AISI 1080 Steel, hot rolled

AISI 1080 Steel, hot rolled, 19-32 mm (0.75-1.25 in) round Product Information -:- For detailed product information, please contact sales. -: AISI 1080 Steel, hot rolled, 19-32 mm (0.75-1.25 in) round Synonyms -:- For detailed product information, please contact sales. -:

AISI 1080 Steel, hot rolled, 19-32 mm (0.75-1.25 in) round Product Information -:- For detailed product information, please contact sales. -: ### **Product Data Sheet: AISI 1080 Steel, Hot-Rolled Round Bar (19-32 mm / 0.75-1.25 in)** #### **1. Overview** AISI 1080 (UNS G10800) in hot-rolled round bar form is a fundamental and widely available high-carbon steel. Supplied in the as-rolled condition, it features a characteristic mill-scaled surface and a pearlitic microstructure, offering a practical balance of moderate as-supplied strength, good machinability, and low cost. This product serves as the essential raw material for a vast array of components that will be further processed—typically forged, machined, and most critically, heat-treated—to achieve their final high strength, hardness, and wear resistance. The 19-32 mm (0.75-1.25 in) diameter range is one of the most versatile and commonly used sizes for industrial applications. --- #### **2. Chemical Composition (AISI/SAE Standard)** | Element | Content (%) | | :--- | :--- | | **Carbon (C)** | **0.75 - 0.88** | | **Manganese (Mn)** | 0.60 - 0.90 | | **Phosphorus (P)** | ≤ 0.040 | | **Sulfur (S)** | ≤ 0.050 | | **Silicon (Si)** | 0.15 - 0.35 | | **Iron (Fe)** | Balance | **Key Note:** The carbon content is at the high end of the standard carbon steel range, which is the primary driver of its exceptional hardenability and final performance potential. --- #### **3. Typical Physical & Mechanical Properties (As-Hot Rolled)** *Properties are for the "black," as-rolled state prior to any further processing or heat treatment.* | Property | Typical Value / Description | | :--- | :--- | | **Condition** | Hot-Rolled (Pearlitic Microstructure) | | **Density** | 7.85 g/cm³ (0.284 lb/in³) | | **Modulus of Elasticity** | 190-210 GPa (27.5-30.5 x 10⁶ psi) | | **Tensile Strength** | **670 - 820 MPa (97 - 119 ksi)** | | **Yield Strength (0.2% Offset)** | **380 - 480 MPa (55 - 70 ksi)** | | **Elongation (in 50 mm)** | **~ 10 - 12%** | | **Reduction in Area** | **~ 25 - 30%** | | **Hardness** | **200 - 250 HB** (Brinell) | | **Machinability** | **Fair (~50% of AISI 1212).** Suitable for roughing and turning operations. Machinability significantly improves if the material is normalized or annealed before detailed machining. | | **Surface Finish** | Standard hot-rolled finish with adherent mill scale. | | **Dimensional Tolerance** | Commercial hot-rolled tolerances as per standards like ASTM A29. | --- #### **4. Key Characteristics & Heat Treatment Response** * **Exceptional Hardenability:** This is the defining characteristic of AISI 1080. It responds vigorously to quenching (in oil or water) and tempering, achieving very high hardness levels (up to 60-65 HRC) and outstanding wear resistance. Its through-hardening capability is superior to lower-carbon grades. * **High Strength & Elastic Limit Potential:** After proper quenching and tempering (e.g., to a "spring temper" of ~45-52 HRC), it develops one of the highest yield strengths available in standard carbon steels. * **Moderate As-Rolled Ductility:** Provides enough formability for hot forging, bending, or straightening operations. * **Very Poor Weldability:** **Generally not recommended for welding.