AISI 1117 Steel Rod/Bar

AISI 1117 Steel Rod, normalized at 900°C (1650°F), air cooled, round Product Information -:- For detailed product information, please contact sales. -: AISI 1117 Steel Rod, normalized at 900°C (1650°F), air cooled, round Synonyms -:- For detailed product information, please contact sales. -:

AISI 1117 Steel, normalized at 900°C (1650°F), air cooled, round Product Information -:- For detailed product information, please contact sales. -: ## **Product Data Sheet: AISI 1117 Steel, Normalized (900°C/1650°F, Air Cooled), Round Bar** --- ### **1. Product Overview** **AISI 1117, Normalized at 900°C (1650°F) and Air Cooled**, represents a specific heat-treated condition of this free-machining steel. The normalization process involves heating the steel to approximately 50-60°C (90-110°F) above its upper critical temperature (Ac₃), holding for sufficient time to achieve a uniform austenitic structure, and then cooling in still air. This treatment refines the grain structure inherited from prior hot rolling or forging, homogenizes the microstructure, and relieves internal stresses, resulting in a more uniform and predictable material with improved mechanical properties compared to the as-rolled or as-forged state. This processing route is specified for applications requiring a **balanced combination of strength, ductility, and microstructural uniformity** as a starting point for further processing or as a final condition for certain components. It is particularly beneficial for ensuring consistent response in subsequent manufacturing steps like machining or case hardening. **Key Advantages of Normalized AISI 1117:** * **Refined & Homogeneous Microstructure:** Eliminates the coarse, non-uniform grain structure from hot working, resulting in a fine, uniform ferrite-pearlite matrix. This enhances toughness and mechanical consistency. * **Relieved Internal Stresses:** Reduces residual stresses from prior manufacturing processes, minimizing the risk of distortion during subsequent machining. * **Improved Machinability Consistency:** The uniform microstructure provides more predictable and consistent machining characteristics across the entire bar and between lots compared to standard hot-rolled material. * **Optimized Base for Further Heat Treatment:** Creates an ideal, uniform starting condition for subsequent case hardening (carburizing), leading to more controlled carbon diffusion and case depth uniformity. --- ### **2. Chemical Composition (Standard % by Weight)** The base composition conforms to the standard AISI 1117 specification. | Element | Content (%) | Function & Implication | | :--- | :--- | :--- | | **Carbon (C)** | 0.14 - 0.20 | Provides core strength and ductility. Determines the volume fraction of pearlite in the normalized microstructure. | | **Manganese (Mn)** | 1.00 - 1.30 | Increases hardenability, slightly retarding the austenite-to-ferrite/pearlite transformation during air cooling, leading to a finer pearlite structure. | | **Phosphorus (P)** | ≤ 0.040 | Residual element, controlled to minimize embrittlement. | | **Sulfur (S)** | 0.08 - 0.13 | **Key Machinability Enhancer.** Forms manganese sulfide (MnS) inclusions that promote chip breaking. Note: Sulfur does not adversely affect the normalization process. | | **Iron (Fe)** | Balance | Base metal. | --- ### **3. Typical Physical & Mechanical Properties (Normalized Condition)** *Properties are indicative for this specific heat treatment. Cooling rate (air volume, bar diameter) can influence final hardness and strength.* | Property | Typical Value (Metric) | Typical Value (Imperial) | Notes | | :--- | :--- | :--- | :--- | | **Tensile Strength** | 460 - 550 MPa | 66,500 - 80,000 psi | Higher than as-rolled due to grain refinement. | | **Yield Strength (0.2% Offset)** | 345 - 415 MPa | 50,000 - 60,000 psi | Improved over the hot-rolled condition. | | **Elongation (in 50 mm)** | 20% - 28% | 20% - 28% | Good ductility is maintained. | | **Reduction of Area** | 45% - 60% | 45% - 60% | - | | **Hardness** | 149 - 183 HB | 149 - 183 HB | A fine, uniform hardness profile. | | **Microstructure** | **Fine, uniform ferrite with refined pearlite colonies.