AISI 1008 Steel Wire

AISI 1008 Steel Wire, cold drawn bar, 19-32 mm (0.75-1.25 in) round Product Information -:- For detailed product information, please contact sales. -: AISI 1008 Steel Wire, cold drawn bar, 19-32 mm (0.75-1.25 in) round Synonyms -:- For detailed product information, please contact sales. -:

AISI 1008 Steel, cold drawn bar, 19-32 mm (0.75-1.25 in) round Product Information -:- For detailed product information, please contact sales. -: ## **Product Specification: AISI 1008 Low Carbon Steel, Cold-Drawn Bar** ### **Product Designation** * **Standard Name:** AISI 1008 / SAE 1008 * **UNS Number:** G10080 * **Condition:** **Cold-Drawn** * **Product Form:** **Round Bar** * **Size Range:** **19 mm to 32 mm (0.75 inch to 1.25 inch) diameter** * **Key Features:** Excellent surface finish, tight dimensional tolerances, increased strength from cold work, superior straightness, and good machinability. ### **Overview** AISI 1008 cold-drawn round bar is a premium, ready-to-machine form of low-carbon steel. The cold-drawing process transforms hot-rolled stock by pulling it through a die at room temperature, imparting significant improvements. For bars in the 19-32 mm (0.75-1.25 in) range, this results in a smooth, scale-free surface, precise and consistent dimensions, and a substantial increase in yield and tensile strength due to strain hardening. It is the preferred stock material for manufacturing components requiring accuracy, a fine finish, and reliable mechanical properties without the need for initial descaling or rough turning. --- ### **1. Chemical Composition (Typical % by Weight, AISI/SAE Standard)** The composition is similar to hot-rolled 1008, with a focus on consistency for the drawing process. | Element | Content (%) | Role & Effect | | :--- | :--- | :--- | | **Carbon (C)** | 0.10 max | Slightly higher than 1006, providing a better base for strength after cold working while retaining excellent weldability. | | **Manganese (Mn)** | 0.30 - 0.50 | Aids in deoxidation and contributes to solid solution strengthening. | | **Phosphorus (P)** | 0.040 max | Impurity; controlled for formability. | | **Sulfur (S)** | 0.050 max | Impurity; often kept at the higher end of the range to improve machinability in cold-drawn products. | | **Iron (Fe)** | Balance | Primary constituent. | | **Note:** The consistent, low-carbon ferritic microstructure ensures predictable behavior during cold drawing and subsequent processing. --- ### **2. Physical & Mechanical Properties (Cold-Drawn Condition, 19-32 mm round)** **A. Physical Properties** * **Density:** 7.87 g/cm³ (0.284 lb/in³) * **Elastic Modulus (E):** 200 GPa (29,000 ksi) * **Poisson's Ratio:** 0.29 * **Thermal Conductivity:** ~62 W/m·K (High) * **Electrical Resistivity:** ~12.1 μΩ·cm (Good conductor) **B. Mechanical Properties (Typical, As-Cold-Drawn)** *Properties are anisotropic, with maximum strength aligned with the drawing direction.* * **Yield Strength (0.2% Offset):** **345 - 515 MPa (50 - 75 ksi)** *[~30%+ higher than hot-rolled]* * **Tensile Strength:** **450 - 585 MPa (65 - 85 ksi)** * **Elongation in 50 mm:** **12% - 22%** (Adequate for many forming operations, though reduced by cold work). * **Hardness (Brinell):** **140 - 195 HB** * **Surface Finish:** Smooth, bright, and free of mill scale. Typical surface roughness (Ra) can be ≤ 3.2 μm (125 μin), ideal for painting, plating, or use as-is. * **Dimensional Tolerance:** Meets precise **ASTM A29** cold-drawn tolerances. Excellent for diameter, roundness, and straightness control. * **Machinability:** **Good to Very Good.** The cold-worked structure provides better chip-breaking characteristics than annealed material. The slightly higher carbon and sulfur content (vs. 1006) further enhance machinability, making it a preferred choice for screw machine and CNC lathe operations. * **Hardenability:** **None.