17-4PH Stainless Steel Powder
Stainless Steel Powders · Metal Additive Manufacturing Powder
17-4PH stainless steel powder is a precipitation-hardening martensitic grade that combines high strength (1,200+ MPa UTS after heat treatment) with good corrosion resistance. It is one of the most requested grades for metal AM tooling, aerospace brackets and marine components, because H900/H1025 ageing after printing can tune hardness from 33 to 44 HRC. In LPBF, as-built 17-4PH typically shows 1,200-1,250 MPa UTS and 15-17% elongation, and heat treatment lifts strength further while relieving residual stress. Gas-atomized powder in 15-45 µm and 15-53 µm cuts is the standard supply form; check the supplier's copper and niobium levels since 17-4PH relies on Cu-rich precipitates for hardening. When comparing suppliers, ask whether the powder chemistry is per ASTM A564 Type 630 / EN 1.4542 and whether they offer argon-atomized low-oxygen lots, which improve as-built density.
Typical Applications
17-4PH Stainless Steel Powder - Key Properties
| Chemical composition (wt%) | Fe bal · Cr 15-17.5 · Ni 3-5 · Cu 3-5 · Nb+Ta 0.15-0.45 · C ≤0.07 |
| Density | 7.75 g/cm³ (bulk) |
| Tensile strength (as-built) | 1,228 MPa UTS · 1,038 MPa YS (median of 8 data points) |
| Elongation (as-built) | 15% (median of 8 data points) |
| Hardness | ~39 HRC (H900 aged) · ~392 HV as-built |
| Particle size | 15-45 µm / 15-53 µm |
| Production | Gas atomization (VIGA) |
| Standards | ASTM A564 Type 630 · EN 1.4542 · UNS S17400 |
2 product offer(s) — 2 supplier(s)
Frequently Asked Questions
What is the price of 17-4PH powder?
17-4PH AM powder typically quotes in the $45-90 per kg range, above 316L due to its alloying content. Get current quotes from verified suppliers on this page — responses usually within 24 hours.
What heat treatment does 17-4PH need after printing?
Standard practice is solution annealing at 1,040°C followed by ageing (H900 at 482°C for peak strength, or H1025 at 552°C for a balanced strength/toughness). Always heat treat 17-4PH after LPBF to relieve residual stress.
Is 17-4PH good for tooling?
Yes — it is widely used for injection-mold inserts and conformal-cooled tooling because it hardens to 40+ HRC after ageing and machines well in the solution-annealed state.
Which particle size should I choose for 17-4PH?
15-45 µm for fine-detail LPBF parts, 15-53 µm as the general-purpose cut, 20-63 µm for EBM. Mention your machine model in the inquiry so suppliers recommend the right cut.
How do suppliers ensure 17-4PH powder quality?
Request a mill certificate with chemistry per ASTM A564 Type 630, particle-size distribution (laser diffraction), oxygen/nitrogen content and Hall flowability. Verified suppliers on PowderSight provide these on request.
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