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JIANGSU CHINA STEEL UNION INDUSTRIAL CO.,LTD.

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17-4PH Steel Bars Precision CNC Machining

January 13, 2026
Discover the superior performance of our Heat-Treated 17-4PH Stainless Steel Bars, engineered for demanding CNC machining applications. Achieve exceptional strength, corrosion resistance, and dimensional accuracy with our precision-machining grade bars, featuring an ultra-tight ±0.05mm tolerance.

Optimized through solution annealing and H1150 aging, these bars reach a hardness of 38–42 HRC, making them ideal for aerospace, medical, and automotive industries. The unique martensitic structure and precipitation hardening of 17-4PH offer outstanding fatigue resistance, crucial for high-stress components.

Benefit from reduced CNC cycle times and tool wear thanks to their precision machining readiness. Our bars minimize post-machining work, ensuring seamless integration into critical parts. With a smooth turned surface (Ra ≤1.6μm) and tensile strength of ≥1310 MPa, they outperform standard grades like 304/316, offering a high strength-to-weight ratio.

JIANGSU CHINA STEEL UNION INDUSTRIAL CO., LTD specializes in advanced stainless steel solutions. Our 17-4PH bars meet AMS 5643, ASTM A564, and ISO 4954 standards, guaranteeing material traceability and consistency for your mission-critical projects. Available in diameters from 5mm to 100mm, with custom services like grinding and cut-to-length.

Upgrade your manufacturing process with reliable, high-performance stainless steel. Contact us today to discuss your specific CNC machining needs and experience the JIANGSU CHINA STEEL UNION difference!
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