X2CrNiMo17133 Austenitic Stainless Steel Rod/Bar,for medical instruments

X2CrNiMo17133 Austenitic Stainless Steel Rod for medical instruments Product Information -:- For detailed product information, please contact sales. -: X2CrNiMo17133 Austenitic Stainless Steel Rod for medical instruments Synonyms -:- For detailed product information, please contact sales. -:

X2CrNiMo17133 Austenitic Stainless Steel for medical instruments Product Information -:- For detailed product information, please contact sales. -: # X2CrNiMo17-13-3 Stainless Steel for Medical Instruments ## Overview X2CrNiMo17-13-3 is a low-carbon, molybdenum-bearing austenitic stainless steel specifically designed for applications requiring enhanced corrosion resistance, excellent formability, and superior weldability. With its optimized chromium-nickel-molybdenum balance and reduced carbon content, this alloy offers improved resistance to intergranular corrosion compared to standard molybdenum-bearing grades, making it particularly suitable for medical instruments and equipment exposed to aggressive sterilization environments and bodily fluids. ## International Standards - **EN 10088-3:** 1.4432 (Standard European designation) - **ISO 7153-1:** Surgical instruments - Materials - Part 1: Metals - **ASTM A240/A240M:** 316L (U.S. equivalent, though composition differs slightly) - **ASTM F138/F139:** Standard Specification for Wrought 18Chromium-14Nickel-2.5Molybdenum Stainless Steel for Surgical Implants (similar grade) - **UNS S31603:** Unified Numbering System (similar grade) - **ISO 5832-1:** Implants for surgery - Metallic materials - Part 1: Wrought stainless steel ## Chemical Composition (Typical, % by weight) | Element | Content (%) | |---------|-------------| | **Carbon (C)** | ≤ 0.030 | | **Chromium (Cr)** | 16.5–18.5 | | **Nickel (Ni)** | 10.5–13.5 | | **Molybdenum (Mo)** | 2.5–3.0 | | **Manganese (Mn)** | ≤ 2.00 | | **Silicon (Si)** | ≤ 1.00 | | **Phosphorus (P)** | ≤ 0.045 | | **Sulfur (S)** | ≤ 0.030 | | **Nitrogen (N)** | ≤ 0.11 | | **Iron (Fe)** | Balance | ## Physical Properties (Annealed Condition) | Property | Value | |----------|-------| | **Density** | 8.00 g/cm³ | | **Melting Point** | 1390–1440 °C | | **Thermal Conductivity** | 15.0 W/m·K (at 20°C) | | **Specific Heat Capacity** | 500 J/kg·K | | **Electrical Resistivity** | 0.74 μΩ·m | | **Modulus of Elasticity** | 200 GPa | | **Magnetic Permeability** | <1.02 (practically non-magnetic) | | **Coefficient of Thermal Expansion** | 16.0 × 10⁻⁶/K (20–100°C) | ## Mechanical Properties (Annealed Condition) | Property | Value Range | |----------|-------------| | **Tensile Strength (Rm)** | 500–700 MPa | | **Yield Strength (Rp0.2)** | ≥ 220 MPa | | **Elongation at Break** | ≥ 40% | | **Hardness (Brinell)** | ≤ 215 HB | | **Hardness (Rockwell B)** | ≤ 95 HRB | | **Impact Toughness (Charpy V)** | >100 J | ## Heat Treatment - **Solution Annealing:** 1020–1100°C followed by rapid cooling (water quenching) - **Stress Relieving:** 400–500°C (for stress relief without significant strength reduction) - **Cannot be hardened by heat treatment** - strengthening occurs only through cold working ## Corrosion Resistance X2CrNiMo17-13-3 offers superior corrosion resistance in medical environments: ### **General Characteristics:** - Excellent resistance to atmospheric corrosion and fresh water - Superior resistance to body fluids, physiological saline, and organic acids - Good resistance to chloride-induced pitting and crevice corrosion (Pitting Resistance Equivalent Number ≈ 25-28) - Enhanced resistance to intergranular corrosion due to low carbon content ### **Sterilization Compatibility:** - **Autoclaving (steam sterilization):** Excellent resistance up to 134°C - **Dry heat sterilization:** Suitable up to 250°C - **Chemical sterilization:** Resistant to ethylene oxide, glutaraldehyde, and hydrogen peroxide plasma - **Radiation sterilization:** Compatible with gamma and electron beam irradiation ## Product Applications in Medical Field ### **Surgical Instruments:** - Microsurgical instruments requiring precision and corrosion resistance - Endoscopic and laparoscopic instruments - Orthopedic instruments (non-cutting) - Dental instruments and equipment - Biopsy forceps and collection devices ### **Medical Devices and Equipment:** - Sterilization tray systems and containers - Surgical table components and accessories - Implantable device components (bone screws, plates - when properly certified) - Diagnostic equipment components - Fluid handling systems in medical devices ### **Hospital Infrastructure:** - Surgical light components - Medical gas system components - Clean room equipment and fixtures ## Fabrication Characteristics ### **Machinability:** - Fair machinability (approximately 45% of free-machining steel) - Work hardens rapidly - requires sharp tools and adequate cooling - Recommended machining parameters: - Cutting speed: 15-25 m/min (turning) - Feed rate: 0.15-0.25 mm/rev - Use carbide or high-speed steel tools with positive rake angles ### **Forming and Welding:** - **Excellent cold formability** - suitable for deep drawing, bending, and stamping - **Superior weldability** by all common methods (TIG, MIG, plasma, resistance) - No preheating required for most thicknesses - Post-weld annealing not typically required due to low carbon content - Recommended filler metals: ER316L or ER317L for optimal corrosion resistance ### **Surface Finishing:** - Takes excellent polish - can achieve mirror finishes (Ra < 0.1 μm) - Electropolishing enhances corrosion resistance and cleanability - Passivation with nitric acid (20-40% solution) recommended after fabrication - Various surface textures available for specific medical applications ## Quality Assurance and Standards Compliance ### **Material Certification:** - EN 10204 3.1 certificate