** Cannot be strengthened by heat treatment. --- ### **3. Product Applications** Cold-drawn AISI 1008 round bar in this medium diameter range is a workhorse material for precision parts across multiple industries. * **Shafts & Axles:** Guide rods, pivot shafts, light-duty drive shafts, and conveyor rollers where straightness and surface finish are critical. * **Precision Machined Components:** Bushings, spacers, sleeves, dowel pins, hydraulic fittings, and fasteners produced on automatic screw machines or CNC lathes. * **Automotive Components:** Linkage rods, brake pins, clutch parts, and bracket pins requiring consistency and finish. * **General Hardware & Fasteners:** Higher-strength bolts, studs, and pins (often cold-headed from this stock). * **Welded Assemblies:** For structures requiring a clean, paint-ready surface without post-processing, such as frames for machinery, furniture, or retail displays. * **Tooling & Fixtures:** As a durable, easy-to-machine material for jigs, fixtures, and non-wear tooling components. --- ### **4. International Standards & Designations** | Standard System | Designation | Notes / Key Comparison | | :--- | :--- | :--- | | **SAE / AISI (USA)** | **SAE 1008 / AISI 1008** | Base grade designation. | | **UNS (USA)** | **G10080** | Unified Numbering System. | | **ASTM (USA)** | **ASTM A108** | **The governing specification** for cold-finished carbon and alloy steel bars. Tolerances per **ASTM A29**. | | **DIN / EN (Germany/EU)** | **C10D (1.1121)** or **C15D (1.1141)**. | Bright drawn low carbon steels. C10D is a closer match, though European grades often have slightly tighter specifications. | | **JIS (Japan)** | **SWRCH15A (JIS G3507-1)** | Cold heading quality steel wire rod. SWRCH10A (for 1006) and SWRCH15A are common equivalents. | | **GB (China)** | **15, Q215** | Common designations for cold-drawing quality low carbon steel. | | **ISO** | **ISO 683-18: G10** or **G15** | Designation for non-alloy bright steel products. | --- ### **Processing & Design Considerations** 1. **Stress Relieving:** If significant secondary cold forming (e.g., flanging, tight coiling) is required, a low-temperature stress relief (~345°C / 650°F) can restore ductility and reduce springback. 2. **Anisotropy:** Mechanical properties are directional. Transverse ductility and impact strength are lower than longitudinal values. 3. **Weldability:** **Excellent.** However, the heat from welding will locally anneal (soften) the cold-worked material in the Heat-Affected Zone (HAZ). 4. **Value Proposition:** Offers "near-net-shape" benefits, reducing machining time, material waste, and secondary finishing compared to starting with hot-rolled bar. ### **Summary** **AISI 1008 cold-drawn round bar in the 19-32 mm (0.75-1.25 in) range is an optimized manufacturing input that delivers enhanced strength, precision, and surface quality over its hot-rolled counterpart.** It represents an ideal balance for component production: it is strong enough for many mechanical applications, machines well, finishes beautifully, and is economically viable for high-volume runs. Governed by **ASTM A108**, it is a standardized, reliable, and widely available material that forms the backbone of countless machined and fabricated parts in automotive, general machinery, and hardware industries globally. Its properties make it a superior alternative to 1006 for applications requiring a slight strength advantage and improved machinability. -:- For detailed product information, please contact sales. -: AISI 1008 Steel, cold drawn bar, 19-32 mm (0.75-1.25 in) round Specification Dimensions Size： Diameter 20-1000 mm Length <4739 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 1008 Steel, cold drawn bar, 19-32 mm (0.75-1.25 in) round Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1008 Steel Wire, cold drawn bar, 19-32 mm (0.75-1.25 in) round -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1008 Steel Wire, cold drawn bar, 19-32 mm (0.75-1.25 in) round -:- For detailed product information, please contact sales. -:

Packing of AISI 1008 Steel Wire, cold drawn bar, 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 Wire 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 1210 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