** The high carbon content makes it extremely susceptible to cracking in the heat-affected zone. If welding is unavoidable, it requires stringent preheating (400-450°C / 750-850°F), controlled interpass temperature, and immediate post-weld stress relief. * **Final Properties are Dictated by Heat Treatment:** The as-rolled bar is merely a starting point; the steel's full potential is unlocked only through controlled thermal processing. --- #### **5. Primary Product Applications** AISI 1080 hot-rolled round bar is the go-to material for manufacturing high-strength, wear-critical components across diverse industries. * **Springs (Primary Application):** The premier material for **heavy-duty leaf springs** (truck, railway), **large coil springs**, and **high-stress torsion bars**. * **Forging Stock:** Ideal raw material for forging **hand tools** (wrenches, hammers, pry bars), **agricultural tools** (plow shares, cultivator teeth), and **automotive components**. * **Cutting Tools & Blades:** Base material for **industrial shear blades, knives, scrapers, and mower blades**. * **Wear Parts:** Components subject to severe abrasion: **axles, rollers, mill pins, chain links, and grader blades**. * **Shafts & Pins:** For applications requiring a combination of strength and wear resistance, such as **pivot pins, mandrels, and non-precision shafts**. --- #### **6. Relevant International & Industry Standards** | Standard System | Standard Designation | Title / Scope | | :--- | :--- | :--- | | **AISI / SAE / UNS (USA)** | **1080, SAE J403, UNS G10800** | Standard Grade Designation | | **ASTM (USA)** | **ASTM A29/A29M** | Standard Specification for Steel Bars, Carbon and Alloy, Hot-Wrought | | **ASTM (USA)** | **ASTM A576** | Specification for Steel Bars, Carbon, Hot-Wrought, Special Quality (Grade 1080) | | **ASTM (USA)** | **ASTM A689** | Specification for Carbon and Alloy Steel Bars for Springs | | **DIN / EN (Germany/EU)** | **1.1231 / C80W2** | EN 10083-2: Steels for quenching and tempering. The most common direct equivalent. | | **JIS (Japan)** | **SWRH82A / SWRH82B** | High Carbon Steel Wire Rods (similar composition). For springs: **SUP3, SUP4** (JIS G4801). | | **GB (China)** | **80#** | Quality Carbon Structural Steel (GB/T 699). **65Mn** is a widely used spring steel alternative with similar performance. | --- ### **Manufacturing Pathway & Selection Guide** 1. **Material Selection:** Choose AISI 1080 hot-rolled bar when the final component requires **very high hardness, strength, or spring properties**. 2. **Forming:** Shape the component via **hot forging, machining, or hot bending**. 3. **Heat Treatment (Critical for Performance):** * **Austenitize:** Heat uniformly to ~790-815°C (1450-1500°F). * **Quench:** Rapidly cool in **oil** (for better control and less distortion) or **water** (for maximum hardness on simple shapes). * **Temper:** **Immediately** reheat to a selected temperature (e.g., 200-500°C / 400-930°F) to achieve the desired balance of hardness and toughness. 4. **Finishing:** Final grinding, shot peening (for springs), or surface treatment. **Summary:** AISI 1080 hot-rolled round bar is a classic, high-performance carbon steel in its most basic and economical form. Its value lies not in its as-delivered state, but in its exceptional **transformational potential** through skilled heat treatment. It is the industry-standard choice for the most demanding spring and wear applications, providing an optimal balance of performance and cost for manufacturers with in-house or access to professional heat-treating capabilities. -:- For detailed product information, please contact sales. -: AISI 1080 Steel, hot rolled, 19-32 mm (0.75-1.25 in) round Specification Dimensions Size： Diameter 20-1000 mm Length <4874 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 1080 Steel, hot rolled, 19-32 mm (0.75-1.25 in) round Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1080 Steel, hot rolled, 19-32 mm (0.75-1.25 in) round -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1080 Steel, hot rolled, 19-32 mm (0.75-1.25 in) round -:- For detailed product information, please contact sales. -:

Packing of AISI 1080 Steel, hot rolled, 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 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 1345 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