AISI 1117 Steel, as rolled

AISI 1117 Steel, as rolled Product Information -:- For detailed product information, please contact sales. -: AISI 1117 Steel, as rolled Synonyms -:- For detailed product information, please contact sales. -:

AISI 1117 Steel, as rolled Product Information -:- For detailed product information, please contact sales. -: ### **Product Data Sheet: AISI 1117 Steel, As-Rolled Condition** #### **1. Overview** AISI 1117 in the as-rolled condition is a low-carbon, **manganese-sulfurized free-machining steel** supplied directly after hot rolling and air cooling. This is the most economical and common supply form for this versatile grade. Characterized by a dark, scaled surface and a ferritic-pearlitic microstructure, it provides the foundational free-machining properties at the lowest initial cost. The elevated manganese content ensures optimal formation of benign manganese sulfide (MnS) inclusions, which are key to its excellent machinability. As-rolled AISI 1117 is primarily used as a raw material for components that will be fully machined or forged, and it serves as the standard feedstock for producing cold-drawn bars and wire. --- #### **2. Chemical Composition (AISI/SAE Standard)** | Element | Content (%) | | :--- | :--- | | **Carbon (C)** | 0.14 - 0.20 | | **Manganese (Mn)** | **1.00 - 1.30** | | **Phosphorus (P)** | ≤ 0.040 | | **Sulfur (S)** | **0.08 - 0.13** | | **Iron (Fe)** | Balance | **Key Distinction:** The specific combination of **manganese (1.00-1.30%)** and **sulfur (0.08-0.13%)** defines this grade. The high manganese-to-sulfur ratio promotes the formation of type I (globular) MnS inclusions, which provide excellent machinability while maintaining better transverse ductility and formability than grades with higher sulfur or phosphorus (e.g., 1116, 12L14). --- #### **3. Typical Physical & Mechanical Properties (As-Rolled)** *Properties are for the material after hot rolling and natural air cooling, with mill scale present.* | Property | Typical Value / Description | | :--- | :--- | | **Condition** | Hot-Rolled & Air-Cooled (Mill Condition) | | **Microstructure** | Ferrite + Pearlite (with globular MnS inclusions) | | **Tensile Strength** | **420 - 550 MPa (61 - 80 ksi)** | | **Yield Strength (0.2% Offset)** | **240 - 345 MPa (35 - 50 ksi)** | | **Elongation (in 50 mm)** | **~ 25 - 35%** | | **Reduction in Area** | **~ 45 - 55%** | | **Hardness** | **~ 130 - 170 HB** | | **Machinability** | **Excellent (~130-150% of AISI 1212).** The MnS inclusions act as internal chip breakers and lubricants, enabling high cutting speeds, good surface finishes, and long tool life. | | **Surface Finish** | Characteristic black oxide mill scale. This layer must be removed for most finishing operations or welding. | | **Cold Formability** | **Good.** The low carbon content and controlled inclusion morphology allow for better bending, heading, and forging than more heavily resulfurized grades. | | **Weldability** | **Poor.** The sulfur content increases the risk of **hot cracking (solidification cracking)** in the weld metal and heat-affected zone. Welding is **not recommended** for critical applications. | | **Hardenability** | **Very Low.** Not suitable for through-hardening (quenching & tempering). It is an **excellent and widely used grade for case hardening (carburizing or carbonitriding)**. | --- #### **4. Key Characteristics & Metallurgical Behavior** * **Cost-Effective Machinability:** The as-rolled form delivers the essential free-machining benefits of AISI 1117 at the lowest purchase price, ideal for high-volume production where the entire surface will be machined away. * **Scale and Decarburization:** The hot-rolling process results in a surface oxide layer (scale) and a thin decarburized zone. For precision parts, this layer must be fully removed during machining. * **Foundation for Further Processing:** This is the standard starting condition for manufacturing cold-drawn bars, cold-headed fasteners, and forged parts. It is also the typical stock issued for machining before case hardening. * **Consistent Response to Heat Treatment:** As a case hardening steel, it provides a predictable and uniform response to carburizing, resulting in a hard, wear-resistant case over a tough, ductile core. --- #### **5. Primary Product Applications (As a Raw Material)** As-rolled AISI 1117 is used as feedstock for a wide range of manufacturing processes. * **Machining Stock for Case Hardened Parts:** The most common application. Used for **gears, shafts, pins, camshafts, and other components** that are machined and then carburized. * **Forging Stock:** Suitable for **hot forging** into various shapes that will subsequently be machined and heat-treated. * **Feedstock for Cold Drawing & Heading:** The primary material for producing cold-drawn bars and wire, as well as for **cold heading** of bolts, screws, and other fasteners. * **General Machined Components:** For parts that are fully machined from bar stock where the as-rolled dimensions are sufficient and the scale is removed during processing. --- #### **6. Relevant International & Industry Standards** As-rolled product is typically supplied to general material standards. | Standard System | Standard Designation | Title / Scope | | :--- | :--- | :--- | | **AISI / SAE / UNS (USA)** | **1117, SAE J403, UNS G11170** | Standard Grade Designation | | **ASTM (USA)** | **ASTM A29/A29M** | Specification for Steel Bars, Carbon and Alloy, Hot-Wrought (Common procurement standard) | | **ASTM (USA)** | **ASTM A576** | Specification for Steel Bars, Carbon, Hot-Wrought, Special Quality | | **DIN / EN (Germany/EU)** | **1.0715 / 11SMn30** | EN 10087: Free-cutting steels. A direct equivalent. | | **JIS (Japan)** | **SUM22** | Free Cutting Steel (JIS G4804). A closely related grade. | | **GB (China)** | **Y15** | Free-Cutting Steel (GB/T 8731). | --- ### **Typical Manufacturing Sequence** 1. **Procurement:** Purchase AISI 1117 in as-rolled bars or coils. 2. **Pre-Processing:** Remove scale via **shot blasting, pickling, or turning** prior to precision machining, forming, or cold drawing. 3. **Forming:** Shape the component via **machining, hot forging, or cold forming (heading, extrusion)**. 4. **Heat Treatment (If Required):** For wear applications: **Carburize → Quench → Low-Temperature Temper**. 5. **Finishing:** Final grinding, plating, or assembly. **Weldability Note:** Welding is **strongly discouraged**. Design assemblies to use mechanical fastening. If welding is unavoidable, use low-hydrogen electrodes, high preheat, and minimize heat input. **Summary:** **AISI 1117 in the as-rolled condition is the fundamental, cost-effective form of this high-performance free-machining and case hardening steel.** It is the **industry-standard raw material** for manufacturing durable, wear-resistant components via machining and carburizing. Its value lies in providing **excellent machinability, consistent heat treatment response, and good formability** at a competitive price. For manufacturers of gears, shafts, and fasteners, as-rolled AISI 1117 represents a reliable and versatile starting point for a wide array of high-value components. -:- For detailed product information, please contact sales. -: AISI 1117 Steel, as rolled Specification Dimensions Size： Diameter 20-1000 mm Length <4927 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, as rolled Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1117 Steel, as rolled -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1117 Steel, as rolled -:- For detailed product information, please contact sales. -:

Packing of AISI 1117 Steel, as rolled -:- 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 1398 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