AISI 1117 Steel, cold drawn

AISI 1117 Steel, cold drawn, 19-32 mm (0.75-1.25 in) round Product Information -:- For detailed product information, please contact sales. -: AISI 1117 Steel, cold drawn, 19-32 mm (0.75-1.25 in) round Synonyms -:- For detailed product information, please contact sales. -:

AISI 1117 Steel, cold drawn, 19-32 mm (0.75-1.25 in) round Product Information -:- For detailed product information, please contact sales. -: ### **Product Data Sheet: AISI 1117 Steel, Cold Drawn Round Bar (19-32 mm / 0.75-1.25 in)** #### **1. Overview** AISI 1117 is a low-carbon, **manganese-sulfurized free-machining steel** supplied in the cold drawn condition. This product is engineered to deliver **superior machinability, excellent surface finish, and tight dimensional tolerances** for high-volume production of precision components. The combination of increased manganese and controlled sulfur creates a favorable balance of manganese sulfide (MnS) inclusions that act as effective chip breakers. The cold drawing process enhances surface quality, improves straightness, and increases yield strength through strain hardening. AISI 1117 is a premier choice for applications demanding consistent, high-speed machining performance and reliable part dimensions. --- #### **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 elevated **manganese (1.00-1.30%)** paired with specified sulfur defines this grade. The higher manganese ensures most sulfur is bound as benign manganese sulfide (MnS) inclusions, optimizing machinability while minimizing the detrimental effects of free sulfur. This offers better machinability than 1018 and better consistency/ductility than higher-sulfur grades like 1116 or 12L14. --- #### **3. Typical Physical & Mechanical Properties (As Cold Drawn)** *Properties are for the cold drawn, work-hardened state in the 19-32 mm diameter range.* | Property | Typical Value / Description | | :--- | :--- | | **Condition** | Cold Drawn (Work Hardened) | | **Tensile Strength** | **480 - 620 MPa (70 - 90 ksi)** | | **Yield Strength (0.2% Offset)** | **415 - 550 MPa (60 - 80 ksi)** | | **Elongation (in 50 mm)** | **~ 15 - 22%** | | **Hardness** | **85 - 100 HRB** (Rockwell B) / **~ 160 - 210 HB** | | **Machinability** | **Excellent (~140-160% of AISI 1212).** The optimized MnS inclusion morphology provides excellent chip-breaking, leading to high cutting speeds, good surface finish, and extended tool life. | | **Surface Finish** | Smooth, bright, and scale-free finish with superior cleanliness compared to hot-rolled products. | | **Dimensional Tolerance** | Tight and consistent tolerances (e.g., ±0.075 mm to ±0.150 mm), ensuring precision for automated machining. | | **Cold Formability** | **Fair to Good.** Better than higher-sulfur grades like 1116 due to more controlled inclusion shape. Suitable for moderate bending and forming. | | **Weldability** | **Poor.** The sulfur content increases susceptibility to hot cracking. **Not recommended for welding.** If absolutely necessary, requires specialized low-hydrogen procedures with preheat. | | **Hardenability** | **Very Low.** Not suitable for through-hardening. An excellent candidate for **case hardening (carburizing)** to produce a hard, wear-resistant surface over a tough, machinable core. | --- #### **4. Key Characteristics & Metallurgical Behavior** * **Optimized Free-Machining Structure:** The Mn:S ratio is controlled to form globular Type I MnS inclusions, which are most effective for chip breaking while minimizing anisotropy in mechanical properties. * **Enhanced Strength from Cold Work & Manganese:** Provides higher as-supplied strength compared to lower-manganese free-cutting grades like 1108, offering better stiffness for slender turned parts. * **Precision and Consistency:** The cold drawing process ensures excellent dimensional stability, straightness, and surface quality, critical for modern CNC and screw machine applications. * **Superior Carburizing Base:** Its low core carbon, combined with good machinability, makes it one of the most popular choices for parts that are machined and then case hardened. --- #### **5. Primary Product Applications** This product is ideal for high-volume, precision machining of components, especially those destined for case hardening. * **Case Hardened Components (Primary Use):** **Gears, pinions, shafts, camshafts, bushings, and bearing races** that are machined to shape and then carburized or carbonitrided. * **High-Volume Screw Machine Parts:** **Complex shafts, fittings, connectors, and fasteners** produced on Swiss-style and multi-spindle automatics. * **Automotive Components:** **Transmission parts, valve guides, sensor housings, and linkage pins** requiring good machinability and often subsequent surface hardening. * **General Precision Machined Parts:** Any component where excellent machinability, good surface finish, and dimensional accuracy are required. --- #### **6. Relevant International & Industry Standards** | Standard System | Standard Designation | Title / Scope | | :--- | :--- | :--- | | **AISI / SAE / UNS (USA)** | **1117, SAE J403, UNS G11170** | Standard Free-Machining / Case Hardening Steel Grade | | **ASTM (USA)** | **ASTM A29/A29M** | Specification for Steel Bars, Carbon and Alloy, Hot-Wrought and Cold-Finished | | **ASTM (USA)** | **ASTM A108** | Specification for Steel Bars, Carbon, Cold-Finished, Standard Quality | | **DIN / EN (Germany/EU)** | **1.0715 / 11SMn30** | EN 10087: Free-cutting steels. A common direct equivalent. | | **JIS (Japan)** | **SUM22** | Free Cutting Steel (JIS G4804). A closely related grade. | | **GB (China)** | **Y15** | Free-Cutting Steel (GB/T 8731). | --- ### **Processing Pathway & Selection Guide** 1. **Material Selection:** Choose AISI 1117 cold drawn for **precision parts requiring excellent machinability**, especially if they will undergo **case hardening**. It is a versatile, high-performance free-machining grade. 2. **Fabrication:** Optimized for all **machining operations: turning, drilling, milling, threading, and grinding**. Suitable for **moderate cold forming**. 3. **Heat Treatment (Typical Path for Wear Parts):** Machine -> **Carburize** (~900-925°C) -> **Quench** (oil) -> **Low-Temperature Temper** (~150-200°C) -> Finish grind. 4. **Finishing:** Excellent substrate for **plating, painting, or phosphating**. The bright finish often reduces pre-plating preparation. 5. **Joining:** **Use mechanical fastening.** Avoid fusion welding. **Summary:** **AISI 1117 cold drawn round bar is a premium, versatile free-machining steel renowned for its excellent machinability and suitability for case hardening.** It delivers an optimal balance of **manufacturing efficiency (fast machining, good finish) and final performance (via surface hardening)**. Its controlled chemistry and precise cold-drawn form make it a reliable and cost-effective choice for the high-volume production of durable, wear-resistant components across the automotive, machinery, and general manufacturing industries. It is considered a benchmark material in its class. -:- For detailed product information, please contact sales. -: AISI 1117 Steel, cold drawn, 19-32 mm (0.75-1.25 in) round Specification Dimensions Size： Diameter 20-1000 mm Length <4926 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, cold drawn, 19-32 mm (0.75-1.25 in) round Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1117 Steel, cold drawn, 19-32 mm (0.75-1.25 in) round -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1117 Steel, cold drawn, 19-32 mm (0.75-1.25 in) round -:- For detailed product information, please contact sales. -:

Packing of AISI 1117 Steel, cold drawn, 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 1397 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