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Materials, Iron Base, LPBF (DMLS) 3D Printing Materials, Metal Powders 3D Printing Materials · Metal LPBF
A-Powder 17-4PH Stainless Steel Alloy Powder for Metal 3D Printing | LPBF Compatible – 10 kg / 22 lbs
High-strength. Heat-treatable. Corrosion-resistant. Genuine AO Metal 17-4PH precipitation-hardening stainless steel for LPBF metal 3D printing.
- ✓ Gas-atomized, low-oxygen — full COA per lot
- ✓ US-produced — workable volumes, no mill minimums
- ✓ Fast dispatch from Los Angeles
NDA standard
Ships in 1–2 business days
What your materials team actually checks
Lot-certified & heat-treatable
Every lot ships with a Certificate of Analysis — PSD, chemistry, apparent density and flow rate. 17-4PH reaches peak strength via H900–H1150 aging; we include post-print heat-treatment guidance for your target properties.
A materials engineer on the line
Qualification question? We've run these alloys in production on AO Metal — parameter sets available. Sub-4h reply, NDA standard. Use the Talk to materials engineer button above.
About this product
A-Powder 17-4PH is a gas-atomized precipitation-hardening martensitic stainless steel for laser powder bed fusion (LPBF): high strength and hardness with good corrosion resistance, heat-treatable to your target properties. US-produced, lot-certified for production.
Why engineers choose A-Powder 17-4PH
Four things a materials team verifies before qualifying a powder.
Heat-treatable to peak strength
Age-harden to H900–H1150 for UTS up to ~1300 MPa — dial in strength vs. toughness for your part, unlike austenitic stainless.
Lot-certified consistency
Full Certificate of Analysis with every lot — PSD, chemistry, apparent density and flow rate, traceable lot number for AS9100 and NADCAP workflows.
Gas-atomized, spherical
High sphericity and low oxygen for stable spreading and dense parts — repeatable flow, predictable LPBF performance.
US-produced, fast dispatch
Made in the USA and shipped from Los Angeles in 5–10 business days. Need a tighter cut or an official purchase request? Just ask.
How we supply it
Every lot ships as a verified process, not a bag of powder — melted, atomized, tested, certified.
Step 01
Melted & atomized
US gas atomization for spherical, low-oxygen 17-4PH powder with controlled Cu and Nb.
Step 02
Tested & certified
Every lot checked for PSD, chemistry, apparent density and flow — full COA with a traceable lot number.
Step 03
Dispatched from LA
Bottled or hoppered and shipped from Los Angeles in 5–10 business days.
Powder characteristics
| Property | Value |
|---|---|
| Alloy / grade | 17-4PH precipitation-hardening stainless (UNS S17400 · 1.4542 · AISI 630) |
| Particle size (PSD) | 15–53 µm — LPBF cut (custom cuts available) |
| Production method | Gas atomized (US-produced) |
| Morphology | Spherical, high sphericity, low oxygen |
| Condition | Heat-treatable — solution + age (H900–H1150) |
| Package | 10 kg bottle · 440 kg hopper · 840 kg hopper |
Chemical composition
| Element | Content | Element | Content |
|---|---|---|---|
| Iron (Fe) | Balance | Niobium (Nb+Ta) | 0.15–0.45% |
| Chromium (Cr) | 15.0–17.5% | Manganese (Mn) | ≤ 1.00% |
| Nickel (Ni) | 3.0–5.0% | Silicon (Si) | ≤ 1.00% |
| Copper (Cu) | 3.0–5.0% | Carbon (C) | ≤ 0.07% |
| Phosphorus (P) | ≤ 0.040% | Sulfur (S) | ≤ 0.030% |
Heat treatment & processing
- Precipitation-hardening — solution anneal (Condition A) then age at H900 (peak strength), H1025, H1075 or H1150 (higher toughness).
- H900 gives UTS up to ~1300 MPa; higher aging temperatures trade strength for ductility and toughness.
- Good corrosion resistance; magnetic (martensitic). Stress-relief before removal from the plate is recommended.
Typical applications
Where teams run high-strength 17-4PH printed parts.
