X20Cr13 Stainless Steel Flange,for medical instruments

1,We Manufacturing processes are primarily classified into four types: 1:Forging, 2:Casting, 3:Cutting, 4:Rolling. 2,We can manufacture in accordance with these standards. Standards: GB Series (Chinese Standards), JB Series (Machinery Standards), HG Series (Chemical Industry Standards), ASME B16.5 (American Standards), BS4504 (British Standards), DIN (German Standards), and JIS (Japanese Standards). Internationally, there are two primary systems of pipe flange standards: the European system, represented by the German DIN standards (including those of the former Soviet Union), and the American system, represented by the US ANSI pipe flange standards. Other common standards include: the Chinese Ministry of Machinery Industry standards (JB series), the Ministry of Chemical Industry standards (HG series), the Chinese National Standard *GB/T 9112–9124-2010 Steel Pipe Flanges*, as well as US standards (ASME B16.5), British standards (BS4504), German standards (DIN), Japanese standards (JIS), and marine standards (CBM), among others. The nominal pressure ratings for the PN series are designated by "PN" and comprise the following nine levels: PN2.5, PN6, PN10, PN16, PN25, PN40, PN63, PN100, and PN160. The nominal pressure ratings for the Class series are designated by "Class" and comprise the following six levels: Class150, Class300, Class600, Class900, Class1500, and Class2500. Flange Classification 1. **According to Chemical Industry Standards:** Flanges are classified as follows: Plate Flat Welding Flange (PL), Necked Flat Welding Flange (SO), Necked Butt Welding Flange (WN), Integral Flange (IF), Socket Welding Flange (SW), Threaded Flange (Th), Butt Welding Ring Loose Flange (PJ/SE), Blind Flange (BL), Flat Welding Ring Loose Flange (PJ/PJ), and Lined Blind Flange (BL(s)). 2. **According to Petrochemical (SH) Industry Standards:** Flanges are classified as follows: Threaded Flange (PL), Butt Welding Flange (WN), Flat Welding Flange (SO), Socket Welding Flange (SW), Loose Flange (LJ), and Blind Flange (no specific designation). 3. **According to Machinery (JB) Industry Standards:** Flanges are classified as follows: Integral Flange, Butt Welding Flange, Plate Flat Welding Flange, Butt Welding Ring Plate Loose Flange, Flat Welding Ring Plate Loose Flange, Lap Joint Ring Plate Loose Flange, and Blind Flange. 4. **According to Connection Method/Type:** Flanges are classified as follows: Plate Flat Welding Flange, Necked Flat Welding Flange, Necked Butt Welding Flange, Socket Welding Flange, Threaded Flange, Blind Flange, Necked Butt Welding Ring Loose Flange, Flat Welding Ring Loose Flange, Ring-Type Joint (RTJ) Flange and Blind Flange, Large-Diameter Plate Flange, Large-Diameter High-Neck Flange, Figure-8 Blind Plate, Butt Welding Ring Loose Flange, etc. 5. **According to the Component Being Connected:** Flanges can be classified into Vessel Flanges and Pipe Flanges. 6. **According to Structural Type:** Flanges include Integral Flanges, Threaded Flanges, Flat Welding Flanges, Butt Welding Flanges, Lap Joint (Loose/Swivel) Flanges, and Blind Flanges. A flange—also referred to as a flange plate or rim—is a component used to connect shafts to one another, or, more commonly, to join the ends of pipes. Flanges are also utilized at the inlet and outlet ports of equipment to facilitate connections between two devices—for instance, the flange on a speed reducer. A "flange connection" or "flanged joint" refers to a detachable joint assembly comprising three interconnected elements—a flange, a gasket, and bolts—that together form a sealed structural unit. In the context of piping systems, a "pipe flange" specifically denotes a flange used for plumbing within the installation; when applied to equipment, it refers to the inlet or outlet flange of that specific device. Flanges feature a series of holes through which bolts are inserted to securely fasten the two flanges together, while a gasket placed between the flanges ensures a leak-proof seal. Flanges are broadly categorized into three types: threaded (screw-in) flanges, welded flanges, and clamp-type flanges. Flanges are invariably used in pairs; threaded flanges are suitable for low-pressure piping applications, whereas welded flanges are required for systems operating at pressures exceeding 4 kilograms per square centimeter. A sealing gasket is inserted between the two flange plates, which are then firmly secured using bolts. The thickness of a flange—as well as the specifications of the bolts used to fasten it—vary depending on the specific pressure rating required for the application. When connecting equipment such as water pumps or valves to piping systems, the corresponding connection points on these devices are often manufactured in the shape of a matching flange; this method of attachment is also referred to as a "flange connection." Generally, any connecting component that utilizes bolts to join and seal the perimeters of two flat surfaces—such as the joints in ventilation ducts—is termed a "flange"; such components may collectively be classified as "flange-type parts." However, since such a connection often constitutes merely a *portion* of a larger device—for instance, the interface between a flange and a water pump—it would be inappropriate to classify the entire water pump itself as a "flange-type part." Conversely, smaller components—such as valves—that feature such flanged interfaces may indeed be appropriately categorized as "flange-type parts." -:- For detailed product information, please contact sales. -: X20Cr13 Stainless Steel Flange for medical instruments Product Information -:- For detailed product information, please contact sales. -: X20Cr13 Stainless Steel Flange for medical instruments Synonyms -:- For detailed product information, please contact sales. -:

