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 1561 Steel Flange Composition Spec (UNS G15610) Product Information
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AISI 1561 Steel Flange Composition Spec (UNS G15610) Synonyms
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AISI 1561 Steel Composition Spec (UNS G15610) Product Information
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### **Product Introduction: AISI 1561 / UNS G15610 High Manganese Carbon Steel**
**1. Overview**
AISI 1561 (UNS G15610) is a high-manganese, medium-to-high carbon steel grade renowned for its exceptional combination of high strength, good wear resistance, and excellent toughness. It belongs to the family of "1561" series steels, which are characterized by their significant manganese content (typically 1.00-1.30%). This alloying composition promotes deep hardenability, allowing the steel to achieve high strength and hardness through proper heat treatment, particularly in larger cross-sections. It is widely used in applications demanding durability under heavy stress and abrasive conditions.
**2. Chemical Composition (Weight %)**
The standard chemical composition is defined as follows:
| Element | Minimum (%) | Maximum (%) |
| :-------- | :---------- | :---------- |
| Carbon (C) | 0.55 | 0.65 |
| Manganese (Mn) | 1.00 | 1.30 |
| Phosphorus (P) | - | 0.040 |
| Sulfur (S) | - | 0.050 |
| Silicon (Si) | 0.15 | 0.30 |
| Iron (Fe) | Balance | Balance |
*(Note: Minor residual elements may be present within allowable limits.)*
**3. Physical & Mechanical Properties (Typical, Annealed or As-Rolled Condition)**
Properties can vary significantly with heat treatment. The following are typical values for normalized or hot-rolled material.
* **Density:** 7.85 g/cm³ (0.284 lb/in³)
* **Melting Point:** ~1420-1460°C (2590-2660°F)
* **Modulus of Elasticity:** 200-210 GPa (29-30 x 10⁶ psi)
* **Poisson's Ratio:** 0.29
* **Thermal Conductivity:** ~48 W/m·K (at 100°C)
* **Machinability:** ~55% (compared to 100% for AISI 1212 free-machining steel). Fair to good machinability in the annealed state.
**Mechanical Properties (Heat Treated - Quenched & Tempered)**
When properly quenched and tempered, AISI 1561 achieves superior mechanical properties.
* **Tensile Strength:** 850 - 1000 MPa (123 - 145 ksi)
* **Yield Strength (0.2% Offset):** 650 - 800 MPa (94 - 116 ksi)
* **Elongation (in 50mm):** 15% - 22%
* **Reduction in Area:** 40% - 50%
* **Hardness (Brinell):** 248 - 302 HB (Approx. 25 - 32 HRC, can be higher with specific treatments)
* **Impact Toughness (Charpy V-notch):** Good to excellent, dependent on tempering temperature.
**4. Product Applications**
AISI 1561 is primarily selected for high-strength, wear-resistant components, especially where good core toughness is required. Typical applications include:
* **Automotive & Transportation:** Axle shafts, high-strength bolts, heavy-duty gears, clutch components, and forged crankshafts.
* **Agricultural Machinery:** Gears, shafts, tillage tools, and drive components subjected to shock loads.
* **Construction & Mining Equipment:** Bucket pins, track links, rollers, and other high-stress, abrasion-prone parts.
* **General Machinery:** High-strength fasteners, couplings, spindles, and other critical forged or machined parts.
* **Railroad Components:** Certain types of couplers, yokes, and other high-integrity forgings.
**5. International Standards & Cross-References**
AISI 1561 / UNS G15610 is recognized under various international standards with closely equivalent grades.
| Standard | Designation | Remarks |
| :-------------- | :-------------- | :-------------------------------------------- |
| **UNS** | G15610 | Unified Numbering System |
| **ASTM** | A510 (Grade 1561) | Standard Specification for General Requirements for Wire Rods and Coarse Round Wire. |
| **SAE / AMS** | SAE J403 (1561) | SAE Standard Chemical Composition. |
| **FED / QQ** | QQ-S-635 (Class 4, Grade F) | Federal specification for steel bars, often references 1561-type composition. |
| **DIN (Germany)** | ~1.0904 / 38Mn6 | Similar but not identical composition; European counterpart. |
| **ГОСТ (Russia)** | ~60Г | Russian grade with similar C-Mn characteristics. |
*(Note: Direct equivalents may not exist in all standards; chemical composition ranges should be compared for critical applications.)*
**6. Heat Treatment**
AISI 1561 responds well to standard heat treatments:
* **Annealing:** Performed to soften for machining.
* **Normalizing:** To refine grain structure.
* **Quenching & Tempering:** The primary strengthening process. It is typically austenitized between 830-850°C (1525-1560°F), quenched in oil (or water for maximum hardness in larger sections), and tempered at temperatures ranging from 400-650°C (750-1200°F) to achieve the desired balance of strength and toughness.
**Conclusion**
AISI 1561 (UNS G15610) is a versatile and economical high-strength alloy steel, offering an outstanding balance of toughness, wear resistance, and hardenability. Its high manganese content ensures these properties are maintained in larger-sized components. It remains a material of choice for engineers designing heavily loaded parts in the automotive, agricultural, and heavy equipment industries.
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AISI 1561 Steel Composition Spec (UNS G15610) Specification
Dimensions
Size：
Diameter 20-1000 mm Length <5052 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 1561 Steel Composition Spec (UNS G15610) Properties
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Applications of AISI 1561 Steel Flange Composition Spec (UNS G15610)
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Chemical Identifiers AISI 1561 Steel Flange Composition Spec (UNS G15610)
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Packing of AISI 1561 Steel Flange Composition Spec (UNS G15610)
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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 1523 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
