Stainless Steel 17-4 PH Bars are premium precipitation-hardened stainless steel bars known for combining high strength, corrosion resistance, and good mechanical properties. Offered by Andre Stainless in Pulau Ujong, Singapore, these bars are widely used in critical engineering applications requiring strength, toughness, and resistance to both atmospheric and chemical corrosion. The material excels in high stress and fatigue environments, suitable for aerospace, marine, and power generation applications. Available in different conditions (e.g., H900, H1025), 17-4 PH bars can be readily machined, heat treated, and maintained dimensional stability. Compliant to ASTM A564 specifications.
17-4 PH stainless has ~15–17.5% chromium, ~3–5% nickel, ~3–5% copper, ≤0.07% carbon, ~0.15–0.45% niobium, and traces of manganese and silicon. In the H900 condition, it has a tensile strength as high as 1,310 MPa, yield strength of approximately 1,170 MPa, elongation of approximately 10%, and hardness of approximately 38–44 HRC. It has high mechanical strength combined with relatively moderate toughness. The alloy is not magnetic in the annealed condition and becomes magnetic following heat treatment. It has good resistance to pitting, oxidation, and stress corrosion cracking in moderately corrosive conditions.
| Grade | C | P | Si | Ni | Cu | Fe | Mn | S | Cr | Cb+Ta |
| SS 17-4 PH | 0.07 | 0.04 | 1.0 max | 3.0 – 5.0 | 3.0 – 5.0 | Bal | 1.0 max | 0.03 | 15.0 – 17.5 | 5 X C / 0.45 |
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At Andre Stainless, all stainless steel 17-4 PH panels have been rigorously tested and quality assured to meet international standards. Our products are certified for durability, tensile strength and corrosion resistance, backed by material test certificates (MTC) and third-party inspections. Trust in our commitment to providing reliable and quality stainless steel solutions.
17-4 PH round bars offer high strength and excellent corrosion resistance, ideal for aerospace, marine, and industrial applications, providing durability and reliability in demanding environments.
17-4 PH flat bars deliver superior strength and corrosion resistance, suitable for structural components, aerospace parts, and industrial equipment, ensuring long-lasting performance under high stress and corrosive conditions.
17-4 PH square bars provide exceptional strength and fatigue resistance, perfect for use in aerospace and industrial applications where high performance and durability are required.
17-4 PH rectangular bars are used in high-stress applications, offering excellent strength and corrosion resistance, ideal for aerospace, chemical processing, and industrial components.
17-4 PH hexagonal bars offer high strength and resistance to corrosion, suitable for making aerospace parts, mechanical components, and industrial fittings, ensuring durability in challenging environments.
17-4 PH T-bars provide exceptional performance in aerospace and industrial applications, delivering high strength and corrosion resistance, ideal for structural support and critical components.
Stainless Steel 17-4 PH Bars have extensive applications in aerospace structural parts, landing gear, turbine blades, and fasteners because of their high fatigue life and resistance to corrosion. In petrochemical and oil & gas industries, they are utilized in pump components and valve shafts, as well as pressure vessel hardware. The dimensional stability of the material when hardening is suitable for precision-machined components, including motor parts, propeller shafts, and instrumentation housings, as well as surgical instruments and instrumentation housing. In marine applications, 17-4 PH bar is utilized in structural assemblies exposed to salt atmospheres and motor parts. Its great mechanical properties also render it appropriate for usage in nuclear, automobile, and defense industries.
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