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."
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AK Steel Flange ZINCGRIP® FORMABLE 50K / ASTM A1008 class 2 / SAE J1392 050 XLK, Grade 50 Electrogalvanized Carbon Steel Flange, High Strength Low Alloy Steel Flange (HSLAS) Product Information
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AK Steel Flange ZINCGRIP® FORMABLE 50K / ASTM A1008 class 2 / SAE J1392 050 XLK, Grade 50 Electrogalvanized Carbon Steel Flange, High Strength Low Alloy Steel Flange (HSLAS) Synonyms
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AK Steel ZINCGRIP® FORMABLE 50K / ASTM A1008 class 2 / SAE J1392 050 XLK, Grade 50 Electrogalvanized Carbon Steel, High Strength Low Alloy Steel (HSLAS) Product Information
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# **Product Introduction: AK Steel ZINCGRIP® FORMABLE 50K (Class 2) Electrogalvanized HSLA Steel**
**AK Steel ZINCGRIP® FORMABLE 50K (Class 2)** is a premium **electrogalvanized (EG) high-strength low-alloy (HSLA) steel sheet** engineered to provide **50 ksi (345 MPa) minimum yield strength** with a **balanced combination of structural performance and moderate formability**, enhanced by a protective zinc coating. Certified to both **ASTM A1008 Class 2 (Structural)** and **SAE J1392 050 XLK** standards, this material is optimized for applications where **primary focus is on structural integrity and weldability**, with sufficient formability for standard manufacturing operations. The "FORMABLE" designation indicates improved bending characteristics over conventional HSLA steels, while the "K" suffix represents a **producer-determined strength range**. The electrogalvanized coating offers superior corrosion protection and paintability, making this an ideal choice for structural components requiring durability and aesthetic finish.
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## **International Standard & Key Specifications**
* **Primary Commercial Designation:** **AK Steel ZINCGRIP® FORMABLE 50K (Class 2)**.
* **Cross-Referenced Standards:**
* **ASTM A1008/A1008M** - Standard Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy and High-Strength Low-Alloy with Improved Formability. **Class 2: Structural**.
* **SAE J1392** - Hot Rolled and Cold Rolled HSLA Steel Sheet and Strip. **Grade Designation: 050 XLK** (050 = 50 ksi min yield, XL = High Strength Low-Alloy, K = Producer-Determined Chemistry).
* **Coating Specification:** **Electrogalvanized (EG)** per **ASTM A879**, typically supplied as **EG60 (0.60 oz/ft² total both sides)**. Various coating weights available per requirement.
* **Key Distinction:** While maintaining "FORMABLE" characteristics, the **Class 2 designation** prioritizes structural performance and consistency over the maximum formability of Class 1 grades, offering a more cost-effective solution for applications with moderate forming requirements.
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## **Chemical Composition (Weight %, typical)**
The chemistry balances strength achievement with coating compatibility and adequate formability for structural applications.
| Element | Composition (Typical for Class 2) | Role in Performance |
| :--- | :--- | :--- |
| **Carbon (C)** | 0.10 - 0.18 | Provides base strength while maintaining weldability and coating adhesion. |
| **Manganese (Mn)** | 0.90 - 1.50 | Primary solid solution strengthener for achieving 50 ksi yield. |
| **Phosphorus (P)** | 0.030 max | Controlled impurity for adequate formability. |
| **Sulfur (S)** | 0.025 max | Controlled for weldability and ductility. |
| **Silicon (Si)** | 0.05 - 0.25 | Kept at moderate levels to ensure good galvanizing response. |
| **Columbium (Cb/Nb)** | 0.01 - 0.06 | Key microalloy for grain refinement and precipitation strengthening. |
| **Vanadium (V)** | 0.01 - 0.10 | Complementary microalloy for precipitation strengthening. |
| **Carbon Equivalent (CE)** | Typically 0.30 - 0.38 | Moderate, indicating good weldability with proper procedures. |
**Galvanizing Compatibility:** The chemistry is controlled to prevent issues with the electrogalvanizing process, ensuring a uniform, adherent zinc coating suitable for subsequent painting.
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## **Typical Physical & Mechanical Properties**
Properties represent the electrogalvanized sheet after processing. The electrodeposition process minimally affects base metal properties.
