JIS S55C 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. -: JIS S55C Steel Flange, Tempered Product Information -:- For detailed product information, please contact sales. -: JIS S55C Steel Flange, Tempered Synonyms -:- For detailed product information, please contact sales. -:

JIS S55C Steel, Tempered Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: JIS S55C Carbon Steel (Tempered)** **JIS S55C** is a medium-high carbon steel grade standardized by the Japanese Industrial Standards (JIS). In its **tempered** condition (quenched and high-temperature tempered), it is widely recognized for its excellent combination of high strength, good toughness, and fair machinability. The "S" denotes "Steel," "55" indicates an average carbon content of 0.55%, and "C" stands for Carbon steel. The quenching and tempering heat treatment process transforms S55C, enhancing its core mechanical properties. It achieves a tempered martensitic microstructure, providing a superior balance of strength and ductility compared to its normalized or annealed states. This makes it a versatile and cost-effective choice for a broad range of structural and mechanical components requiring durability and wear resistance. --- ### **1. Chemical Composition (JIS G 4051 Standard)** The composition is defined by JIS G 4051 (Carbon steels for machine structural use). Key elements are as follows (in weight %): | Element | Carbon (C) | Silicon (Si) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | | :--- | :--- | :--- | :--- | :--- | :--- | | **Content** | 0.52 - 0.58 | 0.15 - 0.35 | 0.60 - 0.90 | ≤ 0.030 | ≤ 0.035 | * **Note:** The balanced composition, with controlled impurities (P, S), ensures good hardenability and a reliable response to heat treatment. --- ### **2. Physical & Mechanical Properties (Typical Values for Tempered Condition)** Properties can vary based on the specific quenching medium (oil/water) and tempering temperature. The following are typical ranges for oil-quenched and tempered S55C. * **Tensile Strength (σb):** 700 - 850 MPa * **Yield Strength (σ0.2):** ≥ 450 MPa * **Elongation (δ):** ≥ 17% * **Reduction of Area (ψ):** ≥ 45% * **Hardness:** 217 - 269 HB (Approx. 20 - 28 HRC) * **Impact Toughness (Charpy):** ~ 40 - 60 J (value depends heavily on tempering temperature) * **Modulus of Elasticity (E):** ~ 205 - 210 GPa * **Density:** 7.85 g/cm³ **Heat Treatment (Typical):** * **Quenching:** Austenitizing at ~830°C - 850°C, followed by oil cooling. * **Tempering:** Typically performed in the range of 550°C - 650°C to achieve the desired strength-toughness balance. --- ### **3. Product Applications** JIS S55C in its tempered condition is ideal for components that require high strength, good fatigue resistance, and moderate wear resistance. Common applications include: * **Automotive Components:** Crankshafts, axle shafts, connecting rods, gears, and bolts. * **General Machinery:** Spindles, shafts, pins, keys, and couplings. * **Construction & Agricultural Equipment:** High-strength bolts, pivot shafts, and linkage parts. * **Tools & Dies:** Jigs, fixtures, and die bases where high rigidity is needed. * **Industrial Hardware:** Forklift tines, hydraulic cylinder rods (for lower-pressure applications), and other stressed components. --- ### **4. International & Equivalent Standards** JIS S55C has close equivalents in many international standards systems. | Standard System | Equivalent Grade | Condition | Remark | | :--- | :--- | :--- | :--- | | **JIS** | **S55C** | Tempered (QT) | Primary standard | | **ASTM/AISI** | 1055 | Similar composition, properties may vary with heat treatment. | | | **DIN (EN)** | 1.1203 (C55E / C55R) | European equivalent with very similar specs. | | | **ISO** | ISO 683-18: Type 1.1200 | International approximate equivalent. | | | **GB (China)** | 55# Steel | Very close equivalent. | | | **KS (Korea)** | KS S55C | Directly equivalent. | | **Note:** While chemical compositions are very similar, precise mechanical property specifications and recommended heat treatment cycles may differ between standards. It is crucial to refer to the specific standard required for the application. --- ### **5. Key Advantages & Considerations** **Advantages:** * **Excellent Strength-to-Price Ratio:** Offers high performance at a relatively low material cost. * **Good Hardenability:** Suitable for oil quenching, reducing the risk of distortion and cracking compared to water-quenching steels. * **Machinability:** Fair machinability in the tempered condition, better than in the hardened state. * **Weldability:** Can be welded with pre-heating and post-heating procedures, though it is not typically recommended for critical welded structures. **Considerations:** * **Not a Stainless Steel:** Requires surface protection (coating, plating) to prevent corrosion. * **Heat Treatment Essential:** To achieve the described properties, proper quenching and tempering are mandatory. * **Not for Extreme Wear/Impact:** For applications requiring extreme wear resistance or impact toughness, alloy steels (e.g., SCM, SNCM series) are more appropriate. --- **Disclaimer:** The information provided is for general reference purposes. Actual material properties are dependent on the specific manufacturing process, heat treatment parameters, and section size of the final product. For critical applications, always consult the official material data sheets and engage with qualified metallurgical engineers. -:- For detailed product information, please contact sales. -: JIS S55C Steel, Tempered Specification Dimensions Size： Diameter 20-1000 mm Length <5060 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. -: JIS S55C Steel, Tempered Properties -:- For detailed product information, please contact sales. -:

Applications of JIS S55C Steel Flange, Tempered -:- For detailed product information, please contact sales. -: Chemical Identifiers JIS S55C Steel Flange, Tempered -:- For detailed product information, please contact sales. -:

Packing of JIS S55C Steel Flange, Tempered -:- 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 1531 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