AISI 1524 Steel, Hot Rolled,UNS G15240

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

AISI 1524 Steel, Hot Rolled Bar (UNS G15240) Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: AISI 1524 / UNS G15240 Hot Rolled Steel Bar** **Overview** AISI 1524 (UNS G15240) is a high-manganese, medium-low carbon steel supplied in the economical **hot rolled bar** condition. As a member of the "15xx" series of manganese alloy steels, it is characterized by a significantly elevated manganese content (1.35-1.65%) which provides enhanced hardenability, strength, and toughness over standard carbon steels like 1020 or 1024. Supplied in the as-rolled state, it represents a versatile and cost-effective raw material for components that will undergo further processing such as machining, forging, and subsequent heat treatment (normalizing, quenching & tempering, or carburizing). It is a general-purpose engineering steel designed for applications requiring reliable strength and good formability. **Key Features & Advantages** * **Enhanced Hardenability & Strength:** The high manganese content significantly improves the steel's response to heat treatment, allowing for deeper and more uniform hardening compared to plain carbon steels. This results in higher achievable strength and better wear resistance in the final component. * **Good Toughness & Impact Resistance:** The manganese contributes to a fine-grained structure which, combined with the moderate carbon content, provides good inherent toughness and ductility in the as-rolled and normalized conditions. * **Excellent Forgeability:** The composition makes it very suitable for hot forging into complex shapes, with the manganese aiding in maintaining good ductility at high temperatures. * **Good Weldability (with precautions):** As a low-carbon, low-sulfur steel, it can be welded using standard arc welding processes. Proper procedures (preheat for thick sections, low-hydrogen electrodes) are recommended to maintain toughness in the heat-affected zone. * **Cost-Effective Alloy Performance:** Offers a performance upgrade over standard 10xx series carbon steels at a moderate cost, making it a popular choice for a wide range of industrial components. --- ### **1. Chemical Composition (Standard Conformance)** | Element | Standard Range (%) | Key Function | | :--- | :--- | :--- | | **Carbon (C)** | 0.19 – 0.25 | Provides base strength and hardenability. This level balances machinability, weldability, and response to heat treatment. | | **Manganese (Mn)** | 1.35 – 1.65 | **Defining Alloying Element.** Dramatically increases hardenability and contributes to strength and fine grain size. | | **Phosphorus (P)** | ≤ 0.040 (max) | Residual element, kept low to ensure good toughness, especially in transverse directions. | | **Sulfur (S)** | ≤ 0.050 (max) | Residual element, kept low. **This is not a free-machining grade.** Ensures better ductility and weldability. | | **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:** A29 (Standard Specification for Steel Bars, Carbon and Alloy, Hot-Wrought) * **ASTM:** A519 (for mechanical tubing) * **DIN (Germany):** ~1.1151 / C22E (approximate, Mn differs significantly) * **EN (Europe):** 1.1151 / C22E (similar carbon, lower Mn) * **JIS (Japan):** No direct equivalent. --- ### **2. Typical Physical & Mechanical Properties (Hot Rolled, As-Rolled Condition)** *Note: Properties are for reference in the as-rolled state. Final properties are typically developed through subsequent heat treatment.* | Property | Typical Value / Description | | :--- | :--- | | **Density** | 7.85 g/cm³ (0.284 lb/in³) | | **Tensile Strength** | 520 – 670 MPa (75 – 97 ksi) | | **Yield Strength (0.2% Offset)** | 350 – 480 MPa (51 – 70 ksi) | | **Elongation (in 50mm)** | 20% – 28% | | **Reduction of Area** | 45% – 60% | | **Brinell Hardness (HB)** | 170 – 215 | | **Machinability (Comparison)** | Fair (~55% of AISI 1212). Better than higher-carbon alloy steels. | | **Surface Condition** | Standard hot-rolled finish with mill scale. | --- ### **3. Product Applications** AISI 1524 hot rolled bars are widely used as starting stock for components requiring good strength, toughness, and response to further processing. * **Forged Components:** Connecting rods, crankshafts, lever arms, yoke arms, and other high-strength forged parts. * **Shafts and Axles:** General-purpose power transmission shafts, axle shafts, and spindles that will be heat-treated. * **Gear and Sprocket Blanks:** Stock for medium-duty gears and sprockets that will be machined and then case-hardened or through-hardened. * **High-Strength Fasteners:** Bolts, studs, and pins requiring better core properties than low-carbon steel fasteners. * **Agricultural and Construction Equipment:** Pins, bushings, cutting edges, and linkage parts. * **General Machinery Parts:** Brackets, hydraulic cylinder rods, and structural components. --- ### **4. Important Considerations** * **Not a Free-Machining Steel:** Contains low sulfur. Machining in the as-rolled state requires appropriate tooling and parameters. For extensive machining, normalizing or annealing is recommended first. * **Heat Treatment is Common:** This steel achieves its full potential through heat treatment such as normalizing (for grain refinement), quenching & tempering (for high strength), or carburizing (for hard wear surfaces with tough cores). * **Mill Scale:** The hot-rolled surface is covered with an oxide layer that must be removed by pickling, shot blasting, or machining for most finishing operations or welding. * **Comparison to 1024:** AISI 1524 has a similar carbon range but much higher manganese, giving it significantly better hardenability, strength, and impact toughness. * **Comparison to 1522:** Has slightly higher carbon and manganese, resulting in slightly higher strength and hardenability. * **"H" Grade Availability:** An **AISI 1524H** grade exists for applications requiring guaranteed hardenability bands (per SAE J1268), ensuring consistent heat treatment results for critical components. * **Cold Drawing Available:** Can be supplied as cold drawn bar for improved dimensional accuracy, surface finish, and increased strength. --- **Disclaimer:** The information provided is based on typical industry standards and is for reference purposes. Actual properties may vary based on manufacturer, production lot, and processing parameters. For critical applications, always consult certified material test reports and appropriate engineering standards. -:- For detailed product information, please contact sales. -: AISI 1524 Steel, Hot Rolled Bar (UNS G15240) Specification Dimensions Size： Diameter 20-1000 mm Length <5033 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, Hot Rolled Bar (UNS G15240) Properties -:- For detailed product information, please contact sales. -:

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

Packing of AISI 1524 Steel, Hot Rolled 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 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 1504 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