International Mold Steel Flange NAK-HH Precipitation Hardened Mold Steel Flange

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. -: International Mold Steel Flange NAK-HH Precipitation Hardened Mold Steel Flange Product Information -:- For detailed product information, please contact sales. -: International Mold Steel Flange NAK-HH Precipitation Hardened Mold Steel Flange Synonyms -:- For detailed product information, please contact sales. -:

International Mold Steel NAK-HH Precipitation Hardened Mold Steel Product Information -:- For detailed product information, please contact sales. -: **Product Introduction: NAK-HH Precipitation Hardened Stainless Mold Steel** --- ## **1. Overview** **NAK-HH** is a premium-grade, **precipitation-hardened (PH) stainless mold steel** developed by the International Mold Steel (IMS) group. It represents an advanced material solution specifically engineered for high-performance plastic injection molds and die-casting tooling requiring exceptional **corrosion resistance, high polishability, and excellent dimensional stability** after heat treatment. Unlike conventional quenched & tempered tool steels, NAK-HH attains its high hardness and strength through a low-temperature aging process that minimizes distortion. Its "HH" designation indicates "High Hardness" capability. This steel is particularly valued in manufacturing optical lenses, medical devices, and electronic components where superior surface finish and resistance to corrosive plastics are critical. --- ## **2. International Standards & Specifications** As a proprietary brand steel, NAK-HH is defined by the manufacturer's internal specifications. However, it corresponds to well-known international grades and is produced to meet the highest industry standards for mold steel. * **Primary Manufacturer Standard:** * **International Mold Steel (IMS) NAK-HH:** Proprietary specification defining chemistry, processing, and guaranteed properties. * **Key International Equivalents & Benchmarks:** * **AISI / UNS S42000 Modified (Premium Grade):** Falls within the martensitic stainless family but with optimized chemistry for PH hardening. * **DIN 1.2083 / 1.2085 (Enhanced):** Often compared to these popular German mold steels (e.g., 420 Stainless), but NAK-HH offers superior corrosion resistance and hardening mechanism. * **JIS SUS420J2 Modified:** Japanese stainless mold steel equivalent. * **Industry Benchmark:** It is designed to outperform standard P20 (1.2311) and 420 (1.2083) steels in corrosion resistance and polishability, competing with higher-end grades like **Stavax ESR (1.2083)** or **Corrax (1.6310 PH Steel)** in specific applications. --- ## **3. Chemical Composition (Weight %, Typical)** The composition is carefully balanced for hardness, corrosion resistance, and polishability. | Element | Typical Range (%) | Role & Benefit | | :--- | :--- | :--- | | **Carbon (C)** | 0.20 – 0.25 | Provides base hardness and wear resistance after heat treatment. | | **Chromium (Cr)** | 15.00 – 16.00 | **Primary alloy.** Ensures **excellent corrosion resistance** (superior to standard 420 grades) and contributes to hardness. | | **Nickel (Ni)** | 3.00 – 4.00 | **Key for PH hardening.** Enables the precipitation hardening mechanism, increases toughness, and aids in austenite stabilization. | | **Molybdenum (Mo)** | 0.80 – 1.20 | Enhances hardness, strength, and further improves corrosion resistance (especially pitting resistance). | | **Vanadium (V)** | 0.10 – 0.20 | Refines grain size, improves wear resistance, and contributes to secondary hardening during aging. | | **Manganese (Mn)** | 0.50 – 0.80 | Aids in deoxidation and improves hardenability. | | **Silicon (Si)** | 0.30 – 0.60 | Deoxidizer, improves fluidity and polishability. | | **Sulfur (S)** | ≤ 0.005 | **Very low.** Critical for achieving **excellent mirror polishability** (prevents sulfide inclusions). | --- ## **4. Typical Physical & Mechanical Properties** * **Heat Treatment Process:** 1. **Solution Annealing:** ~1020-1050°C, followed by rapid cooling (to achieve a soft, workable condition ~30 HRC). 2. **Machining & Fabrication:** Performed in the annealed state. 