AISI 12L14 Steel Flange

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." -:- For detailed product information, please contact sales. -: AISI 12L14 Steel Flange, cold drawn, 19-38 mm round Product Information -:- For detailed product information, please contact sales. -: AISI 12L14 Steel Flange, cold drawn, 19-38 mm round Synonyms -:- For detailed product information, please contact sales. -:

AISI 12L14 Steel, cold drawn, 19-38 mm round Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: AISI 12L14 Steel, Cold Drawn Round Bar (19-38 mm)** **Overview** AISI 12L14 is the global industry standard for **leaded free-machining steel**, supplied in its premium form as a **cold drawn round bar** in the diameter range of **19-38 mm**. This product combines the exceptional internal lubricating properties of lead with the precision, strength, and surface quality enhancements of cold drawing. It represents the ultimate choice for manufacturers seeking to **maximize productivity, achieve superior surface finishes, and minimize total part cost** in high-volume precision machining operations. The cold drawing process transforms this already superior machining steel into a consistent, ready-for-production material that sets the benchmark for automated manufacturing efficiency. **Key Features & Advantages** * **Optimal Machinability Performance:** The synergistic effect of lead (internal lubricant), sulfur (chip breaker), and cold work produces the highest practical machinability for production applications, typically rated at 180-200% of the AISI 1212 standard. This enables maximum cutting speeds, minimal tool wear, and exceptional chip control. * **Precision Dimensional Control:** Cold drawing ensures tight diameter tolerances (ASTM A108), excellent straightness, and uniform cross-sections, providing reliable performance in automated feeding systems and CNC programs. * **Superior Surface Quality:** Delivers a bright, smooth, scale-free surface finish that serves as an excellent base for machined components, often eliminating secondary finishing operations and enhancing part aesthetics. * **Enhanced Mechanical Properties:** The cold working process increases yield and tensile strength by 15-25% compared to hot-rolled material, providing stronger machined components without heat treatment. * **Production Cost Optimization:** Reduces machining time by 20-40% compared to non-leaded steels, extends tool life significantly, and minimizes scrap rates—delivering the lowest possible total cost per part in suitable high-volume applications. --- ### **1. Chemical Composition (Standard Conformance)** | Element | Standard Range (%) | Key Function | | :--- | :--- | :--- | | **Carbon (C)** | ≤ 0.15 (max) | Minimized to ensure maximum machinability and prevent work hardening. | | **Manganese (Mn)** | 0.85 – 1.15 | Optimized range to effectively combine with sulfur for chip breaking. | | **Phosphorus (P)** | 0.04 – 0.09 | Enhances chip brittleness and machinability. | | **Sulfur (S)** | 0.26 – 0.35 | **Elevated.** Primary chip-breaking agent through manganese sulfide formation. | | **Lead (Pb)** | **0.15 – 0.35** | **Critical performance element.** Provides internal lubrication at the tool-chip interface, reducing friction and heat generation. | | **Iron (Fe)** | Balance | Base element. | **Key International Standard Equivalents:** * **UNS:** G12144 * **AISI/SAE:** 12L14 * **ASTM:** **A108** (Standard Specification for Steel Bar, Carbon and Alloy, Cold-Finished) * **DIN (Germany):** 10SPb20 / 1.0711 * **EN (Europe):** 1.0711 * **JIS (Japan):** SUM24L --- ### **2. Typical Physical & Mechanical Properties (Cold Drawn Condition, 19-38 mm)** | Property | Typical Value / Description | | :--- | :--- | | **Density** | ~7.87 g/cm³ (Slightly elevated due to lead content) | | **Machinability Rating** | **~180-200%** (Relative to AISI 1212=100%) – Industry benchmark for free-machining performance | | **Tensile Strength** | 440 – 570 MPa (64 – 83 ksi) | | **Yield Strength (0.2% Offset)** | **370 – 500 MPa (54 – 73 ksi)** – Enhanced via cold work | | **Elongation (in 50mm)** | 10% – 20% *(Highly anisotropic)* | | **Brinell Hardness (HB)** | 145 – 195 | | **Surface Roughness (Ra)** | 1.6 – 3.2 μm (63 – 125 μin) – Bright, smooth finish | | **Tolerances** | Meets ASTM A108 cold-drawn precision tolerances | --- ### **3. Product Applications** AISI 12L14 cold drawn rounds are specified for the most demanding high-volume precision machining applications: * **Complex Screw Machine Components:** Precision parts for automotive fuel systems, hydraulic valves, pneumatic fittings, and medical devices requiring tight tolerances and superior finish. * **High-Volume Fasteners:** Premium bolts, nuts, set screws, and specialized fasteners where production speed and thread quality are optimized. * **Electrical & Electronic Components:** Connector pins, terminals, and shielding parts requiring burr-free machining and excellent conductivity. * **Consumer Products:** Appliance components, hardware fittings, and decorative parts where surface finish impacts product quality. * **General High-Volume Parts:** Any component where machining productivity gains justify the material premium and handling requirements. --- ### **4. Critical Considerations & Limitations** * **Health & Safety Regulations:** **CONTAINS LEAD (0.15-0.35%).** Requires **mandatory engineering controls**: local exhaust ventilation (LEV) systems during machining. Operators need proper PPE (respirators, gloves). Swarf and coolant are **hazardous waste** requiring certified disposal. * **Environmental Compliance:** Subject to RoHS, REACH, and other regulations. Use is **restricted or prohibited** in food-contact applications, potable water systems, children's products, and certain consumer electronics. * **Non-Weldable:** **ABSOLUTELY UNSUITABLE FOR WELDING.** Lead vaporization creates toxic fumes and causes severe hot cracking. * **Mechanical Limitations:** **Not for structural use.** Poor transverse ductility and impact toughness. Yield strength limited to ~500 MPa maximum. Cannot be heat-treated for strengthening. * **Thermal Restrictions:** Avoid temperatures above 250°C (480°F) to prevent lead sweating and surface degradation. * **Cost Considerations:** Higher material cost + hazardous waste disposal costs vs. non-leaded grades. Requires documented safety programs and training. * **Comparison to 1215 CD:** 12L14 offers 25-35% better machining productivity but introduces lead handling requirements. 1215 CD is the standard non-leaded alternative. **Disclaimer:** **AISI 12L14 Cold Drawn is a specialized manufacturing material with significant regulatory and safety implications.** Selection requires thorough review of production benefits versus compliance costs. It is **not an engineering material** and is unsuitable for welded, heat-treated, or structurally critical applications. Compliance with OSHA, EPA, and international regulations regarding lead handling is **mandatory**. Proper safety protocols must be established and maintained throughout the material lifecycle. -:- For detailed product information, please contact sales. -: AISI 12L14 Steel, cold drawn, 19-38 mm round Specification Dimensions Size： Diameter 20-1000 mm Length <5014 mm Size:We can customized as required Standard： Per your request or drawing We can customized as required Properties（Theoretical） Chemical Composition -:- For detailed product information, please contact sales. -: AISI 12L14 Steel, cold drawn, 19-38 mm round Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 12L14 Steel Flange, cold drawn, 19-38 mm round -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 12L14 Steel Flange, cold drawn, 19-38 mm round -:- For detailed product information, please contact sales. -:

Packing of AISI 12L14 Steel Flange, cold drawn, 19-38 mm round -:- For detailed product information, please contact sales. -: Standard Packing: -:- For detailed product information, please contact sales. -: 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 1485 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