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 1141 Steel Flange, cold drawn, 19-32 mm (0.75-1.25 in) round Product Information
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AISI 1141 Steel Flange, cold drawn, 19-32 mm (0.75-1.25 in) round Synonyms
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AISI 1141 Steel, cold drawn, 19-32 mm (0.75-1.25 in) round Product Information
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## **Product Data Sheet: AISI 1141 Steel, Cold Drawn Round Bar (19-32 mm / 0.75-1.25 in)**
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### **1. Product Overview**
**AISI 1141** is a medium-carbon, **manganese-enhanced, resulfurized free-machining steel** processed to **cold drawn** condition, offering superior dimensional accuracy, enhanced mechanical properties, and excellent machining performance. The cold drawing process refines the surface finish, increases strength through strain hardening, and provides tight geometrical tolerances.
This datasheet details specifications for **cold drawn round bar** in the **19 mm to 32 mm (0.75 in to 1.25 in)** diameter range. This product combines the **free-machining advantages of sulfur-modified steel** with the **benefits of cold working and the superior hardenability of high manganese content**. It is engineered for precision components requiring extensive machining, consistent mechanical properties, and the potential for effective subsequent heat treatment.
**Key Advantages of Cold Drawn AISI 1141:**
* **Premium Machinability & Surface Finish:** The sulfur addition ensures excellent chip formation and surface finish, while the cold-drawn condition provides a bright, scale-free surface ready for immediate machining or plating.
* **Enhanced Strength & Dimensional Precision:** Cold working significantly increases tensile and yield strength while delivering tight diameter tolerances (±0.05 mm typical), excellent straightness, and uniform roundness.
* **Superior Hardenability:** The high manganese content (1.35-1.65%) provides excellent through-hardening capability, making this material particularly suitable for components that will be quenched and tempered after machining.
* **Cost-Effective Production:** Reduces total manufacturing costs through faster machining speeds, improved material utilization (tight tolerances), and consistent performance in automated manufacturing systems.
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### **2. Chemical Composition (Standard % by Weight)**
The composition is optimized for machinability, strength, and excellent hardenability.
| Element | Content (%) | Function & Implication |
| :--- | :--- | :--- |
| **Carbon (C)** | 0.37 - 0.45 | Provides fundamental strength and enables effective response to heat treatment. |
| **Manganese (Mn)** | 1.35 - 1.65 | **Critical for Hardenability.** Provides superior through-hardening capability compared to standard resulfurized grades. Combines with sulfur to form MnS inclusions. |
| **Phosphorus (P)** | ≤ 0.040 | Residual element, controlled to maintain toughness. |
| **Sulfur (S)** | 0.08 - 0.13 | **Machinability Enhancer.** Forms manganese sulfide (MnS) inclusions that act as internal chip breakers. |
| **Iron (Fe)** | Balance | Base metal. |
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### **3. Typical Physical & Mechanical Properties (Cold Drawn Condition)**
*Properties reflect the strain-hardened state from cold drawing in this specific diameter range.*
| Property | Typical Value (Metric) | Typical Value (Imperial) |
| :--- | :--- | :--- |
| **Tensile Strength** | 620 - 760 MPa | 90,000 - 110,000 psi |
| **Yield Strength (0.2% Offset)** | 515 - 655 MPa | 75,000 - 95,000 psi |
| **Elongation (in 50 mm)** | 12% - 18% | 12% - 18% |
| **Reduction of Area** | 35% - 50% | 35% - 50% |
| **Hardness** | 197 - 255 HB | 197 - 255 HB |
| **Surface Finish (Ra)** | 0.8 - 1.6 μm | 32 - 63 μin |
| **Machinability Rating** | **~ 80-85%** (AISI 1212 = 100%) | Excellent for a medium-carbon steel. |
| **Modulus of Elasticity** | 200 GPa | 29,000 ksi |
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### **4. International Standards & Cross-References**
This cold drawn product conforms to international standards for cold-finished steel bars.