X20Cr13 Stainless Steel for medical instruments Product Information -:- For detailed product information, please contact sales. -: ### **Product Name:** X20Cr13 Stainless Steel for Medical Instruments **Classification:** High-Carbon Martensitic Stainless Steel (Premium Edge-Retention Grade) --- ### **1. Overview** X20Cr13 is a **high-carbon martensitic stainless steel** representing the upper tier of the standard chromium-based instrument steels, specifically engineered for medical and surgical instruments that demand **exceptional edge sharpness, superior edge retention, and high wear resistance**. With its carbon content at the higher end of the 13% chromium martensitic family, it is designed to achieve and sustain a very high hardness level after appropriate heat treatment. This grade is a classic choice for high-performance cutting and dissecting instruments where maintaining a sharp working edge through multiple sterilization cycles is critical. It offers a balance of corrosion resistance suitable for medical environments and the mechanical properties required for precision tools. ### **2. Chemical Composition (Weight %, according to EN 10088-3)** Composition is tightly controlled to optimize hardenability, carbide formation, and final polishability. | Element | Minimum (%) | Maximum (%) | Notes | |---------|------------|------------|-------| | **Carbon (C)** | 0.16 | 0.25 | **The defining characteristic.** This high carbon content is the primary driver for achieving high hardness (up to ~58 HRC) and excellent wear resistance through the formation of chromium carbides and high-carbon martensite. | | **Chromium (Cr)** | 12.0 | 14.0 | Provides the essential passive layer for corrosion resistance against sterilization processes and organic fluids. Not suitable for implant use. | | **Silicon (Si)** | ≤ 1.00 | | Deoxidizer. | | **Manganese (Mn)** | ≤ 1.00 | | Aids in deoxidation and hot workability. | | **Phosphorus (P)** | ≤ 0.040 | | Impurity, kept low. | | **Sulfur (S)** | ≤ 0.015 (typically ≤0.003 for med.) | | Impurity. Ultra-low levels are critical for medical grades to ensure superior polishability and minimize inclusions that could initiate corrosion. | | **Iron (Fe)** | Balance | | | **Key Feature:** The carbon range of 0.16-0.25% places it distinctly higher than X10Cr13 (0.08-0.15%) and X15Cr13 (~0.13-0.20%), enabling maximum hardness in the 13% Cr series. ### **3. Physical & Mechanical Properties** *Final properties are entirely governed by the heat treatment (hardening and tempering) process.* **Typical Heat Treatment:** * **Annealed Condition:** ~ 220 HB (supplied state for machining) * **Hardening:** Austenitize at **1020-1070°C**, followed by oil quenching. Precise temperature control is vital to dissolve carbides without causing excessive grain growth. * **Tempering:** Performed between **150-350°C** to set the final hardness, relieve stresses, and achieve the required balance of hardness and toughness. **Mechanical Properties (After Hardening & Tempering):** * **Tensile Strength (Rm):** 900 - 1200 MPa * **Yield Strength (Rp0.2):** 700 - 950 MPa * **Elongation (A):** 5% - 10% (Lower ductility than lower-carbon grades, as expected for high hardness) * **Hardness Range (typical after HT):** * **Maximum Hardness (As-Quenched):** Up to ~58 HRC. * **Surgical Blades, Micro-Scissors:** **52 - 58 HRC** (Optimal range for supreme sharpness and edge holding) * **Heavy-Duty Cutters, Bone Instruments:** 48 - 54 HRC (Tempered for added toughness) * **Modulus of Elasticity:** ~215 GPa **Physical Properties (Typical):** * **Density:** 7.7 g/cm³ * **Thermal Conductivity:** ~23 W/m·K * **Coefficient of Thermal Expansion:** 10.5 x 10⁻⁶ /K (20-100°C) * **Magnetic:** **Yes.** Strongly magnetic in all conditions due to its fully martensitic structure. ### **4. Key Characteristics** * **Superlative Edge Retention & Sharpness:** The high carbon and chromium content allows for a high volume of hard carbides within a very hard martensitic matrix, providing outstanding resistance to dulling. * **High Wear Resistance:** Excellent for instruments subject to abrasive wear, such as those contacting bone, cartilage, or calcified tissue. * **Good Corrosion Resistance (for intended use):** Adequate for repeated steam autoclaving (121-134°C), chemical disinfection, and exposure to blood and bodily fluids. **Not corrosion-resistant enough for implantable devices or prolonged saline immersion.