3. **Precipitation Hardening (Aging):** A single, low-temperature treatment (~480-520°C for several hours). This process induces hardening with **minimal distortion** (<0.05%) compared to conventional quenching. * **Final Hardness:** **40 - 52 HRC** (achievable via aging; specific hardness is customer-specified and controlled by aging parameters). * **Tensile Strength:** 1300 - 1650 MPa (189,000 - 239,000 psi) *[at ~48 HRC]* * **Yield Strength (0.2% Offset):** 1100 - 1400 MPa (160,000 - 203,000 psi) * **Elongation:** ~10-15% * **Density:** ~ 7.78 g/cm³ * **Thermal Conductivity:** ~ 25 W/m·K (at 20°C) * **Coefficient of Thermal Expansion:** ~ 10.5 x 10⁻⁶ /K (20-100°C) * **Corrosion Resistance:** **Excellent.** Far superior to standard P20 and 420 grades, resistant to moisture, many plastics (including PVC), and mild acids. * **Polishability:** **Exceptional (Mirror Finish).** Achieves very high surface finishes (e.g., #12000 grit diamond paste or better) due to its homogeneous, fine-grained structure and very low sulfur content. --- ## **5. Product Application** NAK-HH is specified for high-end, precision mold tools where surface quality and durability are paramount. * **Plastic Injection Molds:** * **Optical Components:** Lenses, light guides, reflectors. * **Medical Devices:** Syringes, implants, diagnostic equipment housings. * **Consumer Electronics:** High-gloss housings, transparent parts, connectors. * **Corrosive Plastics:** Molds for PVC, flame-retardant (FR) plastics, and acid-releasing materials. * **Die Casting:** Erosion inserts and cores for aluminum, magnesium, and zinc die-casting, where corrosion from coolants is an issue. * **General Precision Tooling:** Core pins, ejector pins, and mold inserts requiring high hardness and corrosion resistance. --- ## **6. Key Features & Advantages** * **Minimal Distortion Heat Treatment:** The low-temperature aging process drastically reduces the risk of warping and dimensional changes compared to traditional high-temperature quenching, saving time and cost on post-heat-treatment machining. * **Superior Corrosion Resistance:** High Chromium content provides excellent protection against rust and chemical attack from plastics and coolants, extending mold life and reducing maintenance. * **Outstanding Polishability & Texture Transfer:** Ultra-low sulfur and a fine, uniform microstructure allow for achieving flawless mirror finishes and perfect replication of fine textures (e.g., etch textures). * **Good Machinability & Weldability:** In the annealed condition, it machines relatively well. It can also be welded with proper procedures (using matching filler metals). * **High Uniformity & Purity:** Typically produced using advanced melting processes (like ESR - Electro Slag Remelting) to ensure exceptional cleanliness and isotropic properties. --- **In summary, International Mold Steel NAK-HH is a high-end, precipitation-hardening stainless mold steel designed for the most demanding tooling applications. Its primary value lies in its ability to achieve high hardness with minimal distortion, coupled with best-in-class corrosion resistance and polishability, making it an ideal choice for manufacturing precision, high-gloss, and corrosion-sensitive plastic and die-cast components.** -:- For detailed product information, please contact sales. -: International Mold Steel NAK-HH Precipitation Hardened Mold Steel Specification Dimensions Size： Diameter 20-1000 mm Length <7016 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. -: International Mold Steel NAK-HH Precipitation Hardened Mold Steel Properties -:- For detailed product information, please contact sales. -:

Applications of International Mold Steel Flange NAK-HH Precipitation Hardened Mold Steel Flange -:- For detailed product information, please contact sales. -: Chemical Identifiers International Mold Steel Flange NAK-HH Precipitation Hardened Mold Steel Flange -:- For detailed product information, please contact sales. -:

Packing of International Mold Steel Flange NAK-HH Precipitation Hardened Mold Steel Flange -:- 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 3487 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