AISI 1080 Steel, cold drawn, spheroidized annealed

AISI 1080 Steel, cold drawn, spheroidized annealed, 19-32 mm (0.75-1.25 in) round Product Information -:- For detailed product information, please contact sales. -: AISI 1080 Steel, cold drawn, spheroidized annealed, 19-32 mm (0.75-1.25 in) round Synonyms -:- For detailed product information, please contact sales. -:

AISI 1080 Steel, cold drawn, spheroidized annealed, 19-32 mm (0.75-1.25 in) round Product Information -:- For detailed product information, please contact sales. -: ### **Product Data Sheet: AISI 1080 Steel, Cold Drawn, Spheroidized Annealed Round Bar (19-32 mm / 0.75-1.25 in)** #### **1. Overview** AISI 1080 (UNS G10800) in the **Cold Drawn, Spheroidized Annealed** condition represents a premium, process-engineered form of high-carbon steel. This specialized product combines a unique microstructure with precision forming to create the ideal starting material for **severe cold forming and precision machining**. The spheroidized anneal delivers the softest, most ductile state possible for this carbon content, while the cold drawing process imparts excellent dimensional accuracy, surface finish, and a controlled strength increase. This 19-32 mm round bar is specifically designed for manufacturers who need to perform complex shaping at room temperature before achieving ultimate hardness and wear resistance through final heat treatment. --- #### **2. Chemical Composition (AISI/SAE Standard)** The high carbon content defines its ultimate performance envelope. | Element | Content (%) | | :--- | :--- | | **Carbon (C)** | **0.75 - 0.88** | | **Manganese (Mn)** | 0.60 - 0.90 | | **Phosphorus (P)** | ≤ 0.040 | | **Sulfur (S)** | ≤ 0.050 | | **Silicon (Si)** | 0.15 - 0.35 | | **Iron (Fe)** | Balance | --- #### **3. Typical Physical & Mechanical Properties (As-Delivered)** *Properties are for the spheroidized annealed & cold-drawn state, optimized for fabrication.* | Property | Typical Value / Description | | :--- | :--- | | **Condition** | Spheroidized Annealed + Cold Drawn | | **Microstructure** | **Spheroidite** (Globular carbides in a soft, ductile ferrite matrix) | | **Tensile Strength** | **540 - 690 MPa (78 - 100 ksi)** | | **Yield Strength (0.2% Offset)** | **415 - 620 MPa (60 - 90 ksi)** *(Enhanced by cold work)* | | **Elongation (in 50 mm)** | **≥ 15%** | | **Reduction in Area** | **≥ 50%** | | **Hardness** | **75 - 92 HRB** (Rockwell B) / **137 - 200 HB** (Brinell) | | **Machinability** | **Good for its carbon level (~70% of AISI 1212).** The spheroidized structure produces fragmented chips, reduces tool wear, and improves surface finish compared to pearlitic structures. | | **Cold Formability** | **Excellent.** This is the primary purpose. It can withstand severe cold deformation processes like high-reduction upsetting, extrusion, and bending without cracking. | | **Surface Finish & Tolerance** | Smooth, bright, scale-free surface with tight dimensional tolerances and superior straightness (±0.05 mm to ±0.15 mm typical). | | **Hardenability Potential** | **Exceptional.** After final part forming, it responds fully to quenching and tempering, achieving **60-65 HRC**. | --- #### **4. Key Characteristics & Metallurgical Rationale** * **Spheroidized Anneal:** This controlled, prolonged heat treatment converts the hard, lamellar cementite of pearlite into soft, spherical carbides. This maximizes ductility and minimizes hardness, creating a uniform, stress-relieved structure ideal for cold work. * **Cold Drawing Benefits:** The drawing process after annealing: * Enhances dimensional accuracy and consistency. * Improves surface finish and eliminates mill scale. * Imparts beneficial strain hardening, increasing yield strength. * Improves straightness and roundness. * **Dual-Phase Manufacturing Strategy:** The material is supplied in a **soft, formable phase** for easy fabrication and is later transformed by the end-user into a **hard, wear-resistant phase** for final performance. * **Predictable Performance:** This condition ensures uniform, reliable behavior during cold forming and a consistent response to subsequent hardening heat treatment. --- #### **5. Primary Product Applications** This product is the