** * **Excellent Polishability:** Capable of achieving a flawless, mirror-like surface finish, which is crucial for reducing tissue adhesion, facilitating cleaning, and meeting aesthetic standards for surgical tools. * **High Strength & Stiffness:** Provides the necessary rigidity for precise control in surgical procedures. * **Reduced Toughness:** The trade-off for high hardness and wear resistance is lower impact toughness and ductility compared to lower-carbon martensitic grades. Design and tempering must account for this to avoid brittle fracture. ### **5. Product Applications** X20Cr13 is specified for high-end, reusable surgical and dental instruments where cutting performance is the foremost priority: * **Premium Surgical Scalpels & Blades:** For procedures requiring the sharpest, most durable edge. * **Microsurgical Instruments:** Ophthalmic scissors, vascular scissors, and fine dissecting forceps. * **Orthopedic Cutting Tools:** Osteotomes, chisels, bone curettes. * **Dental Surgical Instruments:** Surgical elevators, extraction forceps, scalers. * **High-Quality Dissecting Scissors (Mayo, Metzenbaum).** * **Biopsy Punches and Dermal Curettes.** ### **6. International Standards & Specifications** | Region/System | Standard & Designation | Scope / Notes | |---------------|----------------------|---------------| | **European (EN)** | **EN ISO 7153-1** | Primary material standard for surgical instruments. Recognizes high-carbon martensitic steels; X20Cr13 falls within the specified chemical and property ranges for such grades. | | **European (EN)** | **EN 10088-3** | Technical delivery conditions. Often corresponds to steel grade **1.4021** (X20Cr13) or similar designations depending on the exact carbon range. | | **ISO** | **ISO 7153-1** | Identical to EN ISO 7153-1. | | **USA / ASTM** | **ASTM A582 (Type 420)** | **Type 420** with higher carbon content (often "Type 420HC") is the closest commercial equivalent. "HC" denotes High Carbon. | | **UNS** | **UNS S42000** | For Type 420 stainless steel. | | **Germany (DIN)** | **1.4021** (common for X20Cr13) | Widely recognized material number. | | **Common Names** | **"420HC"**, **"High-Carbon 420"**, **"Razor Blade Steel"** | | **Critical Note:** Medical instrument manufacturers almost always use **proprietary material specifications** that mandate stricter controls on chemistry (e.g., sulfur, phosphorus), inclusion content, grain size, and hardenability beyond standard mill grades to ensure consistent, high-performance results. ### **7. Available Forms & Processing** * **Standard Forms:** Round bar, flat bar, wire, strip – supplied in the **soft annealed and spheroidized** condition to facilitate machining. * **Fabrication Process Flow:** 1. **Machining/Forging/Stamping:** Conducted in the soft, annealed state. 2. **Hardening & Tempering:** Requires precise furnace control. Decarburization must be prevented (often using protective atmosphere or vacuum). Double tempering may be used to ensure transformation of retained austenite and stress relief. 3. **Finishing:** Involves precision grinding, multi-step mechanical polishing, electropolishing (for a passive, clean surface), passivation, and final micro-sharpening of the cutting edge. 4. **Cleaning, Sterilization Validation, Packaging.** ### **8. Selection Rationale** **Choose X20Cr13 when:** * The instrument is a **cutting tool** where **maximum edge sharpness and longevity** are the primary design criteria. * The application justifies the **trade-off of some toughness for superior wear resistance**. * Manufacturing has the expertise for the **critical heat treatment and finishing processes** required for high-carbon steel. **Consider more corrosion-resistant martensitic grades (e.g., X39CrMo17-1 / 1.4125) when:** * The instrument will be exposed to more corrosive environments. * A better overall combination of hardness, toughness, and corrosion resistance is needed. **Consider lower-carbon grades (X10Cr13, X15Cr13) when:** * Higher toughness or easier fabrication is more important than ultimate edge holding. * For instruments where high hardness is not the sole priority (e.g., some types of forceps, retractors). --- **Disclaimer:** This datasheet provides general technical information. The manufacture of medical instruments is highly regulated. All materials must demonstrate **biocompatibility** for their intended use per ISO 10993 or equivalent. The entire manufacturing process must be controlled under a Quality Management System (e.g., ISO 13485). Material must be sourced with full traceability and certifications compliant with **EN ISO 7153-1** or equivalent medical device material standards. Performance is critically dependent on precise, validated heat treatment and finishing processes. -:- For detailed product information, please contact sales. -: X20Cr13 Stainless Steel for medical instruments Specification Dimensions Size： Diameter 20-1000 mm Length <7404 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. -: X20Cr13 Stainless Steel for medical instruments Properties -:- For detailed product information, please contact sales. -:

Applications of X20Cr13 Stainless Steel Flange for medical instruments -:- For detailed product information, please contact sales. -: Chemical Identifiers X20Cr13 Stainless Steel Flange for medical instruments -:- For detailed product information, please contact sales. -:

Packing of X20Cr13 Stainless Steel Flange 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 Flange 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 3875 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