. Production-ready. Genuine Carpenter PowderRange® 17-4PH precipitation-hardening stainless steel for LPBF metal 3D printing.
- ✓ Vacuum-melted, nitrogen gas-atomized — full COA on every lot
- ✓ Sold in small, workable volumes — no large mill minimums
- ✓ Fast dispatch from Los Angeles
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From process engineers running 15-5 Stainless Steel Powder for Metal 3D Printing | LPBF Compatible – 10 kg / 22 lbs
Unedited feedback from customers who reorder 15-5 Stainless Steel Powder for Metal 3D Printing | LPBF Compatible – 10 kg / 22 lbs.
★★★★★
Same lot 4 times in a row. We stopped re-running parameter sweeps after the second order — density was identical to the first build.
MK
Marcus K.
Process Engineer · Aerospace OEM
★★★★★
Asked about ferrite content on a Friday. A materials engineer answered Monday morning with actual data, not a sales pitch. That's why we keep ordering.
PS
Priya S.
R&D Lead · Medical Devices
★★★★★
COA matches the bottle. PSD and flow are exactly what was on the sheet — we run it on a Renishaw 500Q and it hits density on the first try.
DR
Diego R.
Production Lead · Energy
Common questions
Don't see yours? Email [email protected] — NDA standard, typical reply within 4 hours.
What is 15-5 stainless steel powder?
15-5 is a martensitic precipitation/age-hardening stainless steel powder commonly used in metal additive manufacturing. It offers high strength, excellent corrosion resistance, and the ability to be age-hardened for specific mechanical properties.
Which additive manufacturing processes are compatible with 15-5 powder?
PowderRange® 15-5 is compatible with Laser Powder Bed Fusion (LPBF).
Can 15-5 stainless steel be heat treated?
Yes. PowderRange® 15-5 can be age-hardened using a single-step, low-temperature treatment to achieve specific combinations of strength and toughness.
Is 15-5 stainless steel magnetic?
Yes, being a martensitic alloy, 15-5 stainless steel is magnetic.
What industries commonly use 15-5 stainless steel powder?
It is widely used in aerospace, food processing, petrochemical, and medical industries.
What types of parts are typically produced using 15-5 powder?
Common applications include surgical instruments, valves, pumps, manifolds, and industrial/chemical processing equipment.
Is 15-5 stainless steel easy to weld and post-process?
Yes. 15-5 stainless steel supports machining, polishing, and standard surface finishing methods.
Why choose 15-5 over other stainless steels?
15-5 is selected for its high strength, hardness, and corrosion resistance, as well as its ability to be age-hardened for tailored mechanical properties while remaining compatible with additive manufacturing.
Place your order, or talk to an engineer first
Order 15-5 Stainless Steel Powder for Metal 3D Printing | LPBF Compatible – 10 kg / 22 lbs direct, or talk to materials engineer