AISI 1526 Steel,UNS G15260

AISI 1526 Steel Composition Spec (UNS G15260) Product Information -:- For detailed product information, please contact sales. -: AISI 1526 Steel Composition Spec (UNS G15260) Synonyms -:- For detailed product information, please contact sales. -:

AISI 1526 Steel Composition Spec (UNS G15260) Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: AISI 1526 Steel Composition Specification (UNS G15260)** **Overview** AISI 1526 (UNS G15260) is a standardized **medium-carbon, high-manganese steel** defined by its specific chemical composition. It is a prominent member of the "15xx" series of **manganese alloy steels**, characterized by a significantly elevated manganese content (typically 1.20-1.50%) which provides substantially enhanced hardenability and strength over plain carbon steels of similar carbon content, such as 1026 or 1030. This grade is engineered for applications requiring a robust combination of strength, toughness, and good response to heat treatment, serving as a versatile and cost-effective engineering steel for stressed components in automotive, agricultural, and general machinery sectors. **Key Features & Characteristics** * **Enhanced Hardenability & Strength:** The high manganese content is the defining feature, providing deep and uniform hardenability. This allows the steel to be effectively through-hardened (quenched and tempered) in larger cross-sections, achieving high tensile and yield strength with good core properties. * **Good Toughness & Wear Resistance:** When properly heat treated, it offers an excellent balance of strength and impact resistance. The fine-grained structure promoted by manganese also contributes to good wear resistance in service. * **Good Forgeability and Weldability (with precautions):** Suitable for hot forging into complex shapes. It can be welded using established procedures, though preheat and post-weld heat treatment are recommended for thicker sections to maintain toughness in the heat-affected zone (HAZ). * **Economical Alloy Alternative:** Provides a more cost-effective performance upgrade compared to chromium-molybdenum alloy steels (e.g., 41xx series) for many applications where superior hardenability and moderate-to-high strength are the primary requirements. * **General Purpose Engineering Steel:** A reliable and widely used material for components that require dependable performance under stress and fatigue loading. --- ### **1. Chemical Composition (Standard Conformance)** | Element | Standard Range (%) | Key Function | | :--- | :--- | :--- | | **Carbon (C)** | 0.22 – 0.29 | Provides core strength and hardenability. This medium-carbon level ensures good strength potential while maintaining reasonable ductility and weldability. | | **Manganese (Mn)** | 1.20 – 1.50 | **Primary Alloying Element.** Dramatically increases hardenability, allowing for effective through-hardening of substantial sections. Also contributes significantly to strength and promotes a fine grain structure. | | **Phosphorus (P)** | ≤ 0.040 (max) | Residual element, kept very low to ensure good toughness, particularly in the transverse direction. | | **Sulfur (S)** | ≤ 0.050 (max) | Residual element, kept low. **This is not a free-machining grade.** Ensures better ductility and weldability compared to resulfurized steels. | | **Silicon (Si)** | 0.15 – 0.35 | Acts as a deoxidizer during steelmaking; contributes to strength. | | **Iron (Fe)** | Balance | Base element. | **Key International Standard Equivalents:** * **UNS:** G15260 * **AISI/SAE:** 1526 * **ASTM:** A29 (Standard Specification for Steel Bars, Carbon and Alloy, Hot-Wrought and Cold-Finished) * **ASTM:** A519 (for mechanical tubing) * **DIN (Germany):** ~1.1158 / 38Mn6 (Approximate analogue; carbon and manganese ranges are similar) * **EN (Europe):** 1.1158 / 38Mn6 * **JIS (Japan):** SMn438 (Similar, JIS G4052) --- ### **2. Typical Physical & Mechanical Properties (Condition Dependent)** *Properties are highly dependent on final heat treatment. The as-rolled or normalized condition is typically for machining, while quenching & tempering develops final service properties.* | Property / Condition | Normalized/Hot-Rolled | Quenched & Tempered (Example) | | :--- | :--- | :--- | | **Density** | 7.85 g/cm³ | 7.85 g/cm³ | | **Tensile Strength** | 580 – 730 MPa | 950 – 1250 MPa | | **Yield Strength (0.2% Offset)** | 350 – 500 MPa | 800 – 1100 MPa | | **Elongation (in 50mm)** | 18% – 25% | 12% – 18% | | **Reduction of Area** | 40% – 55% | 35% – 50% | | **Brinell Hardness (HB)** | 180 – 230 | 300 – 400 (HRC 32-42) | | **Machinability (Normalized)** | Fair (~50% of AISI 1212) | Poor | | **Impact Toughness** | Good | Good (with proper tempering) | | **Hardenability (Jominy)** | Medium-High. Suitable for through-hardening sections up to ~50-75mm (2-3 in) with oil quenching. | | --- ### **3. Product Applications** AISI 1526 is selected for medium-to-high stress components that benefit from its reliable hardenability and good strength-toughness balance. * **High-Stress Shafting and Axles:** Drive shafts, axle shafts, crankshafts, and transmission shafts that are through-hardened for strength and fatigue resistance. * **Gears and Sprockets:** Medium to heavy-duty gears, pinions, and sprockets that are through-hardened or case-hardened. * **Forged Components:** Connecting rods, lever arms, yoke arms, and other high-strength forged parts. * **High-Strength Fasteners:** Bolts, studs, and pins requiring Grade 8 or higher strength levels. * **Agricultural and Construction Equipment:** High-wear components like pins, bushings, spindles, and cutting edges. * **General Machinery Parts:** High-strength brackets, hydraulic components, and structural members. --- ### **4. Important Distinctions & Considerations** * **Not a Free-Machining Steel:** Contains low sulfur and phosphorus. Machinability is lower than 11xx or 12xx series steels. Machining is typically performed in the normalized or annealed state. * **Heat Treatment is Standard:** AISI 1526 is almost always heat treated (quenched and tempered) to achieve its designed mechanical properties. Normalizing is a common pre-machining treatment. * **Weldability:** Can be welded with proper procedures (preheat to 150-260°C / 300-500°F, low-hydrogen electrodes, post-weld heat treatment for thick/high-restraint welds). The combination of carbon and manganese creates a hardenable HAZ, requiring control to avoid cracking. * **Comparison to 1026/1030:** Offers vastly superior hardenability and strength, allowing larger sections to be effectively heat treated. * **Comparison to 1524/1522:** Has higher carbon and manganese than 1522, providing higher strength and hardenability. Compared to 1524, it has slightly higher carbon, resulting in higher potential hardness. * **Comparison to 1340:** AISI 1526 has slightly lower carbon but similar manganese, offering slightly lower maximum hardness but often better toughness and weldability. They are closely competitive grades. * **"H" Grade Availability:** **AISI 1526H** is available for applications requiring guaranteed hardenability bands (per SAE J1268), providing predictable heat treatment response for critical components. This is the preferred choice for high-volume or safety-critical parts. --- **Disclaimer:** The information provided is based on standard industry specifications for reference. Actual properties and performance depend on specific manufacturing methods, heat treatment cycles, section size, and final part geometry. For engineering applications, always consult the certified material test report (CMTR) and relevant application standards. -:- For detailed product information, please contact sales. -: AISI 1526 Steel Composition Spec (UNS G15260) Specification Dimensions Size： Diameter 20-1000 mm Length <5035 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 1526 Steel Composition Spec (UNS G15260) Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1526 Steel Composition Spec (UNS G15260) -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1526 Steel Composition Spec (UNS G15260) -:- For detailed product information, please contact sales. -:

Packing of AISI 1526 Steel Composition Spec (UNS G15260) -:- 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 1506 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