** | | The target outcome of normalization. | | **Machinability** | **Very Good** | | Consistent and predictable chip formation. | --- ### **4. International Standards & Specifications** Normalization is a standard heat treatment process applied to material conforming to common bar standards. | Standard System | Grade Designation | Applicable Base Specification | Heat Treatment Note | | :--- | :--- | :--- | :--- | | **ASTM (USA)** | 1117 | ASTM A29 / ASTM A108 | Can be supplied normalized per ASTM A29 or as a special requirement on A108. | | **SAE (USA)** | SAE 1117 | SAE J403 | - | | **UNS (USA)** | G11170 | - | - | | **DIN (Germany)** | 1.0721 (11SMn30) | DIN EN 10087 / DIN 1651 | Can be supplied to "**+N**" condition (Normalized). | | **EN (Europe)** | 11SMn30 | EN 10087 | Designation: **11SMn30+N**. | | **Common Callout** | **Normalized** | | Often specified on drawings as "Normalize at 900°C, air cool." | --- ### **5. Primary Applications** Normalized AISI 1117 is selected for components that require a reliable, uniform set of core properties prior to final machining and/or case hardening, especially where part consistency is critical. * **Gearing & Shafting:** Gear blanks, pinions, and intermediate shafts that will be carburized. Normalization ensures a uniform core structure for consistent hardening response and optimal core toughness. * **Forged Components (Post-Forging Treatment):** Critical parts that are hot forged to shape and then normalized to refine the coarse forged grain structure before machining. * **General Engineering Components:** Bolts, studs, and pins requiring better and more consistent mechanical properties than as-rolled stock, often for medium-duty applications. * **Tooling & Fixture Bases:** Jigs, fixtures, and machine components where dimensional stability and a moderate strength-to-ductility ratio are important in the "as-machined" state. * **Precision Parts:** Components where consistent machinability and minimal distortion during machining are required, and where the part may not undergo final hardening. --- ### **6. Processing & Fabrication Notes** * **Subsequent Heat Treatment:** Serves as an **excellent pre-condition for carburizing**. The fine, uniform grain structure allows for predictable and uniform carbon diffusion, potentially reducing case depth variation. It is not a through-hardening treatment. * **Machinability:** Offers **very good and consistent machinability**. The uniform fine-grained structure and stress-relieved state allow for stable cutting, good surface finishes, and predictable tool life. It is generally superior to as-rolled stock for precision work. * **Weldability:** **POOR.** The high sulfur content makes it highly susceptible to solidification (hot) cracking. Welding is not recommended and will locally destroy the normalized microstructure. * **Cold Working:** More ductile and uniform than cold-drawn material, but its primary purpose is not for severe cold forming. It can withstand moderate forming operations. * **Dimensional Stability:** Superior to as-rolled material due to stress relief, making it a better choice for parts requiring stable dimensions during machining. --- **Disclaimer:** The data provided is for general reference. The final mechanical properties are influenced by the specific bar diameter (which affects cooling rate) and the details of the normalization cycle. For performance-critical applications, consultation with the heat treater and material supplier is essential. Always review material certifications and Safety Data Sheets (SDS) prior to use. -:- For detailed product information, please contact sales. -: AISI 1117 Steel, normalized at 900°C (1650°F), air cooled, round Specification Dimensions Size： Diameter 20-1000 mm Length <4938 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 1117 Steel, normalized at 900°C (1650°F), air cooled, round Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1117 Steel Rod, normalized at 900°C (1650°F), air cooled, round -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1117 Steel Rod, normalized at 900°C (1650°F), air cooled, round -:- For detailed product information, please contact sales. -:

Packing of AISI 1117 Steel Rod, normalized at 900°C (1650°F), air cooled, 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 Rod 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 1409 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