Free U.S. shipping on orders over $200 · Mutual NDA standard before any file review.
Talk to an engineer →
In stock
In every order
- Full lot COA — PSD, sphericity, flow rate, chemistry
- Qualified parameter sets for the major LPBF systems
- Mutual NDA before any file or spec review
- 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
17-4 AR Stainless Steel Powder for Metal 3D Printing | LPBF Compatible - 10 kg / 22 lbs
Wrought-equivalent strength. Heat-treatable. Predictable. Genuine Carpenter PowderRange® 17-4 AR precipitation-hardening stainless steel for LPBF metal 3D printing.
- ✓ Lower-nitrogen chemistry — full martensite, full 17-4 performance
- ✓ Sold in small, workable volumes — no large mill minimums
- ✓ Full COA on every lot · fast dispatch from L.A.
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® 17-4 AR is the wrought-equivalent grade of 17-4 precipitation-hardening stainless steel for laser powder bed fusion (LPBF). Its controlled, lower-nitrogen chemistry lets the alloy fully transform to martensite during standard heat treatment, delivering cast/wrought-equivalent strength and hardness — the grade to choose when you need full 17-4PH mechanical performance from additive manufacturing.
It keeps the high strength, hardness and corrosion resistance of 17-4 (up to 600°F / 316°C) and age-hardens in a single, low-temperature step.
Why teams buy this powder from Additive Plus
- Genuine Carpenter PowderRange® 17-4 AR — 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: ASTM A564
- Equivalents / alternate names: 17-4PH · UNS S17400 · 1.4542 · AISI 630 · LaserForm 17-4PH · GP1
- 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.)
17-4 AR vs standard 17-4PH
Standard 17-4 (PowderRange 17-4) runs higher in nitrogen, so it may not fully transform to martensite on heat treatment — giving slightly lower mechanical properties. 17-4 AR uses a lower-nitrogen chemistry that fully transforms, so heat-treated parts reach cast/wrought-equivalent properties. Choose AR when you need maximum, predictable strength; choose standard 17-4 when cost is the priority and PH-level properties are sufficient.
Chemical composition
Typical chemistry (wt%), per the Carpenter PowderRange® datasheet. Note the lower nitrogen vs standard 17-4PH:
| Element | Content | Element | Content |
|---|---|---|---|
| Iron (Fe) | Balance | Manganese (Mn) | ≤ 1.00% |
| Chromium (Cr) | 15.00–17.50% | Silicon (Si) | ≤ 1.00% |
| Copper (Cu) | 3.00–5.00% | Molybdenum (Mo) | ≤ 0.50% |
| Nickel (Ni) | 3.00–5.00% | Cobalt (Co) | ≤ 0.40% |
| Niobium + Tantalum | 0.15–0.45% | Carbon (C) | ≤ 0.07% |
| Nitrogen (N) | ≤ 0.030% | Aluminum (Al) | ≤ 0.05% |
| Oxygen (O) | ≤ 0.10% | Phosphorus (P) | ≤ 0.040% |
| Sulfur (S) | ≤ 0.030% |
Heat treatment & processing
- Age-hardenable in a single, low-temperature step (e.g. H900 and up) to tune strength vs. toughness.
- Fully transforms to martensite on standard solution anneal + age, reaching wrought-equivalent mechanicals.
- Good fabricating characteristics and machinability in solution-treated and aged conditions.
Key performance benefits
- Cast/wrought-equivalent strength and hardness after heat treatment
- Excellent response to precipitation (age) hardening
- Good corrosion resistance, stable up to 600°F (316°C)
- High strength, toughness, hardness and ductility
- Well suited for demanding functional parts and tooling
Typical applications
- Surgical instruments and tools
- Valves and fittings
- Pumps and impellers
- Manifolds
- Industrial and chemical-processing equipment
- Tooling
Parts printed in 17-4 AR
Material comparison: 17-4 AR vs 17-4PH vs 316L
| Feature | 17-4 AR | 17-4PH | 316L |
|---|---|---|---|
| Stainless steel type | Martensitic, precipitation-hardening | Martensitic, precipitation-hardening | Austenitic |
| Nitrogen / transformation | Lower N, full martensite | Higher N, partial | n/a |
| Heat-treated properties | Cast/wrought-equivalent | Slightly lower | n/a (no age hardening) |
| Strength & hardness | High | High | Moderate |
| Corrosion resistance | Good | Good | Excellent |
| Magnetic | Yes | Yes | No |
| Typical use case | Max, predictable strength | Cost-effective strong parts | 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 | 17-4AR |
| 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.
Frequently bought together
Complete the workflow
What teams add to an order so the first build runs clean — handling, plates, and a sample to qualify before you commit volume.
Composite Tooling
EOS M290 SS316 Build Plate | 50mm Corrosion-Resistant LPBF Platform
SS316 stainless steel build plate for EOS M280/M290 systems. 50mm optimized profile for corrosion-resistant and stable LPBF metal printing.
Need a build platform for a different printer model or custom dimensions?
Request a custom quote — we manufacture precision build plates for most metal AM systems.
Request a custom quote — we manufacture precision build plates for most metal AM systems.
From $720
Get quote
6-8 weeks
Additive Manufacturing Solutions
Delfin Industrial Vacuum Cleaner For 3D Printing & Powder Applications
Ideal for reactive metal powders (Al, Ti, etc.) used in AM or lab.
