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ISO 5832-9 Stainless Steel Bar ISO 5832-9 Stainless Steel Bar ISO 5832-9 Stainless Steel Bar ISO 5832-9 Stainless Steel Bar ISO 5832-9 Stainless Steel Bar

ISO 5832-9 Stainless Steel Bar

4500.0 INR/Kilograms
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Product Details:

  • Technique Hot Rolled / Cold Drawn
  • Type Bar
  • Application Orthopedic implants, surgical instruments, medical devices
  • Finish Bright / Polished
  • Grade ISO 5832-9 / ASTM F136 / UNS R56400
  • Standard ISO 5832-9
  • Tolerance H9 / h9 or as specified
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ISO 5832-9 Stainless Steel Bar Price And Quantity

  • 4500.0 INR/Kilograms
  • 1 Kilograms

ISO 5832-9 Stainless Steel Bar Product Specifications

  • Implant applications, biomedical use
  • Precision ground and straightened
  • Custom; as per requirement, max up to 6 meters
  • Hot Rolled / Cold Drawn
  • Bar
  • Bright / Polished
  • Orthopedic implants, surgical instruments, medical devices
  • H9 / h9 or as specified
  • ISO 5832-9
  • ISO 5832-9 / ASTM F136 / UNS R56400
  • 4 mm to 100 mm
  • Stainless Steel
  • Non-magnetic
  • 10%
  • 220 HB max (approximate, depends on delivery)
  • Annealed, Cold Drawn, Polished Bar
  • 795 MPa (at room temperature)
  • Excellent in biological environments
  • Round, Hex, Square, Custom
  • Approx. 4.43 g/cm3
  • Smooth, Free from scale and cracks
  • Standard export sea-worthy packing
  • 860 MPa

Product Description

ISO 5832-9 defines the international standard for wrought high-nitrogen, high-purity austenitic stainless steel used in surgical implants, medical instruments, and critical non-magnetic hardware. Standardized globally under UNS S31675, ASTM F1586, and European designation DIN Werkstoff Nr. 1.4472 (X4CrNiMoN21-9-4 or X2CrNiMoN21-16-5-4), this material is commercially produced under trade names including Rex 734, UGIPURE 4472, and Chronifer M-1586. Manufactured via vacuum-arc remelting or electroslag remelting processes, ISO 5832-9 steel relies on a controlled solid-solution nitrogen addition to deliver superior yield strength, fatigue endurance, and pitting corrosion resistance compared to standard implant grade 316L stainless steel.

Standards and Designations

Primary governing specifications include ISO 5832-9 for surgical implants, ASTM F1586 for wrought nitrogen-strengthened stainless steel, UNS S31675, and European standard DIN Werkstoff Nr. 1.4472.

Chemical Composition Limits

The alloy composition mandates 19.50 to 22.00 percent chromium, 9.00 to 11.00 percent nickel, 2.00 to 4.25 percent manganese, 2.00 to 3.00 percent molybdenum, 0.25 to 0.50 percent nitrogen, and 0.25 to 0.80 percent niobium. Maximum impurity limits require no more than 0.030 percent carbon, 0.75 percent silicon, 0.025 percent phosphorus, 0.010 percent sulfur, and 0.25 percent copper, with iron providing the balance.

Physical Properties

ISO 5832-9 material exhibits a density of 7.88 grams per cubic centimeter (0.285 pounds per cubic inch) and a tension modulus of elasticity of 200 gigapascals. Its calculated Pitting Resistance Equivalent Number ranges between 33.0 and 38.0. Due to its nitrogen-stabilized austenitic structure, the alloy maintains a magnetic permeability below 1.005, remaining non-magnetic even after heavy cold deformation or forging.

Mechanical Properties

Mechanical requirements vary depending on product form, cross-sectional thickness, and thermal processing condition across round bar, rod, and ring stock.

In the solution-annealed state, bars and forgings specify a minimum tensile strength of 740 megapascals (107 ksi), a minimum 0.2 percent yield strength of 430 megapascals (62 ksi), a minimum elongation of 35 percent, and a hardness between 200 and 250 Brinell.

In the cold-worked or high-strength forged condition, minimum tensile strength increases to 1000 megapascals (145 ksi), minimum 0.2 percent yield strength increases to 750 megapascals (109 ksi), minimum elongation is 10 to 15 percent, and hardness reaches 30 to 38 Rockwell C.



Exceptional Performance in Biomedical Applications

ISO 5832-9 Stainless Steel Bars are tailored for medical use due to their strength, corrosion resistance, and biocompatibility. Their consistent quality and non-magnetic characteristics make them ideal for critical medical devices and implants, ensuring patient safety and durability in clinical environments. With customized sizing and superior mechanical properties, these bars support innovation in surgical solutions and advanced healthcare technology.


Precision Processing and Versatile Shapes

Choose from a variety of shapes-including round, hex, and square-as well as custom geometries to match specific project requirements. The bars are annealed, cold drawn, and polished for a smooth, bright finish, free from scale and cracks. Their precision-ground and straightened surfaces, combined with tight tolerances (H9/h9), guarantee reliable integration into complex biomedical assemblies.

FAQ's of ISO 5832-9 Stainless Steel Bar:


Q: How are ISO 5832-9 Stainless Steel Bars typically used in the medical field?

A: These bars are primarily utilized in the fabrication of orthopedic implants, surgical tools, and other medical devices that demand superior strength, corrosion resistance, and biocompatibility. Their mechanical stability and non-magnetic nature are essential for patient safety and effective clinical applications.

Q: What processing steps ensure the quality and finish of ISO 5832-9 bars?

A: The bars undergo hot rolling or cold drawing, followed by precision grinding and straightening. They are then polished to a bright finish and thoroughly inspected to ensure a smooth surface, free from scale and cracks, which is critical for biomedical use.

Q: When should I specify a custom shape or size for these stainless steel bars?

A: Custom shapes and sizes are ideal when standard dimensions do not fit your specific device design or application. You can request tailored lengths (up to 6 meters), diameters (4-100 mm), and unique cross-sections to meet precise engineering or surgical requirements.

Q: Where can ISO 5832-9 Stainless Steel Bars be sourced or exported from?

A: These bars are widely available from Indian dealers, exporters, fabricators, manufacturers, suppliers, and traders, with a robust export infrastructure ensuring safe delivery worldwide via standard sea-worthy packaging.

Q: What are the main benefits of choosing ISO 5832-9 grade for implant applications?

A: This stainless steel grade offers excellent corrosion resistance in biological environments, alongside high yield and tensile strengths. Its non-magnetic property and reliable biocompatibility minimize adverse patient reactions and maximize device longevity.

Q: What is the typical hardness and why is it important in biomedical use?

A: The typical hardness is up to 220 HB, though this can depend on delivery status. This level ensures the bars are neither too brittle nor too soft, providing balanced durability and machinability for intricate medical components.

Q: How does the packaging process protect the quality of the stainless steel bars?

A: Standard export sea-worthy packaging safeguards the bars from moisture, physical damage, and contamination during transit, preserving their polished surface and critical properties until they reach the end user.

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