ASTM A227 Steel Flange, Class I

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. -: ASTM A227 Steel Flange Flange, Class I Product Information -:- For detailed product information, please contact sales. -: ASTM A227 Steel Flange Flange, Class I Synonyms -:- For detailed product information, please contact sales. -:

ASTM A227 Steel Wire, Class I Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: ASTM A227 Class I Steel Wire** **ASTM A227 Class I** is a cold-drawn carbon steel wire specifically designed for mechanical spring applications. This class represents the standard grade within the A227 specification, offering a balanced combination of strength and ductility for general-purpose spring manufacturing and other mechanical applications requiring reliable performance. --- #### **1. International Standards & Classification** **Primary Standard:** **ASTM A227/A227M** - "Standard Specification for Steel Wire, Cold-Drawn for Mechanical Springs" **Classification:** - **Class I** - Standard hard-drawn steel spring wire - **Class II** - Special quality with closer dimensional tolerances **International Equivalents:** - **EN 10270-1**: SH (Spring Hardened) grade - **JIS G 3521**: SWP-A - **GB/T 4357**: Grade D - **ISO 8458-2**: Class A --- #### **2. Chemical Composition** The typical chemical composition requirements for ASTM A227 Class I: | Element | Composition (Maximum %) | |---|---| | Carbon (C) | 0.85-0.95 | | Manganese (Mn) | 0.30-0.60 | | Phosphorus (P) | 0.025 | | Sulfur (S) | 0.025 | | Silicon (Si) | 0.10-0.30 | **Key Composition Features:** - **High Carbon Content**: Primary contributor to strength and spring properties - **Controlled Manganese**: Enhances hardenability and strength - **Low Impurity Levels**: Ensures consistent mechanical properties - **Silicon Content**: Provides solid solution strengthening --- #### **3. Physical & Mechanical Properties** **Mechanical Properties (Typical for various diameters):** | Wire Diameter (mm) | Tensile Strength (MPa) | Torsion Tests (min. twists) | |---|---|---| | 0.50-1.00 | 1850-2150 | 20-25 | | 1.01-2.00 | 1750-2050 | 18-22 | | 2.01-3.00 | 1650-1950 | 16-20 | | 3.01-4.00 | 1550-1850 | 14-18 | **Physical Properties:** - **Density**: 7.85 g/cm³ (0.284 lb/in³) - **Modulus of Elasticity**: 200 GPa (29,000 ksi) - **Shear Modulus**: 77 GPa (11,200 ksi) - **Thermal Conductivity**: 49.5 W/m·K - **Coefficient of Thermal Expansion**: 11.5 × 10⁻⁶/°C --- #### **4. Product Applications** **Spring Manufacturing:** - Compression springs - Extension springs - Torsion springs - Volute springs **Industrial Applications:** - Mechanical seals - Clutch springs - Valve springs - Electrical contacts **Consumer Products:** - Furniture springs - Appliance components - Office equipment springs - Hardware springs **Automotive Applications:** - Suspension components - Brake system springs - Transmission components - Engine valve springs --- #### **5. Fabrication Characteristics** **Forming Performance:** - **Good Formability**: Suitable for cold coiling operations - **Springback Characteristics**: Predictable and consistent - **Surface Quality**: Adequate for most spring applications - **Winding Performance**: Good for automatic spring coiling machines **Heat Treatment Considerations:** - **Stress Relieving**: Recommended after forming (250-300°C) - **No Hardening Required**: Properties achieved through cold drawing - **Temperature Limits**: Maximum service temperature 120°C (250°F) **Surface Finish:** - **Standard Finish**: Bright or slightly oxidized surface - **Surface Defects**: Minimal for satisfactory performance - **Coating Compatibility**: Good for plating and coating processes **Quality Assurance:** - **Tensile Testing**: Required for each lot - **Torsion Testing**: Mandatory quality control - **Dimensional Checks**: Standard tolerances apply - **Surface Inspection**: Visual examination required --- ### **Technical Summary** ASTM A227 Class I represents a cost-effective, general-purpose cold-drawn spring steel wire that provides reliable performance for a wide range of mechanical spring applications. The high carbon content (0.85-0.95%) combined with the cold drawing process produces the necessary strength and spring properties without requiring additional heat treatment. This class offers an excellent balance between strength, ductility, and cost-effectiveness, making it suitable for volume production of springs where premium performance characteristics are not required. The material's consistent mechanical properties and good formability facilitate efficient manufacturing processes in spring production. While not suitable for high-stress or high-temperature applications that require oil-tempered or other premium spring wires, ASTM A227 Class I has established itself as a reliable choice for general mechanical springs in industrial, automotive, and consumer products. Its proven performance history and economical nature continue to make it a popular selection for manufacturers seeking consistent quality and reliable performance in standard spring applications. -:- For detailed product information, please contact sales. -: ASTM A227 Steel Wire, Class I Specification Dimensions Size： Diameter 20-1000 mm Length <4343 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. -: ASTM A227 Steel Wire, Class I Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A227 Steel Flange Flange, Class I -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A227 Steel Flange Flange, Class I -:- For detailed product information, please contact sales. -:

Packing of ASTM A227 Steel Flange Flange, Class I -:- 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 814 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