specified feedstock for high-volume, precision manufacturing of critical components. * **Cold Headed & Upset Fasteners:** **High-strength bolts, screws, rivets, and specialty pins** for automotive, aerospace, and construction where severe head forming or shank reduction is required. * **Cold Forged Components:** Complex parts like **automotive transmission shafts, gear blanks, and hand tool forgings** formed by cold extrusion or forging. * **Springs (Cold Coiled):** Wire and bar stock for manufacturing **high-stress compression and torsion springs** via cold coiling and forming processes. * **Precision Machined Parts:** Components such as **blanks for cutting tools, firearm actions, and精密 shafts** that require extensive, precise machining prior to hardening. * **Bearing Races & Pins:** For parts that are machined to tight tolerances in the soft state and then through-hardened for wear resistance. --- #### **6. Relevant International & Industry Standards** | Standard System | Standard Designation | Title / Scope | | :--- | :--- | :--- | | **AISI / SAE / UNS (USA)** | **1080, SAE J403, UNS G10800** | Standard Grade Designation | | **ASTM (USA)** | **ASTM A1074** | **Key Standard:** Specification for Hot-Rolled and Spheroidized Annealed Steel Bars for Forging and Similar Applications. | | **ASTM (USA)** | **ASTM A29/A29M** | Specification for Steel Bars, Carbon and Alloy. Spheroidize annealing is a specified optional requirement. | | **ASTM (USA)** | **ASTM A510** | Specification for General Requirements for Wire Rods and Coarse Round Wire. | | **DIN / EN (Germany/EU)** | **1.1231 / C80W2 (+C)** | EN 10263-4: Steel rod, bars and wire for cold heading and cold extrusion. The "+C" denotes a spheroidized annealed condition. | | **JIS (Japan)** | **SWRCH82A / SWRCH82B** | Carbon steel wires for cold heading and cold forging (JIS G3507-1). Often supplied annealed. | | **GB (China)** | **ML80** | Cold Heading and Cold Extruding Steel (GB/T 6478). | --- ### **Processing Pathway & Critical Notes** 1. **Fabrication:** The component is **cold headed, cold forged, extruded, or precision machined** from the soft, spheroidized bar. 2. **Stress Relieving (Optional):** After severe cold work, a low-temperature stress relief (~300-400°C / 575-750°F) may be used to prevent delayed cracking before hardening. 3. **Heat Treatment (Final Step):** * **Austenitize:** ~790-815°C (1450-1500°F). * **Quench:** Typically in oil for optimal balance of hardness and minimized distortion/cracking risk. * **Temper:** Immediately to desired hardness (e.g., 200-500°C / 400-930°F). 4. **Finishing:** Final grinding or surface treatment as required. **Weldability:** Remains **very poor**. Any welding must be completed before the final quench and temper cycle, with stringent preheat and post-heat procedures. **Summary:** AISI 1080 Cold Drawn, Spheroidized Annealed round bar is a high-value, **manufacturing-optimized material**. It enables cost-effective, high-volume production of complex, high-strength components through room-temperature forming, drastically reducing energy consumption and machining waste compared to hot forging. Its value proposition lies in its **ease of fabrication in the soft state** coupled with its **transformative potential into an extremely hard and durable final product**, making it indispensable for the fastener, automotive, and precision tooling industries. -:- For detailed product information, please contact sales. -: AISI 1080 Steel, cold drawn, spheroidized annealed, 19-32 mm (0.75-1.25 in) round Specification Dimensions Size： Diameter 20-1000 mm Length <4875 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 1080 Steel, cold drawn, spheroidized annealed, 19-32 mm (0.75-1.25 in) round Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1080 Steel, cold drawn, spheroidized annealed, 19-32 mm (0.75-1.25 in) round -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1080 Steel, cold drawn, spheroidized annealed, 19-32 mm (0.75-1.25 in) round -:- For detailed product information, please contact sales. -:

Packing of AISI 1080 Steel, cold drawn, spheroidized annealed, 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 1346 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