AISI 1141 Steel, cold finished

AISI 1141 Steel, cold finished round (19-38 mm) Product Information -:- For detailed product information, please contact sales. -: AISI 1141 Steel, cold finished round (19-38 mm) Synonyms -:- For detailed product information, please contact sales. -:

AISI 1141 Steel, cold finished round (19-38 mm) Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: AISI 1141 Cold Finished Steel Round Bars (19-38 mm)** **Overview** AISI 1141 is a high-quality, medium-carbon, resulfurized, and manganese-enhanced free-machining steel. This specific product is supplied as **Cold Finished (CF) Round Bars** in diameters ranging from **19 mm to 38 mm**. The cold finishing process—which typically involves drawing, turning, grinding, or polishing the hot-rolled bar—imparts superior dimensional accuracy, a smooth surface finish, enhanced mechanical properties, and excellent machinability. AISI 1141 CF Rounds are the material of choice for components requiring high-volume production with consistent quality and minimal post-machining processing. **Key Features & Advantages** * **Excellent Machinability:** The addition of sulfur forms manganese sulfide inclusions which act as chip breakers, significantly improving machinability, reducing tool wear, and allowing for higher cutting speeds. * **Good Strength and Wear Resistance:** The balanced carbon and manganese content provides good tensile strength, yield strength, and surface hardness, suitable for stressed components. * **Superior Surface Finish and Dimensional Tolerance:** Cold finishing delivers a bright, smooth surface with tight tolerances, often suitable for final parts with minimal additional finishing. * **Good Hardenability:** 1141 responds well to heat treatment (e.g., flame or induction hardening) to achieve a hard, wear-resistant surface while maintaining a tougher core. --- **1. Chemical Composition (Standard Conformance)** The typical chemical composition of AISI 1141 steel conforms to the following standards: | Element | Standard Range (%) | Key Function | | :--- | :--- | :--- | | **Carbon (C)** | 0.37 – 0.45 | Provides core strength and hardenability. | | **Manganese (Mn)** | 1.35 – 1.65 | Enhances hardenability, strength, and works with sulfur to improve machinability. | | **Phosphorus (P)** | ≤ 0.04 | Residual element (kept low). | | **Sulfur (S)** | 0.08 – 0.13 | **Free-machining additive.** Forms MnS inclusions to improve chip formation. | | **Silicon (Si)** | 0.10 – 0.30 | Deoxidizer, contributes to strength. | | **Iron (Fe)** | Balance | Base element. | **Key International Standard Equivalents:** * **UNS:** G11410 * **ASTM:** A108 (Standard Specification for Steel Bar, Carbon and Alloy, Cold-Finished) * **SAE:** J403, J412 (SAE 1141) * **DIN (Germany):** 35S20 / 1.0726 * **EN (Europe):** 35S20 * **JIS (Japan):** SUM43 --- **2. Typical Physical & Mechanical Properties (Cold Finished Condition)** *Note: Properties are for cold-finished condition (not heat-treated) and can vary slightly based on exact diameter and cold work level.* | Property | Typical Value / Description | | :--- | :--- | | **Density** | 7.85 g/cm³ (0.284 lb/in³) | | **Modulus of Elasticity** | 200 - 210 GPa (29,000 – 30,500 ksi) | | **Poisson's Ratio** | ~0.29 | | **Thermal Conductivity** | ~51.9 W/m·K (at 100°C) | | **Machinability (Comparison)** | ~85% (Based on 100% for AISI 1212) – Excellent | | **Tensile Strength** | 620 – 750 MPa (90 – 110 ksi) | | **Yield Strength (0.2% Offset)** | 415 – 550 MPa (60 – 80 ksi) | | **Elongation (in 50mm)** | 15% – 25% | | **Reduction of Area** | 35% – 50% | | **Brinell Hardness (HB)** | 187 – 241 | --- **3. Product Applications** AISI 1141 Cold Finished Rounds (19-38 mm) are extensively used in automated machining (screw machines, CNC lathes) to manufacture high-strength, wear-resistant components. Common applications include: * **Automotive Components:** Axle shafts, spindle shafts, piston rods, gear blanks, clutch components, and various pins and bolts requiring strength. * **Industrial Machinery:** Shafts, rollers, pins, dowels, hydraulic cylinder rods, and couplings. * **Tooling & Hardware:** Non-cutting hand tools, fixture parts, and high-strength fasteners. * **Agricultural Equipment:** Drive shafts, pivot pins, and other stressed parts. * **General Machined Parts:** Any component requiring a combination of good machinability, strength, and a fine surface finish straight from the bar. --- **4. Available Specifications & Processing** * **Condition:** Cold Finished (Drawn, Turned, Ground, or Polished). * **Diameter Range:** 19 mm to 38 mm (0.75" to 1.50") – This is the specified product focus. * **Straightness:** Precision straightened as per commercial or special standards. * **Surface Finish:** Bright and smooth, typical of cold-finished products. * **Tolerance:** Standard commercial tolerances as per ASTM A108 or customer-specific requirements. * **Additional Processing:** Can be supplied annealed for optimal machinability or spheroidize annealed for subsequent cold forming. **Disclaimer:** The information provided is typical and for reference purposes. Actual properties may vary based on manufacturer, specific production lot, and final processing. For critical applications, always consult the manufacturer's certified test report and relevant material standards. -:- For detailed product information, please contact sales. -: AISI 1141 Steel, cold finished round (19-38 mm) Specification Dimensions Size： Diameter 20-1000 mm Length <4980 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 finished round (19-38 mm) Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1141 Steel, cold finished round (19-38 mm) -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1141 Steel, cold finished round (19-38 mm) -:- For detailed product information, please contact sales. -:

Packing of AISI 1141 Steel, cold finished round (19-38 mm) -:- 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 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 1451 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