Aerospace & defense
Brackets, fittings, structural parts
Tooling & mold inserts
Conformal-cooling inserts, dies
Pump & valve components
High-strength flow parts
Industrial & automotive
Load-bearing end-use parts
Material comparison: 17-4PH vs 316L vs 15-5PH
| Feature | 17-4PH | 316L | 15-5PH |
|---|---|---|---|
| Type | Martensitic PH | Austenitic (Mo) | Martensitic PH |
| Strength & hardness | High (heat-treatable) | Moderate | High (heat-treatable) |
| Corrosion resistance | Good | Excellent (chloride/pitting) | Good (δ-ferrite-free) |
| Heat treatable | Yes (aging) | No | Yes (aging) |
| Magnetic | Yes | No | Yes |
| Typical use | High-strength structural | Corrosion-critical, medical | Strength + transverse toughness |
Not sure 17-4PH is the right alloy for your part? Send your application, target strength and aging condition — a materials engineer who has run these alloys in production on AO Metal will help you qualify it. Sub-4h reply, NDA standard.
Why source through Additive Plus
- Own A-Powder line, US-produced — the same industrial AM-powder quality at an accessible, published price.
- Lot-certified — full COA per lot with PSD, chemistry, apparent density and flow.
- Heat-treatment guidance — H900–H1150 parameters for your target properties.
- US-based support — fast dispatch from Los Angeles; sub-24h engineer response.
| Brand | AO Metal – High-Precision Metal 3D Printers for Innovation |
| Technology | Metal LPBF |
| Powder Package | 10 kg bottle, 440 kg hopper, 840 kg hopper |
| PSD (particle size distribution) | 15–53 micrometres |
| Printing Materials | Metal Powders |
| Material | 17-4PH |
| Country of origin | USA |
| Production Method | Gas Atomization (GA) |
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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Request a custom quote — we manufacture precision build plates and building platforms for most industrial metal AM systems.
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- ✓ Full COA on every lot · fast dispatch from L.A.
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Corrosion-resistant. Biocompatible. Production-ready. Genuine AVIMETAL 316L austenitic stainless steel for LPBF metal 3D printing.
- ✓ Gas-atomized, low-oxygen — full COA on every lot
- ✓ Strong value alternative, sold in small workable volumes
- ✓ Fast dispatch from Los Angeles
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· 5-10 Business DaysFrom process engineers running A-Powder 17-4PH Stainless Steel Alloy Powder for Metal 3D Printing | LPBF Compatible – 10 kg / 22 lbs
Unedited feedback from customers who reorder A-Powder 17-4PH Stainless Steel Alloy 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 17-4PH Stainless Steel Alloy Powder?
A martensitic precipitation/age-hardening stainless steel powder for LPBF additive manufacturing, delivering ultra-high strength, corrosion resistance, and predictable mechanical properties for end-use components.
Which AM processes is it compatible with?
Optimized for LPBF (Laser Powder Bed Fusion), ensuring stable layer deposition, low spatter, and reproducible melt pool behavior.
Can the material be heat-treated?
Yes, heat treatment enables tailored mechanical properties, including ultimate tensile strength up to 1300 MPa, yield strength 1100 MPa, and hardness 43 HRC.
What is the corrosion resistance and operating environment?
Excellent corrosion resistance suitable for aerospace, defense, industrial, and automotive applications.
Which industries typically use 17-4PH?
Aerospace & Defense, Industrial Machinery, Automotive & Transportation, Energy & Power Generation.
Why choose this powder over other stainless steel powders?
Provides ultra-high strength, predictable LPBF printing, heat-treatable properties, and is backed by AO Metal’s consistent quality, small-batch flexibility, fast delivery, and full documentation.
Is A-Powder the same quality as name-brand metal powders?
Yes. A-Powder is our own brand of industrial AM powder - gas-atomized for high sphericity and low oxygen, with a full Certificate of Analysis (chemistry, particle-size distribution, apparent density and flow rate) on every lot. You get the performance you expect from a premium feedstock, at a more accessible, published price.
Can I order a smaller quantity or a custom particle size?
Yes. We sell in small, workable volumes with no large mill minimums, and we can supply custom particle-size cuts or quantities on request - just ask us for a quote.
Place your order, or talk to an engineer first
Order A-Powder 17-4PH Stainless Steel Alloy Powder for Metal 3D Printing | LPBF Compatible – 10 kg / 22 lbs direct, or talk to materials engineer