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 1526 Steel Flange Composition Spec (UNS G15260) Product Information
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AISI 1526 Steel Flange Composition Spec (UNS G15260) Synonyms
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AISI 1526 Steel Composition Spec (UNS G15260) Product Information
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### **Product Introduction: AISI 1526 Steel Composition Specification (UNS G15260)**
**Overview**
AISI 1526 (UNS G15260) is a standardized **medium-carbon, high-manganese steel** defined by its specific chemical composition. It is a prominent member of the "15xx" series of **manganese alloy steels**, characterized by a significantly elevated manganese content (typically 1.20-1.50%) which provides substantially enhanced hardenability and strength over plain carbon steels of similar carbon content, such as 1026 or 1030. This grade is engineered for applications requiring a robust combination of strength, toughness, and good response to heat treatment, serving as a versatile and cost-effective engineering steel for stressed components in automotive, agricultural, and general machinery sectors.
**Key Features & Characteristics**
* **Enhanced Hardenability & Strength:** The high manganese content is the defining feature, providing deep and uniform hardenability. This allows the steel to be effectively through-hardened (quenched and tempered) in larger cross-sections, achieving high tensile and yield strength with good core properties.
* **Good Toughness & Wear Resistance:** When properly heat treated, it offers an excellent balance of strength and impact resistance. The fine-grained structure promoted by manganese also contributes to good wear resistance in service.
* **Good Forgeability and Weldability (with precautions):** Suitable for hot forging into complex shapes. It can be welded using established procedures, though preheat and post-weld heat treatment are recommended for thicker sections to maintain toughness in the heat-affected zone (HAZ).
* **Economical Alloy Alternative:** Provides a more cost-effective performance upgrade compared to chromium-molybdenum alloy steels (e.g., 41xx series) for many applications where superior hardenability and moderate-to-high strength are the primary requirements.
* **General Purpose Engineering Steel:** A reliable and widely used material for components that require dependable performance under stress and fatigue loading.
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### **1. Chemical Composition (Standard Conformance)**
| Element | Standard Range (%) | Key Function |
| :--- | :--- | :--- |
| **Carbon (C)** | 0.22 – 0.29 | Provides core strength and hardenability. This medium-carbon level ensures good strength potential while maintaining reasonable ductility and weldability. |
| **Manganese (Mn)** | 1.20 – 1.50 | **Primary Alloying Element.** Dramatically increases hardenability, allowing for effective through-hardening of substantial sections. Also contributes significantly to strength and promotes a fine grain structure. |
| **Phosphorus (P)** | ≤ 0.040 (max) | Residual element, kept very low to ensure good toughness, particularly in the transverse direction. |
| **Sulfur (S)** | ≤ 0.050 (max) | Residual element, kept low. **This is not a free-machining grade.** Ensures better ductility and weldability compared to resulfurized steels. |
| **Silicon (Si)** | 0.15 – 0.35 | Acts as a deoxidizer during steelmaking; contributes to strength. |
| **Iron (Fe)** | Balance | Base element. |
**Key International Standard Equivalents:**
* **UNS:** G15260
* **AISI/SAE:** 1526
* **ASTM:** A29 (Standard Specification for Steel Bars, Carbon and Alloy, Hot-Wrought and Cold-Finished)
* **ASTM:** A519 (for mechanical tubing)
* **DIN (Germany):** ~1.1158 / 38Mn6 (Approximate analogue; carbon and manganese ranges are similar)
* **EN (Europe):** 1.1158 / 38Mn6
* **JIS (Japan):** SMn438 (Similar, JIS G4052)
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### **2. Typical Physical & Mechanical Properties (Condition Dependent)**
*Properties are highly dependent on final heat treatment. The as-rolled or normalized condition is typically for machining, while quenching & tempering develops final service properties.*
| Property / Condition | Normalized/Hot-Rolled | Quenched & Tempered (Example) |
| :--- | :--- | :--- |
| **Density** | 7.85 g/cm³ | 7.85 g/cm³ |
| **Tensile Strength** | 580 – 730 MPa | 950 – 1250 MPa |
| **Yield Strength (0.2% Offset)** | 350 – 500 MPa | 800 – 1100 MPa |
| **Elongation (in 50mm)** | 18% – 25% | 12% – 18% |
| **Reduction of Area** | 40% – 55% | 35% – 50% |
| **Brinell Hardness (HB)** | 180 – 230 | 300 – 400 (HRC 32-42) |
| **Machinability (Normalized)** | Fair (~50% of AISI 1212) | Poor |
| **Impact Toughness** | Good | Good (with proper tempering) |
| **Hardenability (Jominy)** | Medium-High. Suitable for through-hardening sections up to ~50-75mm (2-3 in) with oil quenching. | |
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### **3. Product Applications**
AISI 1526 is selected for medium-to-high stress components that benefit from its reliable hardenability and good strength-toughness balance.
* **High-Stress Shafting and Axles:** Drive shafts, axle shafts, crankshafts, and transmission shafts that are through-hardened for strength and fatigue resistance.
* **Gears and Sprockets:** Medium to heavy-duty gears, pinions, and sprockets that are through-hardened or case-hardened.
* **Forged Components:** Connecting rods, lever arms, yoke arms, and other high-strength forged parts.
* **High-Strength Fasteners:** Bolts, studs, and pins requiring Grade 8 or higher strength levels.
* **Agricultural and Construction Equipment:** High-wear components like pins, bushings, spindles, and cutting edges.
* **General Machinery Parts:** High-strength brackets, hydraulic components, and structural members.
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### **4. Important Distinctions & Considerations**
* **Not a Free-Machining Steel:** Contains low sulfur and phosphorus. Machinability is lower than 11xx or 12xx series steels. Machining is typically performed in the normalized or annealed state.
* **Heat Treatment is Standard:** AISI 1526 is almost always heat treated (quenched and tempered) to achieve its designed mechanical properties. Normalizing is a common pre-machining treatment.
* **Weldability:** Can be welded with proper procedures (preheat to 150-260°C / 300-500°F, low-hydrogen electrodes, post-weld heat treatment for thick/high-restraint welds). The combination of carbon and manganese creates a hardenable HAZ, requiring control to avoid cracking.
* **Comparison to 1026/1030:** Offers vastly superior hardenability and strength, allowing larger sections to be effectively heat treated.
* **Comparison to 1524/1522:** Has higher carbon and manganese than 1522, providing higher strength and hardenability. Compared to 1524, it has slightly higher carbon, resulting in higher potential hardness.
* **Comparison to 1340:** AISI 1526 has slightly lower carbon but similar manganese, offering slightly lower maximum hardness but often better toughness and weldability. They are closely competitive grades.
* **"H" Grade Availability:** **AISI 1526H** is available for applications requiring guaranteed hardenability bands (per SAE J1268), providing predictable heat treatment response for critical components. This is the preferred choice for high-volume or safety-critical parts.
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**Disclaimer:** The information provided is based on standard industry specifications for reference. Actual properties and performance depend on specific manufacturing methods, heat treatment cycles, section size, and final part geometry. For engineering applications, always consult the certified material test report (CMTR) and relevant application standards.
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AISI 1526 Steel Composition Spec (UNS G15260) Specification
Dimensions
Size：
Diameter 20-1000 mm Length <5035 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 1526 Steel Composition Spec (UNS G15260) Properties
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Applications of AISI 1526 Steel Flange Composition Spec (UNS G15260)
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Chemical Identifiers AISI 1526 Steel Flange Composition Spec (UNS G15260)
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Packing of AISI 1526 Steel Flange Composition Spec (UNS G15260)
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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 1506 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
