17-4PH Stainless Steel Powder
Stainless Steel Powders · Metal Additive Manufacturing Powder
17-4PH is a martensitic precipitation-hardening stainless steel that offers the best strength-to-cost ratio among printable stainless powders. Parts built from 17-4PH reach tensile strengths above 1300 MPa after H900 aging, roughly triple annealed 316L, while retaining useful corrosion resistance. That combination makes it the standard choice for conformally cooled injection molds, aerospace structural brackets, valve bodies and marine hardware. The powder prints reliably across LPBF, DED and MIM routes, and a single low-temperature age cycle at 480-620 C develops full hardness without solution annealing, so distortion stays minimal. Gas-atomized 15-45 micron lots are widely stocked by Chinese manufacturers, with custom screen cuts available on request. Because as-built microstructure contains retained austenite, final properties depend strongly on the chosen heat treatment - specify your required condition (H900, H1025 or H1150) when requesting quotes.
Typical Applications
17-4PH Stainless Steel Powder - Key Properties
| Density | 7.75 g/cm3 |
| Tensile strength | 950-1100 MPa as-built; 1310-1380 MPa after H900 aging |
| Yield strength | 1170-1250 MPa (H900) |
| Hardness | 32-36 HRC as-built; 40-47 HRC (H900) |
| Elongation | 5-10% (H900) |
| AM processes | LPBF (SLM/DMLS), DED, MIM |
| Equivalent grades | UNS S17400 / EN 1.4542 (X5CrNiCuNb16-4) / GB 0Cr17Ni4Cu4Nb |
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Frequently Asked Questions
What is the typical price of 17-4PH powder per kg?
Gas-atomized 15-45 micron 17-4PH from Chinese manufacturers typically runs 20-50 USD per kg depending on lot size, oxygen content and supplier verification; custom particle cuts add a premium. Submit a quote request on this page to compare live EXW prices.
What particle size do I need for LPBF printing?
15-45 micron or 15-53 micron is standard for laser powder bed fusion. DED processes use coarser 45-105 micron, and MIM uses sub-45 micron. Most suppliers offer custom screen cuts.
Do 17-4PH printed parts need heat treatment?
Yes. Parts are typically aged at 480 C (H900) for one hour to precipitate copper and reach full hardness. H1025 and H1150 conditions trade strength for better toughness and ductility.
Is 17-4PH powder suitable for injection molds?
Yes, it is one of the most-used grades for conformal-cooled injection molds because it hardens by low-temperature aging with minimal distortion, and its wear resistance suits high-cycle molding.
What are the international equivalent grades?
UNS S17400, EN 1.4542 (X5CrNiCuNb16-4) and Chinese GB 0Cr17Ni4Cu4Nb are the same alloy; supplier certificates usually list all three designations.
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