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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AISI 1541 Steel Flange, Cold Drawn Bar (UNS G15410) Product Information
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AISI 1541 Steel Flange, Cold Drawn Bar (UNS G15410) Synonyms
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AISI 1541 Steel, Cold Drawn Bar (UNS G15410) Product Information
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### **Product Introduction: AISI 1541 Steel, Cold Drawn Bar (UNS G15410)**
**Overview**
AISI 1541 (UNS G15410) is a high-manganese, medium-carbon alloy steel supplied in the precision **cold drawn bar** condition. This advanced manufacturing process transforms hot-rolled stock through cold working, resulting in a product with superior dimensional accuracy, a bright and smooth surface finish, and significantly enhanced mechanical properties via strain hardening. The defining high manganese content (1.35-1.65%) provides excellent inherent hardenability, making this material a premium choice for high-strength components that require precision machining, dimensional stability, and a reliable foundation for subsequent heat treatment.
**Key Features & Advantages**
* **Enhanced Strength and Hardness:** The cold drawing process significantly increases yield and tensile strength through strain hardening. This "as-drawn" condition provides a higher strength starting material compared to hot-rolled stock, potentially reducing or eliminating the need for heat treatment in some applications.
* **Superior Dimensional Precision and Surface Quality:** Offers tight diameter tolerances (ASTM A108), excellent straightness, and a bright, scale-free surface with low roughness. This reduces machining allowances, improves part assembly and performance, and minimizes secondary finishing operations.
* **Excellent Hardenability and Heat Treatment Response:** The high manganese content ensures deep and uniform hardenability. When final heat treatment (quenching & tempering) is required, the consistent, cold worked microstructure provides a predictable and uniform starting condition for optimal results.
* **Good Machinability for High-Strength Steel:** In the cold drawn condition, it offers fair and consistent machinability for its strength class, enabling efficient and reliable production of precision components with predictable tool wear.
* **Manufacturing Efficiency and Reliability:** Serves as a near-net-shape material that reduces processing steps, minimizes material waste, and provides consistent quality, streamlining the production of critical, high-strength parts.
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### **1. Chemical Composition (Standard Conformance)**
| Element | Standard Range (%) | Key Function |
| :--- | :--- | :--- |
| **Carbon (C)** | 0.36 – 0.44 | Provides core strength and hardenability. Optimized for high strength after heat treatment while maintaining adequate toughness. |
| **Manganese (Mn)** | 1.35 – 1.65 | **Primary Alloying Element.** Dramatically increases hardenability, allowing for effective through-hardening of substantial sections. Significantly contributes to strength and fine grain structure. |
| **Phosphorus (P)** | ≤ 0.040 (max) | Residual element, minimized for toughness. |
| **Sulfur (S)** | ≤ 0.050 (max) | Residual element, kept low. **This is not a free-machining steel.** |
| **Silicon (Si)** | 0.15 – 0.35 | Deoxidizer; solid solution strengthener. |
| **Iron (Fe)** | Balance | Base element. |
**Key International Standard Equivalents:**
* **UNS:** G15410
* **AISI/SAE:** 1541
* **ASTM:** **A108** (Standard Specification for Steel Bar, Carbon and Alloy, Cold-Finished)
* **ASTM:** A29 (General Requirements)
* **DIN (Germany):** 1.1167 / 38Mn6 (Close analogue)
* **EN (Europe):** 1.1167 / 38Mn6
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### **2. Typical Physical & Mechanical Properties (Cold Drawn Condition)**
*Properties reflect the significant strain hardening from cold drawing. Values are for the as-drawn state.*
| Property | Typical Value / Description |
| :--- | :--- |
| **Density** | 7.85 g/cm³ (0.284 lb/in³) |
| **Tensile Strength** | 750 – 900 MPa (109 – 131 ksi) |
| **Yield Strength (0.2% Offset)** | **620 – 780 MPa (90 – 113 ksi)** – *Key benefit of cold work* |
| **Elongation (in 50mm)** | 12% – 18% |
| **Brinell Hardness (HB)** | 220 – 280 |
| **Machinability (Comparison)** | Fair to Moderate (~35-40% of AISI 1212). Requires robust setups, positive rake tools, and appropriate parameters. |
| **Surface Roughness (Ra)** | 1.6 – 3.2 μm (63 – 125 μin). Bright, smooth commercial finish. |
| **Tolerances** | Meets ASTM A108 cold-drawn tolerances for precision machining. |
| **Hardenability Potential** | High; an excellent candidate for subsequent quenching & tempering to achieve ultimate strength (HRC 40-50+). |
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### **3. Product Applications**
AISI 1541 cold drawn bars are specified for critical, high-strength components where precision, reliability, and performance are non-negotiable.