From $11391
Add to cart
Depowdering stations
S1 Post-processing system
The smart 2-in-1 solution for automated depowdering, cleaning and surface finishing of polymer and metal 3D-printed parts.
For Cleaning, Surface finishing
From $69920
Add to cart
Iron Base
17-4PH Stainless Steel Powder for Metal 3D Printing | LPBF Compatible - 10 kg / 22 lbs
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
For Metal LPBF
From $473
Get quote
2 Business Days
Other products teams run alongside 17-4 AR Stainless Steel Powder for Metal 3D Printing | LPBF Compatible - 10 kg / 22 lbs
Dental · LSPc, DLP, XiP
Nexa3D KeySplint Soft Resin 1kg For XiP
KeySplint Soft® device is indicated for the fabrication of orthodontic and dental appliances such as bite planes, mouthguards, nightguards, snoring appliances, splints, and repositioners.
Choose your color: Light Violet or Translucent.
From $474
Add to cart
In stock
Plastic Injection Molding Machine
Thermoplastic Elastomer (TPE) G7980 Black Pellets - 2 lbs
General-Purpose, FDA Compliant TPE for Soft-Touch Grips and Overmolding.
Price is for a 2-lb unit. Minimum order: 5 units (10 lbs total).
From $75
Add to cart
In stock
Engineering
CreatBot ABS Filament - 1kg
Classic ABS engineering filament with excellent impact strength and durability for functional prototypes, automotive, and industrial parts.
From $20
Add to cart
In stock
Plastic Injection Molding Machine
High density Polyethylene (HDPE) Natural Pellets - 2 lbs
A general-purpose high-density polyethylene resin designed for injection molding.
Price is for a 2-lb unit. Minimum order: 5 units (10 lbs total).
From $50
Add to cart
In stock
DLP 3D Printing Materials
Loctite 3D Cleaner T 18kg
High-temp (80°C) cleaner for industrial resins. Prevents peroxide formation. Essential for HDT280 FST materials.
From $326
Add to cart
In stock
LPBF (DMLS) 3D Printing Materials · Metal LPBF
IN625 Nickel Alloy Powder for Metal 3D Printing | LPBF Compatible - 10 kg / 22 lbs
High-temp. Corrosion-proof. Non-magnetic. Genuine Carpenter PowderRange® 625 (Inconel® 625) nickel superalloy for LPBF, EBM & DED metal 3D printing.
- ✓ Strength & corrosion resistance to 2000°F (1093°C)
- ✓ Sold in small, workable volumes — no large mill minimums
- ✓ Full COA on every lot · fast dispatch from L.A.
Prints IN625
From $1190
Get quote
In stock
· 2 Business Days
Ceramic 3D Printing Materials · CERAMIC SLA
Alumina 3D Printing Paste
OXIDE CERAMICS
Al2O3, basic material being useful in many applications for technical ceramics, good mechanical behavior in the high temperatures, the good thermal conductivity, the big electric resistivity, the great hardness, the good wear resistance, the chemical slowness.
In stock
Iron Base · Metal LPBF
A-Powder 17-4PH Stainless Steel Alloy Powder for Metal 3D Printing | LPBF Compatible – 10 kg / 22 lbs
Additive Plus A-Powder — industrial 17-4PH stainless for LPBF at an accessible price.
- ✓ Gas-atomized, low-oxygen — full COA on every lot
- ✓ Small, workable volumes — no mill minimums
- ✓ Fast dispatch from Los Angeles
Prints 17-4PH
From $510
Get quote
In stock
· 5-10 Business DaysFrom process engineers running 17-4 AR Stainless Steel Powder for Metal 3D Printing | LPBF Compatible - 10 kg / 22 lbs
Unedited feedback from customers who reorder 17-4 AR 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 PowderRange® 17-4 AR stainless steel powder?
PowderRange® 17-4 AR is a martensitic precipitation-hardening stainless steel powder designed for metal additive manufacturing using LPBF. It offers high strength, hardness, good ductility, and corrosion resistance up to 600°F (316°C).
How is 17-4 AR different from standard 17-4PH?
17-4 AR is supplied in a condition optimized for additive manufacturing stability and repeatability. It provides similar chemistry and performance to 17-4PH but is positioned for applications requiring consistent printability, functional tooling, and rapid prototyping with predictable post-processing.
Can 17-4 AR be heat treated after printing?
Yes. 17-4 AR can be age-hardened using a simple, single-step low-temperature heat treatment, allowing users to tailor strength and toughness for specific applications.
What additive manufacturing process is supported?
PowderRange® 17-4 AR is optimized for Laser Powder Bed Fusion (LPBF) systems.
What are the typical applications of 17-4 AR?
Typical applications include tooling, valves and fittings, pumps and impellers, manifolds, surgical instruments, and industrial or chemical processing components.
Is 17-4 AR suitable for corrosive environments?
Yes. 17-4 AR offers good corrosion resistance, making it suitable for aerospace, food processing, petrochemical, and medical environments.
Is 17-4 AR suitable for production or prototyping?
Both. It is widely used for functional end-use parts, rapid tooling, and prototyping due to its strong mechanical performance and simple heat treatment.
Place your order, or talk to an engineer first
Order 17-4 AR Stainless Steel Powder for Metal 3D Printing | LPBF Compatible - 10 kg / 22 lbs direct, or talk to materials engineer