| Standard System | Equivalent Designation | Applicable Specification |
| :--- | :--- | :--- |
| **ASTM / AISI (USA)** | AISI 1141 | **ASTM A108** (Standard for Steel Bar, Carbon, Cold-Finished) |
| **SAE (USA)** | SAE 1141 | SAE J403, J412 |
| **UNS (USA)** | G11410 | - |
| **DIN (Germany)** | **1.0726** (35S20)* | DIN EN 10277 | *Note: Mn differs; German grade ~1.00% Mn |
| **BS (UK)** | **216M36** (similar) | BS 970 |
| **JIS (Japan)** | **SUM 43** (similar) | JIS G4804 |
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### **5. Primary Applications**
Cold drawn AISI 1141 in this diameter range is selected for precision components requiring excellent machining performance, dimensional consistency, and good response to heat treatment.
* **High-Strength Machined Components:** Shafts, axles, gears, and pins that will be quenched and tempered after machining.
* **Automotive Transmission Parts:** Gear blanks, synchronizer hubs, shafts, and clutch components.
* **Hydraulic System Components:** Piston rods, cylinder rods, and valve stems requiring precise dimensions.
* **Fastener Manufacturing:** High-strength bolts, studs, and special fasteners.
* **Tooling & Fixture Components:** Drill bushings, guide pins, and precision fixture elements.
* **General Machinery:** Drive shafts, rollers, and spindles where the combination of machinability and hardenability is advantageous.
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### **6. Processing & Fabrication Notes**
* **Heat Treatment:** **Excellent response to quenching and tempering.** The high manganese ensures good through-hardening. Recommended: Austenitize at 830-850°C (1525-1560°F), oil quench, temper to desired hardness (typically 28-40 HRC). **Stress relieving** before final hardening of complex parts is advised.
* **Machining:** **Excellent machinability.** The MnS inclusions provide predictable chip control. Use sharp tools with positive rake angles. The cold-drawn structure ensures uniform cutting forces.
* **Weldability:** **Poor.** The sulfur content promotes hot cracking. Welding is not recommended for critical applications. If essential, use specialized low-hydrogen procedures with pre-heat and post-weld heat treatment.
* **Cold Forming:** Limited due to work hardening. Simple bending is possible; for severe forming, anneal before forming.
* **Surface Treatments:** The bright finish is ideal for plating (zinc, nickel, chrome) with excellent adhesion.
* **Grinding:** Responds well to grinding operations. Use proper coolant to avoid thermal damage.
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### **7. Comparative Advantages**
* **vs. AISI 1140:** Superior hardenability due to higher manganese content (1.35-1.65% vs. 0.70-1.00%).
* **vs. AISI 1144:** Better transverse properties and weldability due to lower sulfur content (0.08-0.13% vs. 0.24-0.33%).
* **vs. Non-Resulfurized Grades:** Significantly better machinability, though with some anisotropy.
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**Disclaimer:** The information provided is for technical reference. Properties may vary with specific manufacturing processes. The material exhibits anisotropic mechanical properties typical of resulfurized steels. For critical applications, prototype testing and consultation with the material supplier are recommended. Always review Safety Data Sheets (SDS) and material certifications before use.
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AISI 1141 Steel, cold drawn, 19-32 mm (0.75-1.25 in) round Specification
Dimensions
Size：
Diameter 20-1000 mm Length <4976 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 1141 Steel, cold drawn, 19-32 mm (0.75-1.25 in) round Properties
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Applications of AISI 1141 Steel Flange, cold drawn, 19-32 mm (0.75-1.25 in) round
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Chemical Identifiers AISI 1141 Steel Flange, cold drawn, 19-32 mm (0.75-1.25 in) round
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Packing of AISI 1141 Steel Flange, cold drawn, 19-32 mm (0.75-1.25 in) round
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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 1447 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