| Property | Value / Description |
| :--- | :--- |
| **Yield Strength (min)** | **345 MPa (50,000 psi)** |
| **Tensile Strength** | 480 - 620 MPa (70,000 - 90,000 psi) |
| **Elongation in 2-in (50 mm) (min)** | **18% - 22%** (Adequate for most structural forming operations) |
| **Yield-to-Tensile Ratio** | Typically 0.72 - 0.80 |
| **Modulus of Elasticity** | ~200 GPa (29 x 10⁶ psi) |
| **Coating Type** | **Electrogalvanized (EG)** - Zinc electrodeposited for uniform coverage. |
| **Coating Mass (Typical)** | **EG60** (Total 0.60 oz/ft² or ~185 g/m², both sides). Other designations (EG40, EG90) available. |
| **Coating Characteristics** | Smooth, consistent, spangle-free surface. Excellent for painting. |
| **Formability** | **Good (for structural applications).** Suitable for **simple to moderate bending, roll-forming, and stamping.** Minimum bend radius typically **1.5-2.0× material thickness**. |
| **Weldability** | **Very Good.** Can be welded using common processes (RSW, GMAW, SMAW). Low-hydrogen practices recommended for thicker sections. |
| **Corrosion Resistance** | Zinc coating provides sacrificial protection, significantly extending service life, especially when painted. |
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## **Product Applications**
This material is designed for structural components requiring 50 ksi strength, corrosion protection, and moderate formability, particularly where a painted finish is desired.
**Primary Industries and Products:**
1. **Structural Components & Framing:**
* **Building frames, purlins, and structural supports.**
* **Equipment bases and mounting brackets.**
* **Industrial shelving and storage system components.**
2. **Transportation Equipment:**
* **Trailer and truck body structural members.**
* **Agricultural equipment frames and guards.**
* **Heavy vehicle interior structural components.**
3. **HVAC & Electrical:**
* **Heating/ventilation equipment housings and supports.**
* **Electrical enclosure frames and cabinets.**
* **Switchgear components and supports.**
4. **Industrial Equipment:**
* **Machine guards and safety enclosures.**
* **Material handling equipment components.**
* **Work platforms and access structures.**
5. **Consumer Durables:**
* **Appliance structural frames and supports.**
* **Office furniture frames and brackets.**
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## **Advantages and Fabrication Considerations**
* **Advantages:**
* **Balanced Performance:** Optimized blend of 50 ksi strength, structural reliability, and moderate formability.
* **Superior Corrosion Protection:** Electrogalvanized coating provides excellent base for painted finishes and long-term durability.
* **Cost-Effectiveness:** Class 2 designation often offers better value than Class 1 for applications not requiring extreme formability.
* **Excellent Paintability:** Smooth EG surface requires minimal pretreatment for high-quality painting.
* **Consistent Quality:** Dual certification ensures reliable mechanical and coating properties.
* **Fabrication Considerations:**
* **Welding Adjustments:** For resistance spot welding, parameters may need adjustment to accommodate the zinc coating. Proper ventilation is necessary.
* **Forming Limitations:** Not suitable for severe deep drawing or complex stamping. Adhere to recommended minimum bend radii.
* **Surface Preparation:** The EG surface is paint-ready; ensure proper cleaning to remove forming lubricants or contaminants before painting.
* **Edge Protection:** While the zinc coating protects sheared edges sacrificially, additional edge treatment may be beneficial in highly corrosive environments.
* **Material Specification:** Clearly specify **ZINCGRIP® FORMABLE 50K / ASTM A1008 Class 2 / SAE 050 XLK** to ensure receipt of the correct product variant.
* **Alternative Selection:** For applications requiring **maximum formability**, consider Class 1 grades. For **higher strength** needs, evaluate higher K-grade materials.
**In summary, AK Steel ZINCGRIP® FORMABLE 50K (Class 2) provides an engineered solution for structural applications requiring dependable 50 ksi strength, corrosion resistance, and adequate manufacturability. It represents an optimal choice for manufacturers seeking to balance performance, durability, and cost-effectiveness in components that will be formed, welded, and finished with paint systems.**
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AK Steel ZINCGRIP® FORMABLE 50K / ASTM A1008 class 2 / SAE J1392 050 XLK, Grade 50 Electrogalvanized Carbon Steel, High Strength Low Alloy Steel (HSLAS) Specification
Dimensions
Size：
Diameter 20-1000 mm Length <4576 mm
Size:We can customized as required
Standard：
Per your request or drawing
We can customized as required
Properties（Theoretical）
Chemical Composition
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AK Steel ZINCGRIP® FORMABLE 50K / ASTM A1008 class 2 / SAE J1392 050 XLK, Grade 50 Electrogalvanized Carbon Steel, High Strength Low Alloy Steel (HSLAS) Properties
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Applications of AK Steel Flange ZINCGRIP® FORMABLE 50K / ASTM A1008 class 2 / SAE J1392 050 XLK, Grade 50 Electrogalvanized Carbon Steel Flange, High Strength Low Alloy Steel Flange (HSLAS)
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Chemical Identifiers AK Steel Flange ZINCGRIP® FORMABLE 50K / ASTM A1008 class 2 / SAE J1392 050 XLK, Grade 50 Electrogalvanized Carbon Steel Flange, High Strength Low Alloy Steel Flange (HSLAS)
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Packing of AK Steel Flange ZINCGRIP® FORMABLE 50K / ASTM A1008 class 2 / SAE J1392 050 XLK, Grade 50 Electrogalvanized Carbon Steel Flange, High Strength Low Alloy Steel Flange (HSLAS)
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Standard Packing:
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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 1047 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
