AISI 1141 Steel Tube,Pipe

AISI 1141 Steel Tube, cold drawn, 19-32 mm (0.75-1.25 in) round Product Information -:- For detailed product information, please contact sales. -: AISI 1141 Steel Tube, cold drawn, 19-32 mm (0.75-1.25 in) round Synonyms -:- For detailed product information, please contact sales. -:

AISI 1141 Steel, cold drawn, 19-32 mm (0.75-1.25 in) round Product Information -:- For detailed product information, please contact sales. -: ## **Product Data Sheet: AISI 1141 Steel, Cold Drawn Round Bar (19-32 mm / 0.75-1.25 in)** --- ### **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. --- ### **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. | --- ### **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 | --- ### **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 | --- ### **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. --- ### **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. --- ### **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. --- **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. -:- For detailed product information, please contact sales. -: 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 -:- For detailed product information, please contact sales. -: AISI 1141 Steel, cold drawn, 19-32 mm (0.75-1.25 in) round Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1141 Steel Tube, cold drawn, 19-32 mm (0.75-1.25 in) round -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1141 Steel Tube, cold drawn, 19-32 mm (0.75-1.25 in) round -:- For detailed product information, please contact sales. -:

Packing of AISI 1141 Steel Tube, cold drawn, 19-32 mm (0.75-1.25 in) 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 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