AISI 1118 Steel, as cold drawn

AISI 1118 Steel, as cold drawn, round Product Information -:- For detailed product information, please contact sales. -: AISI 1118 Steel, as cold drawn, round Synonyms -:- For detailed product information, please contact sales. -:

AISI 1118 Steel, as cold drawn, round Product Information -:- For detailed product information, please contact sales. -: ## **Product Data Sheet: AISI 1118 Steel, Cold Drawn, Round Bar** --- ### **1. Product Overview** **AISI 1118** is a low-carbon, direct-hardening steel grade distinguished by its **elevated manganese content**, which provides good through-hardenability. When processed in the **cold drawn** condition, the material is pulled through a die at room temperature, resulting in a product with **enhanced mechanical properties, superior dimensional accuracy, and an excellent surface finish** compared to its hot-rolled counterpart. This data sheet pertains to **AISI 1118 cold drawn round bar**, a versatile stock material engineered for components requiring **good strength in the "as-finished" state, precise tolerances, and the capability for subsequent heat treatment** (such as carburizing or through-hardening). It offers a favorable balance between machinability, cost, and performance for a wide range of mechanical applications. **Key Advantages of Cold Drawn AISI 1118:** * **Enhanced Strength & Surface Finish:** The cold working process increases tensile and yield strength through strain hardening while providing a bright, smooth, and scale-free surface ready for machining or plating. * **Superior Dimensional Consistency:** Cold drawing ensures tight diameter tolerances, excellent straightness, and uniform cross-section, which reduces setup time in automated machining and improves part consistency. * **Good Machinability:** Offers better and more consistent machinability than hot-rolled AISI 1118, with improved chip control and surface finish from the machine tool. * **Excellent Hardenability Base:** Retains the core chemistry (notably the 1.30-1.60% Mn) that makes it highly suitable for subsequent case hardening or through-hardening processes. --- ### **2. Chemical Composition (Standard % by Weight)** The composition is designed for hardenability and general engineering use, with controlled sulfur. | 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, allowing for deeper and more uniform hardening upon quenching. 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 free-machining grades (e.g., 1117). Low sulfur improves weldability, hot workability, and transverse ductility. | | **Iron (Fe)** | Balance | Base metal. | --- ### **3. Typical Physical & Mechanical Properties (Cold Drawn Condition)** *Properties are indicative and vary with the degree of cold reduction (drawing strain).* | Property | Typical Value (Metric) | Typical Value (Imperial) | | :--- | :--- | :--- | | **Tensile Strength** | 500 - 620 MPa | 72,500 - 90,000 psi | | **Yield Strength (0.2% Offset)** | 415 - 550 MPa | 60,000 - 80,000 psi | | **Elongation (in 50 mm)** | 12% - 20% | 12% - 20% | | **Hardness** | 163 - 207 HB | 163 - 207 HB | | **Surface Condition** | **Bright, Smooth** | Free of mill scale. | | **Dimensional Tolerance** | **Precision (Tight)** | Per standards like ASTM A108. | | **Machinability Rating** | ~ 70-75% (AISI 1212 = 100%) | Fair to Good; better than hot-rolled. | --- ### **4. International Standards & Cross-References** Cold drawn AISI 1118 conforms to standards for cold-finished carbon steel bars. | Standard System | Equivalent Designation | Applicable Specification | | :--- | :--- | :--- | | **ASTM / AISI (USA)** | AISI 1118 | **ASTM A108** (Standard for Steel Bar, Carbon, Cold-Finished) | | **SAE (USA)** | SAE 1118 | SAE J403 | | **UNS (USA)** | G11180 | - | | **DIN (Germany)** | 1.0725 | DIN EN 10277 (Bright steel) | | **JIS (Japan)** | SWRCH18A / SWCH18A* | JIS G3507 (Cold heading wire rods) | | **EN (Europe)** | 1.0725 | EN 10277 | *Note: SWRCH/SWCH grades are common equivalents, with SWCH indicating suitability for cold forging.* --- ### **5. Primary Applications** Cold drawn AISI 1118 round bar is selected for components that benefit from its as-drawn strength, precision, and hardenability. * **Shafts & Pins:** Axles, drive shafts, dowel pins, and hinge pins that may be used as-drawn or surface hardened. * **Fasteners & Studs:** Higher-strength bolts, studs, and threaded rods, often plated for corrosion resistance. * **Gear Blanks & Sprockets:** Precision blanks for gears and sprockets that will be carburized or induction hardened. * **Hydraulic & Pneumatic Components:** Cylinder rods, piston rods, and valve stems where good surface finish and strength are required. * **General Machined Parts:** Bushings, spacers, and fittings produced on CNC lathes and screw machines where the bright finish reduces pre-machining preparation. --- ### **6. Processing Notes** * **Heat Treatment:** Well-suited for **through-hardening (quench & temper)** and **case hardening (carburizing, induction hardening)**. The cold drawn state provides a good, strong core prior to treatment. Stress relieving is recommended before hardening complex parts to minimize distortion. * **Machinability:** **Fair to Good.** Cold drawing improves consistency, but the material produces long, stringy chips. Use sharp, positive-rake tools with chip breakers and adequate coolant. * **Weldability:** **Good** (for a low-carbon steel). The low sulfur and carbon content make it weldable using common arc welding processes (SMAW, GMAW, GTAW). Pre-heat is generally not required for thin sections. * **Cold Forming:** Moderate. The cold drawn condition is already work-hardened. Further cold bending or forming is possible but will increase strength and reduce ductility; annealing may be required for severe forming. * **Surface Preparation:** The bright drawn surface is ideal for subsequent plating (zinc, nickel, chrome) with minimal preparation. --- **Disclaimer:** The information provided is for reference purposes. Mechanical properties can vary with diameter and manufacturer. For critical applications, verify suitability with your material supplier. Always consult the relevant Safety Data Sheets (SDS) and material certifications before processing. -:- For detailed product information, please contact sales. -: AISI 1118 Steel, as cold drawn, round Specification Dimensions Size： Diameter 20-1000 mm Length <4943 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, as cold drawn, round Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1118 Steel, as cold drawn, round -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1118 Steel, as cold drawn, round -:- For detailed product information, please contact sales. -:

Packing of AISI 1118 Steel, as cold drawn, 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 1414 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