About 17-4 PH Grades
We supply premium-grade 17-4 PH Stainless Steel Round Bars (UNS S17400 / Grade 630), widely recognized for its exceptional combination of high tensile strength, hardness, and superior corrosion resistance. This precipitation-hardening martensitic stainless steel is conditioned precisely to meet stringent industrial standards, making it the preferred choice for critical structural and high-load applications.
Our inventory features high-precision bars, including specialized heat-treated conditions such as H1150-D, ensuring excellent fracture toughness and resistance to stress corrosion cracking. With a strict adherence to close dimensional tolerances (e.g., -0/+0.10mm), these rods offer seamless machinability and flawless performance in demanding environments.
Technical Specifications
Material Grade: 17-4 PH / Grade 630 / UNS S17400
Standard Compliance: ASTM A564, ASME SA564, AMS 5643
Available Conditions: H900, H1025, H1150, H1150-M, H1150-D (Double Aged)
Size Range: 5mm to 300mm (Custom sizes, cuts, and specific lengths available on request)
Surface Finish: Bright Polished, Centerless Ground, Cold Drawn, Smooth Turned, Black
Tolerance: h9, h11, or specific close tolerances (e.g., -0/+0.10mm) as per drawing requirements.
Key Features & Material Advantages
High Tensile Strength: Superior yield strength compared to standard austenitic steels (like 304 or 316) after appropriate heat treatment.
Excellent Corrosion Resistance: Offers corrosion resistance comparable to SS304 in most environments, outperforming standard Hardenable chromium-grade steels.
Dimensional Stability: Minimal distortion during heat treatment and aging processes.
Strict Quality Control: Sourced from tier-1 manufacturers, ensuring heat numbers, batch numbers, and full material traceability with Mill Test Certificates (MTC) as per EN 10204 3.1.
Core Industrial Applications
Aerospace & Defence: Structural components, military hardware, and high-strength fasteners.
Oil & Gas / Petrochemicals: Valve shafts, pump impellers, gate valves, and offshore platform components.
Chemical & Food Processing: High-stress mixing equipment, shafts, and processing rings.
Marine Industry: Propeller shafts, coupling bolts, and underwater wear components.17-4 PH Stainless Steel Round Bars, UNS S17400 Round Rods, ASTM A564 Grade 630 Bars, 17-4 PH Bright Bars. 17-4 PH H1150-D Condition, Heat Treated 17-4 PH Rods, Precipitation Hardening Steel Bars.
Aerospace Grade 17-4 PH Bars, High Tensile Stainless Steel Rods, 17-4 PH Valve Shaft Quality (VSQ) Bars.