AISI 1524 Steel Wire,UNS G15240

AISI 1524 Steel Wire, Cold Drawn Bar (UNS G15240) Product Information -:- For detailed product information, please contact sales. -: AISI 1524 Steel Wire, Cold Drawn Bar (UNS G15240) Synonyms -:- For detailed product information, please contact sales. -:

AISI 1524 Steel, Cold Drawn Bar (UNS G15240) Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: AISI 1524 / UNS G15240 Cold Drawn Steel Bar** **Overview** AISI 1524 (UNS G15240) is a high-manganese, medium-low carbon alloy steel supplied in the precision **cold drawn bar** condition. This process transforms hot-rolled stock by drawing it through a die at room temperature, imparting superior dimensional accuracy, a bright, smooth surface finish, and enhanced mechanical properties via strain hardening. The high manganese content (1.35-1.65%) provides excellent hardenability, while the cold drawing process yields a ready-to-machine material with improved strength, excellent straightness, and tight tolerances. It is engineered as a premium, consistent starting material for components that require precision machining and may undergo subsequent heat treatment for final properties. **Key Features & Advantages** * **Enhanced Strength & Hardness:** The cold drawing process significantly increases yield and tensile strength through strain hardening, providing a stronger base material for machined parts compared to hot-rolled stock. * **Superior Dimensional Precision & Surface Quality:** Offers tight diameter tolerances (per ASTM A108), excellent straightness, and a smooth, bright, scale-free surface. This reduces machining allowances, improves part aesthetics, and minimizes secondary finishing. * **Excellent Hardenability & Heat Treatment Response:** The high manganese content ensures good response to subsequent through-hardening (quenching & tempering) or case hardening, allowing for the development of high strength and wear resistance in the final component. * **Good Machinability (for an alloy steel):** In the cold drawn condition, it offers fair and consistent machinability, providing predictable performance in automated machining centers and screw machines. * **Production Efficiency:** Delivers near-net-shape precision that reduces setup time, material waste, and the need for initial turning operations, streamlining the manufacturing process. --- ### **1. Chemical Composition (Standard Conformance)** | Element | Standard Range (%) | Key Function | | :--- | :--- | :--- | | **Carbon (C)** | 0.19 – 0.25 | Provides base strength and hardenability. Balanced for good machinability and strong heat treatment response. | | **Manganese (Mn)** | 1.35 – 1.65 | **Primary Alloying Element.** Significantly enhances hardenability, allowing for deeper hardening and contributing to strength and fine grain structure. | | **Phosphorus (P)** | ≤ 0.040 (max) | Residual element, kept low for good toughness. | | **Sulfur (S)** | ≤ 0.050 (max) | Residual element, kept low. **This is not a free-machining steel.** | | **Silicon (Si)** | 0.15 – 0.35 | Deoxidizer; contributes to strength. | | **Iron (Fe)** | Balance | Base element. | **Key International Standard Equivalents:** * **UNS:** G15240 * **AISI/SAE:** 1524 * **ASTM:** **A108** (Standard Specification for Steel Bar, Carbon and Alloy, Cold-Finished) * **ASTM:** A29 (General Requirements) * **DIN (Germany):** ~1.1151 / C22E (approximate, Mn differs) * **EN (Europe):** 1.1151 / C22E (similar carbon, lower Mn) --- ### **2. Typical Physical & Mechanical Properties (Cold Drawn Condition)** *Note: Properties reflect the significant strain hardening from cold drawing.* | Property | Typical Value / Description | | :--- | :--- | | **Density** | 7.85 g/cm³ (0.284 lb/in³) | | **Tensile Strength** | 600 – 750 MPa (87 – 109 ksi) | | **Yield Strength (0.2% Offset)** | **480 – 620 MPa (70 – 90 ksi)** – *Key benefit of cold work* | | **Elongation (in 50mm)** | 15% – 22% | | **Brinell Hardness (HB)** | 190 – 240 | | **Machinability (Comparison)** | Fair (~50% of AISI 1212). Consistent and predictable. | | **Surface Roughness (Ra)** | 1.6 – 3.2 μm (63 – 125 μin). Bright, smooth finish. | | **Tolerances** | Meets ASTM A108 cold-drawn tolerances. | | **Hardenability Potential** | Medium-High; responds well to subsequent quenching & tempering. | --- ### **3. Product Applications** AISI 1524 cold drawn bars are specified for precision components requiring good strength, dimensional accuracy, and a reliable foundation for heat treatment. * **Precision Shafts and Pins:** Axle shafts, spindle shafts, dowel pins, and guide rods requiring straightness and a smooth bearing surface. * **Fasteners and Studs:** High-strength bolts, studs, and pins that are machined and then heat-treated. * **Hydraulic and Pneumatic Components:** Piston rods, cylinder rods, and valve parts where surface finish and strength are critical. * **Automotive Components:** Transmission parts, steering components, and engine parts requiring precision and strength. * **Gear and Sprocket Blanks:** Stock for medium-duty gears and sprockets that will be machined and case-hardened. * **General Precision Machinery Parts:** Bushings, couplings, and fittings where the cold drawn condition provides manufacturing advantages. --- ### **4. Important Considerations** * **Residual Stress Management:** Cold drawing introduces residual surface stresses. For parts undergoing complex or asymmetric machining, **stress-relieving heat treatment prior to final machining is recommended** to prevent distortion. * **Heat Treatment After Machining:** This material is often used as-machined from the cold drawn state for its enhanced strength. For highest strength, it can be quenched and tempered after machining (requiring accounting for potential distortion). * **Machinability:** Not a free-machining grade. Requires appropriate tool grades, geometries, and coolants for optimal results. Annealing may be specified if extensive machining is needed. * **Weldability:** **Weldable with proper procedures** (preheat, low-hydrogen electrodes, post-weld heat treatment for critical applications), though the cold worked structure may be altered in the HAZ. * **Comparison to Hot-Rolled 1524:** Offers superior surface finish, tighter tolerances, higher strength, and better straightness. It is the premium choice for precision machining. * **Comparison to 1144/1141:** 1524 CD offers better weldability, through-hardenability, and toughness, but lower machinability than the free-machining grades. 1524 is a performance steel, while 1144 is a machining steel. * **"H" Grade Available:** **AISI 1524H** is available in cold drawn form for applications requiring guaranteed hardenability bands for predictable heat treatment results. --- **Disclaimer:** This information is based on typical industry specifications. Actual properties may vary. For engineering applications, consult certified material test reports and conduct appropriate testing. Cold drawn material requires proper handling to maintain dimensional stability during machining operations. -:- For detailed product information, please contact sales. -: AISI 1524 Steel, Cold Drawn Bar (UNS G15240) Specification Dimensions Size： Diameter 20-1000 mm Length <5034 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 1524 Steel, Cold Drawn Bar (UNS G15240) Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1524 Steel Wire, Cold Drawn Bar (UNS G15240) -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1524 Steel Wire, Cold Drawn Bar (UNS G15240) -:- For detailed product information, please contact sales. -:

Packing of AISI 1524 Steel Wire, Cold Drawn Bar (UNS G15240) -:- 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 Wire 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 1505 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