AISI 12L14 Steel Tube,Pipe

AISI 12L14 Steel Tube, cold drawn, 19-38 mm round Product Information -:- For detailed product information, please contact sales. -: AISI 12L14 Steel Tube, 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 Tube, cold drawn, 19-38 mm round -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 12L14 Steel Tube, cold drawn, 19-38 mm round -:- For detailed product information, please contact sales. -:

Packing of AISI 12L14 Steel Tube, 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 Tube 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