AISI 1116 Steel, hot rolled

AISI 1116 Steel, hot rolled Product Information -:- For detailed product information, please contact sales. -: AISI 1116 Steel, hot rolled Synonyms -:- For detailed product information, please contact sales. -:

AISI 1116 Steel, hot rolled Product Information -:- For detailed product information, please contact sales. -: ### **Product Data Sheet: AISI 1116 Steel, Hot-Rolled** #### **1. Overview** AISI 1116 in the hot-rolled condition is a low-carbon, **re-phosphorized and re-sulfurized free-machining steel**. Supplied with a characteristic mill-scaled surface, this product form offers the most cost-effective entry point for acquiring this highly machinable grade. The deliberate additions of sulfur and phosphorus create a microstructure that promotes excellent chip-breaking during machining, significantly improving productivity and tool life. While lacking the dimensional precision and surface finish of cold-drawn material, hot-rolled AISI 1116 provides the essential free-machining characteristics for applications where the final shape and surface are achieved entirely through subsequent machining operations. --- #### **2. Chemical Composition (AISI/SAE Standard)** | Element | Content (%) | | :--- | :--- | | **Carbon (C)** | 0.14 - 0.20 | | **Manganese (Mn)** | 1.00 - 1.30 | | **Phosphorus (P)** | **0.07 - 0.12** | | **Sulfur (S)** | **0.16 - 0.23** | | **Iron (Fe)** | Balance | **Key Distinction:** The specified ranges for both **phosphorus (P)** and **sulfur (S)** define this as a dual-enhanced free-machining steel. This chemistry provides superior machinability compared to non-resulfurized grades like 1018, but typically less than leaded grades like 12L14. --- #### **3. Typical Physical & Mechanical Properties (As-Hot Rolled)** *Properties are for the "black," as-rolled state with mill scale.* | Property | Typical Value / Description | | :--- | :--- | | **Condition** | Hot-Rolled | | **Tensile Strength** | **420 - 550 MPa (61 - 80 ksi)** | | **Yield Strength (0.2% Offset)** | **240 - 345 MPa (35 - 50 ksi)** | | **Elongation (in 50 mm)** | **~ 18 - 25%** | | **Hardness** | **~ 130 - 170 HB** | | **Machinability** | **Excellent (~130-145% of AISI 1212).** The combination of sulfur (forming soft MnS inclusions) and phosphorus (strengthening the matrix) provides outstanding chip-breaking action, enabling high cutting speeds and good surface finish. | | **Surface Finish** | Standard hot-rolled finish with adherent mill scale. This scale must be removed (via machining, pickling, or abrasive blasting) for functional surfaces or further processing. | | **Dimensional Tolerance** | Commercial hot-rolled tolerances. Less precise than cold-drawn product. | | **Cold Formability** | **Fair.** The higher manganese and phosphorus content increase strength but reduce ductility compared to basic low-carbon steels. Suitable for light forming. | | **Weldability** | **Extremely Poor.** The high sulfur and phosphorus content make it **highly susceptible to hot cracking (solidification cracking)**. **Welding is not recommended** and should be avoided in design. | | **Hardenability** | **Very Low.** Not suitable for through-hardening. Can be case hardened (e.g., carburized) if a wear-resistant surface is needed. | --- #### **4. Key Characteristics & Metallurgical Behavior** * **Economical Free-Machining Feedstock:** The hot-rolled form provides the beneficial machining additives at the lowest possible raw material cost. * **Chip-Breaking Structure:** Manganese sulfide inclusions act as internal stress risers and lubricants, producing short, broken chips that reduce cutting forces, heat, and tool wear. * **Compromised Ductility and Weldability:** The deliberate additions that aid machinability (S, P) significantly reduce the material's ductility and make it essentially unweldable for any critical application. * **Scale and Decarburization:** The hot-rolling process leaves a surface oxide layer (scale) and may cause a thin layer of decarburization, which must be machined away in finished parts. --- #### **5. Primary Product Applications** This product is used as a raw material for high-volume machining of components where final cost and machinability are prioritized over as-supplied precision and surface quality. * **Screw Machine & CNC Parts:** **Bushings, spacers, shafts, fittings, and fasteners** produced in high volume on automatic screw machines and CNC lathes, where the entire surface is machined. * **Automotive Non-Structural Components:** Various **brackets, linkage parts, sensor bodies, and hydraulic fittings** that are fully machined from bar stock. * **General Machined Components:** Parts where the starting condition's dimensional tolerance is not critical, as final dimensions are achieved through machining. * **Stock for Cold Drawing:** Often used as the starting feedstock for producing cold-drawn AISI 1116 bars and wire. --- #### **6. Relevant International & Industry Standards** | Standard System | Standard Designation | Title / Scope | | :--- | :--- | :--- | | **AISI / SAE / UNS (USA)** | **1116, SAE J403, UNS G11160** | Standard Free-Machining Steel Grade | | **ASTM (USA)** | **ASTM A29/A29M** | Specification for Steel Bars, Carbon and Alloy, Hot-Wrought | | **ASTM (USA)** | **ASTM A576** | Specification for Steel Bars, Carbon, Hot-Wrought, Special Quality | | **DIN / EN (Germany/EU)** | **1.0718 / 10S20** | EN 10087: Free-cutting steels. A close equivalent. | | **JIS (Japan)** | **SUM22** or **SUM22L** | Free Cutting Steel (Closest common equivalent). | | **GB (China)** | **Y20** | Free-Cutting Steel (GB/T 8731). | --- ### **Manufacturing & Selection Guide** 1. **Material Selection:** Choose hot-rolled AISI 1116 for **high-volume machining jobs** where the entire part profile is machined from the bar, minimizing the cost impact of the mill scale, and where welding is not required. 2. **First Processing Step:** Remove mill scale via **turning, pickling, or abrasive blasting** before precision machining or any forming operation. 3. **Fabrication:** Excellently suited for **high-speed turning, drilling, tapping, and milling**. Capable of **light cold forming** prior to machining. 4. **Heat Treatment:** Generally not performed for through-hardening. Can be **carburized** to create a hard, wear-resistant surface on selected areas. 5. **Joining:** **Must use mechanical fastening** (threads, pins, press fits). **Fusion welding is prohibited** for reliable assemblies. **Weldability Warning:** **This steel is NOT weldable.** The high sulfur and phosphorus will cause cracks in the weld and heat-affected zone. Designs must incorporate alternative joining methods. **Summary:** **AISI 1116 hot-rolled bar is an economical, high-machinability steel designed for production efficiency in parts that are fully machined from bar stock.** It delivers **excellent chip-breaking characteristics and good machining surface finishes at a low initial material cost**. Its value is realized in high-volume production environments where reducing machining cycle time and extending tool life directly lower the final part cost. While unsuitable for welding or high-strength applications, it remains a fundamental material in the inventory of shops specializing in the production of precision-machined components. -:- For detailed product information, please contact sales. -: AISI 1116 Steel, hot rolled Specification Dimensions Size： Diameter 20-1000 mm Length <4925 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 1116 Steel, hot rolled Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1116 Steel, hot rolled -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1116 Steel, hot rolled -:- For detailed product information, please contact sales. -:

Packing of AISI 1116 Steel, hot 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 1396 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