* **High-Strength Precision Shafting:** Axle shafts, drive shafts, spindle shafts, and hydraulic piston rods requiring exceptional straightness, surface finish, and high yield strength.
* **High-Performance Fasteners and Pins:** Bolts, studs, dowel pins, and hinge pins machined from bar stock, often heat-treated to very high strength levels (exceeding Grade 8.8/10.9).
* **Hydraulic and Pneumatic Components:** High-pressure cylinder rods, piston rods, and valve spools where surface integrity and strength prevent failure.
* **Automotive and Off-Highway Drivetrain:** Transmission shafts, axle components, and steering parts for demanding conditions.
* **Gear, Sprocket, and Bearing Components:** Blanks for through-hardened gears, rollers, and other wear-resistant parts.
* **Tooling and Heavy-Duty Machine Parts:** Ejector pins, guide rods, fixture components, and press tools requiring high strength and wear resistance.
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### **4. Important Considerations**
* **Residual Stress Management:** Cold drawing induces significant residual surface stresses. For parts undergoing complex, asymmetric, or heavy machining, **a stress-relieving heat treatment (e.g., 550-650°C / 1020-1200°F) prior to final machining is strongly recommended** to prevent distortion and ensure dimensional stability.
* **Heat Treatment Strategy:** Three primary paths: 1) **Use as-drawn** where its cold-worked strength suffices. 2) **Machine, then quench & temper** for maximum strength (requires distortion control). 3) **Stress relieve, machine, then heat treat** for complex, high-precision critical parts.
* **Machinability:** Not a free-machining steel. Requires rigid machine tools, sharp carbide inserts, optimal feeds/speeds, and ample coolant. For extensive machining, specifying an annealed condition may be advantageous.
* **Weldability:** **Weldable only with strict, controlled procedures.** Mandatory preheat (250-350°C / 480-660°F), low-hydrogen electrodes, and post-weld heat treatment (PWHT) are required to avoid hydrogen cracking and restore properties in the HAZ. Welding on finished hardened components is not recommended.
* **Comparison to Hot-Rolled 1541:** Offers superior surface finish, tighter tolerances, higher strength, better straightness, and more consistent machining performance.
* **Comparison to 1144 Cold Drawn:** 1541 CD offers superior toughness, through-hardenability, and overall mechanical performance, but lower machinability. 1144 CD is a high-strength free-machining steel; 1541 CD is a high-performance engineering steel.
* **"H" Grade Available:** **AISI 1541H** is available in cold drawn form for applications requiring guaranteed hardenability bands (SAE J1268), providing the highest level of predictability for critical heat-treated components.
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**Disclaimer:** This information is based on standard industry specifications. Actual properties may vary. For engineering applications, consult certified material test reports and conduct appropriate validation testing. The decision to use the material as-drawn or to apply subsequent heat treatment is a fundamental design choice impacting manufacturing process, cost, and final performance.
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AISI 1541 Steel, Cold Drawn Bar (UNS G15410) Specification
Dimensions
Size：
Diameter 20-1000 mm Length <5041 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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AISI 1541 Steel, Cold Drawn Bar (UNS G15410) Properties
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Applications of AISI 1541 Steel Flange, Cold Drawn Bar (UNS G15410)
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Chemical Identifiers AISI 1541 Steel Flange, Cold Drawn Bar (UNS G15410)
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Packing of AISI 1541 Steel Flange, Cold Drawn Bar (UNS G15410)
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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 1512 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
