AISI 1118 Steel, hot rolled

AISI 1118 Steel, hot rolled, 19-32 mm (0.75-1.25 in) round Product Information -:- For detailed product information, please contact sales. -: AISI 1118 Steel, hot rolled, 19-32 mm (0.75-1.25 in) round Synonyms -:- For detailed product information, please contact sales. -:

AISI 1118 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 1118 Steel, Hot Rolled Round Bar (19-32 mm / 0.75-1.25 in)** --- ### **1. Product Overview** **AISI 1118** is a low-carbon, **manganese-enhanced steel** supplied in the standard **hot rolled** condition. It is distinct from free-machining grades (e.g., 1117) due to its **higher manganese and lower sulfur content**, which prioritize good through-hardenability and weldability over high-speed machinability. The hot rolling process shapes the steel at high temperatures, resulting in a product with a characteristic **mill scale** surface and commercial-grade dimensional tolerances. This datasheet covers **hot rolled round bar** in the **19 mm to 32 mm (0.75 in to 1.25 in)** diameter range. This form represents the most economical and readily available raw material state of AISI 1118, serving as a versatile foundation for components that will undergo significant secondary processing such as forging, machining, and—most importantly—heat treatment. **Key Characteristics of Hot Rolled AISI 1118:** * **Cost-Effective Hardenability:** Provides the most economical access to a steel with good through-hardening capability, suitable for quenching and tempering or surface hardening processes. * **Improved Weldability:** The controlled low levels of sulfur and phosphorus make it significantly more weldable than free-machining grades, suitable for fabricated assemblies. * **Good Hot Workability:** An excellent choice as feedstock for hot forging operations due to its good ductility at high temperatures. * **General Purpose Utility:** Offers a balanced combination of strength, ductility, and processability in its as-rolled state for a wide range of non-precision applications. --- ### **2. Chemical Composition (Standard % by Weight)** The composition is engineered for hardenability and general engineering use. | Element | Content (%) | Function & Implication | | :--- | :--- | :--- | | **Carbon (C)** | 0.14 - 0.20 | Provides base strength and is the primary element for response to hardening. | | **Manganese (Mn)** | 1.30 - 1.60 | **Key Element.** Significantly increases hardenability, enabling effective hardening of larger sections. Also provides solid solution strengthening. | | **Phosphorus (P)** | ≤ 0.040 | Residual element, kept low to maintain toughness. | | **Sulfur (S)** | ≤ 0.050 | **Kept Low.** This distinguishes it from 1117. Low sulfur improves weldability, hot workability, and transverse ductility but reduces machinability. | | **Iron (Fe)** | Balance | Base metal. | --- ### **3. Typical Physical & Mechanical Properties (Hot Rolled Condition)** *Properties are as-rolled and can vary with mill rolling practice and cooling conditions. The presence of mill scale is standard.* | Property | Typical Value (Metric) | Typical Value (Imperial) | | :--- | :--- | :--- | | **Tensile Strength** | 420 - 520 MPa | 61,000 - 75,000 psi | | **Yield Strength (0.2% Offset)** | 310 - 380 MPa | 45,000 - 55,000 psi | | **Elongation (in 50 mm / 2 in)** | 25% - 35% | 25% - 35% | | **Reduction of Area** | 50% - 65% | 50% - 65% | | **Hardness** | 137 - 174 HB | 137 - 174 HB | | **Surface Condition** | **Mill Scale** | Dark, oxidized layer from hot rolling. | | **Dimensional Tolerance** | **Commercial** | Governed by standards like ASTM A29. | | **Machinability Rating** | ~ 65% (AISI 1212 = 100%) | Fair; produces long, tough chips. | --- ### **4. International Standards & Cross-References** Hot rolled AISI 1118 conforms to standard specifications for hot-rolled carbon steel bars. | Standard System | Equivalent Designation | Applicable Specification | | :--- | :--- | :--- | | **ASTM / AISI (USA)** | AISI 1118 | **ASTM A29** (Standard Specification for Steel Bars, Carbon) | | **SAE (USA)** | SAE 1118 | SAE J403 | | **UNS (USA)** | G11180 | - | | **DIN (Germany)** | 1.0725 | DIN 1651-1 (Hot-rolled) / EN 10087 | | **JIS (Japan)** | SWRCH18A* | JIS G4051 (Carbon steels for machine structural use) | | **EN (Europe)** | 1.0725 | EN 10087 | *Note: SWRCH18A is a common equivalent, often specified for wire rods and forging.* --- ### **5. Primary Applications** Hot rolled AISI 1118 is selected as a versatile, economical raw material for parts requiring good core properties and destined for heat treatment or forming. * **Forging Blanks:** A primary application. Used as stock for hot forging into components like gears, levers, connecting rods, and hand tools that will be heat-treated. * **Heat-Treated Components:** Parts destined for **quenching and tempering** (e.g., shafts, bolts, pins) or **surface hardening** (induction or flame hardening of wear surfaces like sprocket teeth, cam lobes). * **General Fabrication & Welded Parts:** Used in structures, brackets, and frames where its better weldability (compared to free-machining steels) is an advantage. * **Cold Heading & Forming (Annealed):** Often supplied as hot-rolled coil or bar that is subsequently annealed for cold forming into fasteners and other components. * **Repair & General Machining:** A common stock material in maintenance shops for making replacement pins, bushings, and spacers. --- ### **6. Processing Notes** * **Heat Treatment (Primary Advantage):** Excellently suited for **through-hardening (quench & temper)**. Typical process: Austenitize at 830-870°C (1525-1600°F), quench in oil, and temper to desired hardness. Also very good for **induction or flame hardening**. * **Machining:** **Fair machinability.** The material is tougher and produces stringy chips. Use sharp tools with positive rake angles and robust chip breakers. Pre-annealing or normalizing can improve machinability for complex parts. * **Weldability:** **Good** for a low-carbon steel. Pre-heat is generally not required for thin sections. Common arc welding processes (SMAW, GMAW) are suitable with matching low-carbon filler metals. * **Surface Preparation:** **Mill scale must be removed** prior to precision machining, painting, or further processing. Methods include pickling, shot blasting, or machining. * **Cold Working:** Good ductility in the as-rolled state allows for moderate bending and forming. For severe cold forming, an annealing treatment is recommended. --- **Disclaimer:** The information provided is for general reference. Properties and surface condition can vary between heats and mills. For critical applications, testing of the specific material lot is recommended. Always consult the relevant Safety Data Sheets (SDS) and material certifications before use. -:- For detailed product information, please contact sales. -: AISI 1118 Steel, hot rolled, 19-32 mm (0.75-1.25 in) round Specification Dimensions Size： Diameter 20-1000 mm Length <4946 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 1118 Steel, hot rolled, 19-32 mm (0.75-1.25 in) round Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1118 Steel, hot rolled, 19-32 mm (0.75-1.25 in) round -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1118 Steel, hot rolled, 19-32 mm (0.75-1.25 in) round -:- For detailed product information, please contact sales. -:

Packing of AISI 1118 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 1417 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