ASTM A424 Steel Flange, type 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 A424 Steel Flange, type I, direct cover coat Product Information -:- For detailed product information, please contact sales. -: ASTM A424 Steel Flange, type I, direct cover coat Synonyms -:- For detailed product information, please contact sales. -:

ASTM A424 Steel, type I, direct cover coat Product Information -:- For detailed product information, please contact sales. -: ### **Technical Data Sheet: ASTM A424 Steel, Type I (Direct Cover Coat)** --- #### **1. Product Overview** ASTM A424 Type I, Direct Cover Coat is a **terne-coated steel sheet** specifically designed for applications requiring excellent solderability, corrosion resistance, and formability. The terne coating consists of a lead-tin alloy applied to cold-rolled steel sheet, providing superior protection against corrosion while maintaining good fabrication characteristics. This material is particularly suitable for automotive fuel tanks, oil filters, and other applications where corrosion resistance and solderability are critical requirements. --- #### **2. International Standards & Equivalents** | Standard Organization | Designation | |-----------------------|-------------| | **ASTM International** | **A424 Type I** | | **UNS Number** | **K02602** | | **ISO International Standard** | **ISO 4999** | | **European Norm (EN)** | **EN 10205** | | **Japanese (JIS)** | **G3313** | | **German (DIN)** | **DIN 1616** | --- #### **3. Chemical Composition (Weight %)** **Base Steel Composition:** | Element | Composition (%) | |---------|-----------------| | **Carbon (C)** | 0.13 max | | **Manganese (Mn)** | 0.60 max | | **Phosphorus (P)** | 0.035 max | | **Sulfur (S)** | 0.035 max | | **Silicon (Si)** | 0.10 max | | **Iron (Fe)** | Balance | **Terne Coating Composition:** | Element | Composition (%) | |---------|-----------------| | **Lead (Pb)** | 75-90% | | **Tin (Sn)** | 10-25% | | **Other Elements** | 0.50 max | **Key Composition Features:** - **Low Carbon Steel Base**: Ensures excellent formability - **Lead-Tin Alloy Coating**: Provides corrosion protection and solderability - **Controlled Coating Thickness**: Typically 0.6-1.5 μm per side - **Coating Weight**: 30-120 g/m² total both sides --- #### **4. Mechanical Properties** **Base Metal Properties:** - **Tensile Strength**: 310-450 MPa (45,000-65,000 psi) - **Yield Strength**: 205 MPa (30,000 psi) min - **Elongation in 50 mm (2 in)**: 22% min - **Hardness**: 55-75 HRB **Coating Properties:** - **Coating Adhesion**: Excellent - withstands forming without flaking - **Solderability**: Excellent with all common solder alloys - **Coating Uniformity**: Consistent coverage across surface --- #### **5. Physical Properties** | Property | Value | |----------|-------| | **Density (Base Steel)** | 7.85 g/cm³ | | **Density (Terne Coating)** | 9.50-10.50 g/cm³ | | **Melting Point (Coating)** | 183-327°C (361-621°F) | | **Thermal Conductivity** | 48.0 W/m·K | | **Coefficient of Thermal Expansion** | 12.0 × 10⁻⁶ /K | | **Electrical Conductivity** | 12-15% IACS | | **Magnetic Properties** | Ferromagnetic | --- #### **6. Product Applications** **Automotive Industry:** - Fuel tanks and fuel system components - Oil filters and filter housings - Air cleaner assemblies - Brake system components - Transmission parts **Industrial Applications:** - Radiator components - Heat exchanger parts - Electrical enclosures - Chemical containers - General corrosion-resistant applications **Consumer Products:** - Gasoline containers - Oil cans and lubricant containers - Decorative hardware - Specialty packaging --- #### **7. Manufacturing & Fabrication** **Forming Characteristics:** - **Excellent Formability**: Suitable for deep drawing and stamping - **Coating Adhesion**: Maintains integrity during severe forming - **Minimum Bend Radius**: 1.0 × thickness - **Tooling Requirements**: Standard tool steel suitable **Joining Methods:** - **Excellent Solderability**: All common solder types - **Soldering Temperature**: 200-300°C (392-572°F) - **Welding**: Resistance welding recommended - **Adhesive Bonding**: Good with proper surface preparation **Surface Treatment:** - **Painting**: Good adhesion with proper pretreatment - **Chemical Treatment**: Phosphating recommended for paint adhesion - **Storage**: Dry conditions to prevent white rust --- #### **8. Quality Assurance & Testing** **Standard Tests:** - Coating weight measurement - Coating composition analysis - Adhesion testing (bend test) - Solderability testing - Surface quality inspection **Performance Tests:** - Corrosion resistance testing - Formability testing - Adhesion after forming - Chemical resistance evaluation --- #### **9. Corrosion Performance** - **Atmospheric Corrosion**: Excellent resistance - **Fuel Resistance**: Superior performance with gasoline and oil - **Water Resistance**: Good with proper drainage - **Chemical Resistance**: Resistant to many organic compounds - **Protection Mechanism**: Sacrificial coating protection --- #### **10. Available Product Forms** **Standard Dimensions:** - **Thickness Range**: 0.40 mm to 2.00 mm (0.016" to 0.079") - **Width Range**: 600 mm to 1500 mm (24" to 60") - **Length Range**: 1000 mm to 4000 mm (40" to 160") **Surface Conditions:** - Bright terne coating - Matte finish available - Oiled for protection - Custom surface treatments --- #### **11. Technical Specifications** **Coating Requirements:** - **Coating Weight**: 30-120 g/m² total both sides - **Coating Thickness**: 0.6-1.5 μm per side - **Coating Uniformity**: Minimum 90% coverage - **Surface Quality**: Free from uncoated areas **Dimensional Tolerances:** - **Thickness Tolerance**: ±0.05 mm - **Width Tolerance**: +3 mm, -0 mm - **Length Tolerance**: +6 mm, -0 mm - **Flatness**: 10 mm/m maximum --- **Technical Notes:** - Direct cover coat provides immediate corrosion protection - Excellent for applications requiring soldered joints - Suitable for contact with petroleum products - Proper ventilation required during soldering operations - Storage in dry conditions recommended to prevent corrosion *This information is for reference purposes. For complete requirements and current specifications, consult the latest ASTM A424 standard and applicable industry specifications. Always verify material properties with certified mill test reports for critical applications.* -:- For detailed product information, please contact sales. -: ASTM A424 Steel, type I, direct cover coat Specification Dimensions Size： Diameter 20-1000 mm Length <4244 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 A424 Steel, type I, direct cover coat Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A424 Steel Flange, type I, direct cover coat -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A424 Steel Flange, type I, direct cover coat -:- For detailed product information, please contact sales. -:

Packing of ASTM A424 Steel Flange, type I, direct cover coat -:- 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 715 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