AISI 1080 Steel, normalized

AISI 1080 Steel, normalized at 900°C (1650°F), air cooled, 13 mm (0.5 in.) round Product Information -:- For detailed product information, please contact sales. -: AISI 1080 Steel, normalized at 900°C (1650°F), air cooled, 13 mm (0.5 in.) round Synonyms -:- For detailed product information, please contact sales. -:

AISI 1080 Steel, normalized at 900°C (1650°F), air cooled, 13 mm (0.5 in.) round Product Information -:- For detailed product information, please contact sales. -: ### **Product Data Sheet: AISI 1080 Steel, Normalized at 900°C (1650°F) - Air Cooled, 13 mm (0.5 in.) Round** #### **1. Overview** This data sheet describes **AISI 1080 carbon steel in a normalized condition**. The material has been subjected to a specific heat treatment: heated to 900°C (1650°F) and subsequently cooled in still air. This process, performed on a 13 mm (0.5 in.) diameter round bar, refines the grain structure, homogenizes the microstructure, and produces a more consistent and improved set of mechanical properties compared to the standard as-rolled condition. Normalization serves as an important intermediate or preparatory treatment, enhancing machinability, response to final hardening, and providing a reliable baseline for components that may be used in this state for certain 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 | --- #### **3. Physical & Mechanical Properties (Normalized Condition)** *Properties are for the 13 mm round after normalization at 900°C and air cooling. The relatively small diameter ensures thorough and uniform transformation.* | Property | Typical Value / Description | | :--- | :--- | | **Condition** | Normalized (Austenitized at 900°C, Air Cooled) | | **Microstructure** | **Fine, Uniform Pearlite** (with possible small amounts of proeutectoid cementite at grain boundaries) | | **Hardness** | **229 - 269 HB** (Brinell) / **~20-25 HRC** | | **Tensile Strength** | **740 - 860 MPa (107 - 125 ksi)** | | **Yield Strength (0.2% Offset)** | **415 - 515 MPa (60 - 75 ksi)** | | **Elongation (in 50 mm)** | **~ 12 - 15%** | | **Reduction in Area** | **~ 30 - 35%** | | **Grain Size** | **ASTM 7-9** (Refined and uniform due to recrystallization) | | **Machinability** | **Improved over as-rolled state.** The finer, more uniform pearlite provides more consistent cutting action and better surface finish. | | **Internal Stress** | Low. The air-cooling process minimizes residual thermal stresses compared to quenching. | | **Hardenability Response** | **Excellent and More Predictable.** The fine, homogeneous structure provides uniform austenite upon subsequent heating, leading to more consistent hardening results. | --- #### **4. Key Characteristics & Metallurgical Rationale** * **Grain Refinement:** Heating above the upper critical temperature (Ac₃) at 900°C completely austenitizes the steel, erasing the prior rolled structure. Subsequent air cooling allows for the formation of a new, finer, and more uniform pearlitic structure. * **Property Homogenization:** Normalization eliminates chemical banding and property variations inherited from the rolling process, ensuring consistency throughout the cross-section. * **Improved Ductility and Toughness:** The refined microstructure typically offers slightly better elongation and impact resistance than the coarser as-rolled structure. * **Ideal Pre-Condition for Hardening:** For parts destined for quenching and tempering, normalization is a highly recommended preparatory step. It creates a clean, uniform starting structure that leads to less distortion, more predictable transformation, and reduced risk of cracking during final hardening. * **A Service Condition for Some Applications:** For non-wear applications requiring good strength and toughness without final hardening (e.g., some structural pins, axles), normalized AISI 1080 can be a suitable final state. --- #### **5. Typical Applications** This specific normalized condition is used in two primary contexts: **1. As a Final Condition (for non-hardened parts):** * **High-strength pins and axles** requiring good toughness and uniformity. * **Non-critical machine components** like spacers, bushings (for heavy loads), and structural brackets. * **Parts subject to further case hardening** (e.g., carburizing), where a normalized core provides a good balance of strength and toughness. **2. As a Preparatory Condition (for subsequent hardening):** * **Precision tool blanks** (dies, cutters) that will be machined and then hardened. * **Critical spring stock** that requires the most uniform response to final quench and tempering. * **Forged components** that have been normalized to refine the grain structure after forging, prior to final machining and hardening. --- #### **6. Relevant International Standards & Specifications** | Standard / Aspect | Relevance | | :--- | :--- | | **Base Material Standard** | **AISI 1080 / SAE J403 / UNS G10800** | | **Heat Treatment Specification** | Often specified on drawings as: "Normalize: Heat to 900°C (1650°F), air cool." | | **ASTM A29/A29M** | Standard for the base hot-rolled bar stock prior to normalization. | | **ASTM A510** | May be referenced for general requirements on coiled or straightened product. | | **SAE J416** | Standard heat treatment practices, including normalization procedures. | | **DIN / EN Equivalent** | **1.1231 / C80W2** (Material). Normalizing is a standard option under EN 10083. | --- ### **Critical Processing & Design Considerations** 1. **Normalizing is Not Hardening:** This process does not produce a martensitic structure. The hardness (~25 HRC) is significantly lower than the quenched and tempered potential of AISI 1080 (55-65 HRC). 2. **Section Size Sensitivity:** The properties listed are specific to the **13 mm (0.5 in.) diameter**. Larger sections will cool more slowly in air, resulting in a coarser pearlite, lower strength, and lower hardness. 3. **Decarburization:** Heating to 900°C in an oxidizing atmosphere will cause surface decarburization. For critical applications, protective atmospheres or allowance for subsequent machining removal of the decarb layer is required. 4. **Final Machining:** Normalized material is an excellent state for final machining of parts that will not be hardened, or for near-net-shape machining prior to a final hardening operation. **Summary: AISI 1080 normalized at 900°C and air-cooled represents a refined and optimized version of this high-carbon steel.** For a 13 mm round, it delivers a combination of **good strength, improved toughness, and excellent microstructural uniformity.** It serves either as a capable final material for high-strength structural applications or, more commonly, as the perfect **intermediate "conditioned" state** to ensure the success and consistency of a subsequent quenching operation that will unlock the steel's legendary hardness and wear resistance. -:- For detailed product information, please contact sales. -: AISI 1080 Steel, normalized at 900°C (1650°F), air cooled, 13 mm (0.5 in.) round Specification Dimensions Size： Diameter 20-1000 mm Length <4877 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, normalized at 900°C (1650°F), air cooled, 13 mm (0.5 in.) round Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1080 Steel, normalized at 900°C (1650°F), air cooled, 13 mm (0.5 in.) round -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1080 Steel, normalized at 900°C (1650°F), air cooled, 13 mm (0.5 in.) round -:- For detailed product information, please contact sales. -:

Packing of AISI 1080 Steel, normalized at 900°C (1650°F), air cooled, 13 mm (0.5 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 1348 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