AISI 1215 Steel Seamless tube

AISI 1215 Steel Seamless tube, cold drawn, 19-38 mm round Product Information -:- For detailed product information, please contact sales. -: AISI 1215 Steel Seamless tube, cold drawn, 19-38 mm round Synonyms -:- For detailed product information, please contact sales. -:

AISI 1215 Steel, cold drawn, 19-38 mm round Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: AISI 1215 Steel, Cold Drawn Round Bar (19-38 mm)** **Overview** AISI 1215 is a low-carbon, resulfurized free-machining steel supplied as a **cold drawn round bar** in the diameter range of **19-38 mm**. This grade is specifically engineered to offer an excellent balance of superior machinability, good surface finish, and improved mechanical properties compared to its hot-rolled counterpart. The cold drawing process refines the material through precision dies, resulting in tight dimensional tolerances, a bright smooth surface, and enhanced strength via strain hardening. AISI 1215 is distinguished by its very low carbon content and controlled sulfur addition, making it a premier choice for high-volume production of complex, precision parts that require excellent chip control and consistent performance in automated machining centers. **Key Features & Advantages** * **Excellent Machinability:** Formulated with optimized sulfur content to produce short, broken chips, enabling high cutting speeds, reduced tool wear, and superior surface finishes on machined components. Its machinability rating is typically around 90-95% of the AISI 1212 benchmark. * **Superior Dimensional Accuracy & Surface Quality:** Cold drawing provides excellent diameter control (per ASTM A108), improved straightness, and a bright, scale-free surface, reducing the need for secondary finishing operations. * **Enhanced Strength & Hardness:** The cold working process increases yield and tensile strength significantly over the hot-rolled condition, providing a stronger base material for machined parts. * **Good Consistency & Predictability:** Offers uniform metallurgical structure and mechanical properties, ensuring reliable performance in high-volume, automated manufacturing environments. * **Optimized for High-Production Efficiency:** The combination of free-machining characteristics and precision form makes it ideal for minimizing cycle times and total part cost in screw machine and CNC lathe applications. --- ### **1. Chemical Composition (Standard Conformance)** | Element | Standard Range (%) | Key Function | | :--- | :--- | :--- | | **Carbon (C)** | ≤ 0.09 (max) | Very low carbon content maximizes machinability and minimizes hardening during cold working and machining. | | **Manganese (Mn)** | 0.75 – 1.05 | Combines with sulfur to form manganese sulfide (MnS) inclusions for chip breaking. | | **Phosphorus (P)** | 0.04 – 0.09 | Improves machinability and chip formation characteristics. | | **Sulfur (S)** | 0.26 – 0.35 | **Primary free-machining agent.** High sulfur content ensures excellent chip-breaking performance. | | **Iron (Fe)** | Balance | Base element. | **Key International Standard Equivalents:** * **UNS:** G12150 * **AISI/SAE:** 1215 * **ASTM:** **A108** (Standard Specification for Steel Bar, Carbon and Alloy, Cold-Finished) * **DIN (Germany):** 9SMn36 / 1.0718 * **EN (Europe):** 1.0718 * **JIS (Japan):** SUM22L or SUM23 --- ### **2. Typical Physical & Mechanical Properties (Cold Drawn Condition, 19-38 mm)** | Property | Typical Value / Description | | :--- | :--- | | **Density** | 7.87 g/cm³ | | **Machinability Rating** | **~90-95%** (Relative to AISI 1212=100%) – Excellent free-machining characteristics | | **Tensile Strength** | 420 – 550 MPa (61 – 80 ksi) | | **Yield Strength (0.2% Offset)** | **350 – 480 MPa (51 – 70 ksi)** – Enhanced via cold work | | **Elongation (in 50mm)** | 12% – 22% | | **Brinell Hardness (HB)** | 140 – 190 | | **Surface Roughness (Ra)** | 1.6 – 3.2 μm (63 – 125 μin) – Bright, smooth finish | | **Diameter Tolerance** | ASTM A108 cold drawn standards | --- ### **3. Product Applications** AISI 1215 cold drawn rounds are extensively used in high-volume precision machining applications: * **Complex Screw Machine Parts:** Bushings, fittings, connectors, and small components for automotive, hydraulic, and pneumatic systems * **Fasteners & Hardware:** Nuts, bolts, set screws, and specialized fasteners * **Electrical Components:** Connector pins, terminals, and shielding parts * **Automotive Non-Structural Parts:** Fuel system fittings, sensor housings, and decorative trim components * **General Precision Machined Components:** Any part where excellent machinability and good surface finish are prioritized --- ### **4. Critical Considerations & Limitations** * **Non-Weldable:** **UNSUITABLE FOR WELDING** – High sulfur content causes severe hot cracking and embrittlement * **Anisotropic Properties:** Exhibits directional characteristics with poor transverse ductility and impact strength * **Limited Strength Applications:** Not suitable for structural, load-bearing, or safety-critical components * **Residual Stress Management:** May require stress relief for complex machining operations to prevent distortion * **Comparison to 1212:** Slightly lower machinability but better surface consistency; 1215 offers more predictable performance in certain high-speed operations **Disclaimer:** AISI 1215 Cold Drawn is a specialized manufacturing steel optimized for machining efficiency. Its use must be limited to non-structural, non-welded applications where production economics outweigh mechanical property limitations. -:- For detailed product information, please contact sales. -: AISI 1215 Steel, cold drawn, 19-38 mm round Specification Dimensions Size： Diameter 20-1000 mm Length <5009 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 1215 Steel, cold drawn, 19-38 mm round Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1215 Steel Seamless tube, cold drawn, 19-38 mm round -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1215 Steel Seamless tube, cold drawn, 19-38 mm round -:- For detailed product information, please contact sales. -:

Packing of AISI 1215 Steel Seamless 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 Seamless 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 1480 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