Stainless Steel 17-4 PH Bars and Rods are highly regarded for their remarkable strength, hardness, and resistance to corrosion, making them perfect for tough engineering and structural tasks. As a type of martensitic precipitation-hardening stainless steel, 17-4 PH boasts impressive mechanical properties whether it’s in its annealed or heat-treated state. These bars and rods deliver exceptional toughness, wear resistance, and dimensional stability, which are essential for high-precision machining and fabrication. Their ability to maintain strength even at elevated temperatures, along with their long-lasting resistance to stress corrosion cracking, makes them a go-to choice in industries like aerospace, marine, petrochemical, and high-performance manufacturing.
The composition of Stainless Steel 17-4 PH Bars and Rods includes chromium, nickel, and copper, which are crucial for achieving precipitation hardening through controlled heat treatment. Depending on their condition (H900–H1150), they can provide tensile strengths between 930 and 1310 MPa and yield strengths from 860 to 1100 MPa. This alloy is known for its excellent fatigue strength, decent ductility, and reliable corrosion resistance—often matching or surpassing many standard stainless steels. Its high hardness, stable microstructure, and ability to withstand both mechanical and thermal stress make it ideal for demanding load-bearing applications.
Dimension : EN, DIN, JIS, ASTM, BS, ASME, AISI
Grade : 17-4 PH (UNS No. S17400) Round Bars 1.4542
Finish : Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish
Form : Round, Square, Hex (A/F), Rectangle, Billet, Ingot, Forging Etc.
Surface : Hot Rolled Pickled or Sand Blasting Finished, Cold Drawn, Bright, Polished, Hairline
Application : Chemical process, Food processing, Petrochemical, Pollution control, Pulp and Paper, Refining
Condition : Cold Drawnd Pulished Cold Drawn Centreless Ground & Polished.
Our 17-4 PH Round Bars conforms to NACE MR0175/ISO 15156
| 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 |
| STANDARD | WERKSTOFF NR. | UNS |
| SS 17-4 PH | 1.4542 | S17400 |
Stainless Steel 17-4 PH Bars and Rods are known for their exceptional strength and corrosion resistance. The alloy undergoes a precipitation hardening process, which significantly enhances its tensile strength, yield strength, and fatigue resistance, making it ideal for demanding applications in aerospace, automotive, and other industries that require materials to withstand high-stress environments.
Yes, Stainless Steel 17-4 PH Bars and Rods can be heat treated to achieve various hardness levels and mechanical properties. The material is often solution annealed and then precipitation hardened to optimize strength, corrosion resistance, and toughness, depending on the specific requirements of the application.
You’ll find Stainless Steel 17-4 PH Bars and Rods widely used in aerospace components like fasteners, shafts, turbine parts, actuators, and structural fittings, thanks to their superior strength and fatigue performance. They’re also found in petrochemical equipment, marine hardware, pump shafts, high-pressure valves, and components for chemical processing. In manufacturing, these bars are essential for precision-machined parts, gears, couplings, and various heavy-duty engineering elements that require outstanding durability. Their long-term reliability, impressive strength-to-weight ratio, and resistance to harsh environments make 17-4 PH bars and rods a trusted choice in advanced industrial settings.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Hemi Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Hamilton New Zealand
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