17-4 stainless steel is a versatile and robust material suitable for applications requiring a combination of high strength, corrosion resistance, and ease of heat treatment. Its precipitation-hardening capability makes it particularly valuable in industries where durable and high-performance materials are essential.

Typical Chemistry: 

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• Chromium (Cr): 15.0-17.5%

• Nickel (Ni): 3.0-5.0%

• Copper (Cu): 3.0-5.0%

• Manganese (Mn): 1.0% max

• Silicon (Si): 1.0% max

• Columbium/Tantalum (Cb/Ta): 0.15-0.45%

• Phosphorus (P): 0.04% max

• Sulfur (S): 0.03% max

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The alloy's unique feature is its precipitation hardening capability, achieved through heat treatment, which imparts a combination of high strength and good corrosion resistance.

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Use in the Medical Industry:

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Orthopedic Implants: The high strength of 17-4 stainless steel makes it suitable for manufacturing orthopedic implants such as bone plates, screws, and hip components. These implants require materials that can withstand the mechanical stresses and loading conditions experienced in the human body.​

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Surgical Instruments: Certain surgical instruments, including those used in orthopedic and dental procedures, are made from 17-4 stainless steel. The alloy's strength and corrosion resistance are essential for instruments that need to endure repeated sterilization cycles and maintain their structural integrity during surgical procedures.

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Dental Devices: 17-4 is commonly used in the dental industry for the production of dental implants, crowns, and other components. The material's strength and resistance to corrosion in the oral environment make it suitable for dental applications.

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Medical Tools and Equipment: Various medical tools and equipment, such as surgical scissors, forceps, and other handheld instruments, benefit from the strength and durability of 17-4 stainless steel. These tools often undergo frequent sterilization processes, and the alloy's corrosion resistance is crucial for maintaining their functionality over time.

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Prosthetics: In the field of prosthetics, 17-4 stainless steel may be used to manufacture certain components due to its high strength and biocompatibility. Prosthetic limbs and related devices require materials that can withstand mechanical stresses and provide long-term durability.

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Instrumentation and Devices: 17-4 is employed in the fabrication of various medical devices, including components for diagnostic equipment, imaging devices, and other medical instrumentation. The alloy's mechanical properties make it suitable for applications where both strength and corrosion resistance are important.

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Fasteners and Connectors: In medical equipment assembly, fasteners and connectors made from 17-4 stainless steel can provide the necessary strength and corrosion resistance, ensuring the reliability and longevity of medical devices.