with full traceability - Chemical analysis certificate - Mechanical test certificate - Non-destructive testing reports (as required) - Special test certificates for medical applications ### **Medical-Specific Requirements:** - Controlled inclusion content (clean steel practice) - Restricted delta ferrite content (<5%) - Surface finish specifications per medical standards - Biocompatibility testing per ISO 10993 series - Sterilization validation requirements ## Advantages for Medical Applications ### **Technical Advantages:** 1. **Enhanced Corrosion Resistance:** Superior to standard 304/316 grades in chloride environments 2. **Excellent Weldability:** Maintains corrosion resistance in welded areas 3. **Good Mechanical Properties:** Adequate strength with excellent ductility 4. **Non-Magnetic:** Essential for MRI compatibility 5. **Biocompatibility:** Suitable for prolonged tissue contact when properly finished ### **Practical Benefits:** 1. **Extended Service Life:** Resists corrosion from repeated sterilization 2. **Reduced Maintenance:** Lower susceptibility to pitting and crevice corrosion 3. **Manufacturing Flexibility:** Easily formed and welded into complex shapes 4. **Hygienic Surface:** Smooth, non-porous surface prevents bacterial adhesion 5. **Proven Performance:** Established track record in medical applications ## Limitations and Considerations ### **Material Limitations:** - Lower yield strength compared to martensitic or precipitation-hardening grades - Not suitable for cutting edges requiring high hardness - Moderate galling resistance in sliding applications - Higher cost than standard austenitic grades (304, 304L) ### **Design Considerations:** - Account for work hardening during forming operations - Consider thermal expansion in assemblies with other materials - Specify appropriate surface finishes for intended use - Ensure proper passivation after manufacturing ## Comparison with Similar Medical Stainless Steels | Property | X2CrNiMo17-13-3 (1.4432) | X2CrNiMo17-12-2 (1.4404/316L) | X5CrNiMo17-12-2 (1.4401/316) | |----------|---------------------------|--------------------------------|-------------------------------| | **Mo Content** | 2.5-3.0% | 2.0-2.5% | 2.0-2.5% | | **C Content** | ≤0.030% | ≤0.030% | ≤0.07% | | **Corrosion Resistance** | Very Good | Good | Good | | **Weldability** | Excellent | Excellent | Very Good | | **Intergranular Corrosion** | Excellent | Excellent | Good | | **Medical Applications** | Broad | Standard | Limited | ## Regulatory and Compliance Aspects ### **Biocompatibility:** - Generally complies with ISO 10993-1 requirements for medical devices - Suitable for prolonged skin contact (Category B) - May require specific testing for implant applications ### **Industry Standards:** - ISO 13485: Quality management systems for medical devices - FDA 21 CFR Part 820: Quality System Regulation - EU Medical Device Regulation (MDR) 2017/745 ### **Documentation Requirements:** - Material certificates with traceability - Process validation records - Surface finish verification - Cleaning and passivation records - Sterilization validation data ## Conclusion X2CrNiMo17-13-3 represents an optimized austenitic stainless steel specifically engineered for demanding medical applications. Its balanced composition – featuring controlled low carbon content, enhanced molybdenum levels, and proper chromium-nickel ratios – provides an excellent combination of corrosion resistance, manufacturability, and mechanical properties. Particularly valuable for instruments and devices subjected to aggressive sterilization protocols and challenging service environments, this alloy offers reliable performance and extended service life. While requiring proper fabrication techniques and surface treatments, X2CrNiMo17-13-3 provides medical device manufacturers with a versatile material solution that meets stringent industry requirements for safety, reliability, and performance. Its established presence in European medical device manufacturing and growing recognition in global markets make it a preferred choice for applications where standard 316L may not provide sufficient corrosion resistance, yet super-austenitic or duplex grades would be economically unjustified. For medical instrument designers and manufacturers, X2CrNiMo17-13-3 offers a proven material solution that balances performance requirements with practical manufacturing considerations, making it a valuable addition to the materials palette for high-quality medical devices. -:- For detailed product information, please contact sales. -: X2CrNiMo17133 Austenitic Stainless Steel for medical instruments Specification Dimensions Size： Diameter 20-1000 mm Length <7412 mm Size:We can customized as required Standard： Per your request or drawing We can customized as required Properties（Theoretical） Chemical Composition -:- For detailed product information, please contact sales. -: X2CrNiMo17133 Austenitic Stainless Steel for medical instruments Properties -:- For detailed product information, please contact sales. -:

Applications of X2CrNiMo17133 Austenitic Stainless Steel Rod for medical instruments -:- For detailed product information, please contact sales. -: Chemical Identifiers X2CrNiMo17133 Austenitic Stainless Steel Rod for medical instruments -:- For detailed product information, please contact sales. -:

Packing of X2CrNiMo17133 Austenitic Stainless Steel Rod for medical instruments -:- For detailed product information, please contact sales. -: Standard Packing: -:- For detailed product information, please contact sales. -: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and Steel Rod drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 3883 gallon liquid totes Special package is available on request. E FORUs’ is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition