AISI 1008 Steel, hot rolled

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

AISI 1008 Steel, hot rolled 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, Hot-Rolled Bar** ### **Product Designation** * **Standard Name:** AISI 1008 / SAE 1008 * **UNS Number:** G10080 * **Condition:** **Hot-Rolled (As-Rolled)** * **Product Form:** **Round Bar** * **Size Range:** **19 mm to 32 mm (0.75 inch to 1.25 inch) diameter** * **Surface:** Characteristic blue/black mill scale. * **Key Feature:** Slightly higher carbon than 1006, offering a modest boost in strength while retaining excellent weldability and formability. ### **Overview** AISI 1008 hot-rolled round bar is a fundamental, low-cost, low-carbon steel supplied in its most common mill-produced form. The hot-rolling process provides a good combination of internal soundness and mechanical properties. Within the 19-32 mm (0.75-1.25 in) diameter range, this product offers marginally higher strength than AISI 1006 while maintaining very good ductility and weldability. It is a versatile and widely available stock material ideal for general fabrication, forging, welding, and applications where moderate strength is sufficient and surface finish is not critical in the as-supplied state. --- ### **1. Chemical Composition (Typical % by Weight, AISI/SAE Standard)** AISI 1008 is a classic mild steel with a simple, lean composition. | Element | Content (%) | Role & Effect | | :--- | :--- | :--- | | **Carbon (C)** | 0.10 max | **Primary differentiator from 1006.** Slightly higher carbon provides a modest increase in strength while maintaining excellent weldability and good formability. | | **Manganese (Mn)** | 0.30 - 0.50 | Aids in deoxidation and provides mild solid solution strengthening. Slightly higher range than 1006. | | **Phosphorus (P)** | 0.040 max | Impurity; controlled to maintain cold workability. | | **Sulfur (S)** | 0.050 max | Impurity; can affect surface finish and weldability. | | **Iron (Fe)** | Balance | Primary constituent. | | **Note:** Silicon content is typically low and varies with deoxidation practice (killed, semi-killed, or capped). | --- ### **2. Physical & Mechanical Properties (Hot-Rolled 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) * **Coefficient of Thermal Expansion:** 11.7 x 10⁻⁶ /K * **Magnetic Properties:** Strongly ferromagnetic. **B. Mechanical Properties (Typical, As-Hot-Rolled)** *Properties are generally uniform in all directions (isotropic) due to hot working.* * **Yield Strength (0.2% Offset):** 260 - 340 MPa (38 - 49 ksi) * **Tensile Strength:** 365 - 450 MPa (53 - 65 ksi) * **Elongation in 50 mm:** **22% - 32%** (Very good ductility) * **Hardness (Brinell):** 105 - 130 HB * **Surface Finish:** Covered in a tenacious, dark blue/black iron oxide layer (mill scale). Must be removed via pickling, shot blasting, or machining for finishing operations. * **Dimensional Tolerance:** Conforms to standard hot-rolled bar tolerances (e.g., ASTM A29), suitable for general-purpose applications. * **Machinability:** **Fair to Poor.** The low-carbon ferritic structure remains somewhat gummy, leading to built-up edge and stringy chips. Machinability is better than 1006 but still not ideal for high-speed operations. * **Hardenability:** **Negligible.** Cannot be meaningfully strengthened by heat treatment. --- ### **3. Product Applications** Hot-rolled AISI 1008 round bar in this medium size range is a staple for industrial, agricultural, and construction applications requiring a balance of strength, weldability, and economy. * **General Fabrication & Structural Use:** * Frames, supports, brackets, and handrails for machinery, storage systems, and industrial platforms. * Base material for welded assemblies in trailers, carts, and agricultural implements. * **Forging Stock:** * An excellent and economical starting material for hot-forged parts such as clevises, link arms, brackets, and simple tools. * **Construction & Hardware:** * Anchor bolts, tie rods, pins, and dowels for concrete and masonry. * Raw material for the manufacture of standard fasteners, hinges, and other hardware items. * **Shafts & Pins (Non-Critical):** * Axles for light-duty wheels, pivot pins, hinge pins, and guide rods where high precision is not required. * **Agricultural Equipment:** * Components for plows, cultivators, and harrows where weldability and moderate strength are key. --- ### **4. International Standards & Designations** | Standard System | Designation | Notes / Key Comparison | | :--- | :--- | :--- | | **SAE / AISI (USA)** | **SAE 1008 / AISI 1008** | The standard grade designation. | | **UNS (USA)** | **G10080** | Unified Numbering System. | | **ASTM (USA)** | **ASTM A36** (Structural), **ASTM A575** (Merchant Quality), **ASTM A576** (Special Quality, Grades 1018/1020 often specified). | Often supplied to these general ASTM specs. A36 is a common catch-all for structural shapes with similar properties. | | **DIN / EN (Germany/EU)** | **S235JR (1.0038), DD11 (1.0338)** | **S235JR** is the most common European structural steel equivalent. **DD11** is for drawing and forming. The carbon content is very similar. | | **JIS (Japan)** | **SS330, SS400** | General structural steel grades. SS330 (245 MPa min yield) is a closer match. | | **GB (China)** | **Q235B, 10** | **Q235B** is the dominant Chinese equivalent for hot-rolled structural steel with 235 MPa yield strength. | | **ISO** | **ISO 630-2: E235B** | International standard for structural steel with a 235 MPa minimum yield strength. | --- ### **Key Processing Notes** 1. **Scale Removal:** Essential for painting, plating, or precision welding. Common methods include abrasive blasting, acid pickling, or machining. 2. **Weldability:** **Excellent.** Can be welded by all standard processes (SMAW, GMAW, GTAW, etc.) without pre-heat or post-heat treatment. The heat-affected zone will not harden. 3. **Cold Bending/Forming:** Good formability, though the mill scale will crack and spall during bending. 4. **Straightening:** May require cold straightening for applications demanding high straightness. ### **Summary** **AISI 1008 hot-rolled round bar in the 19-32 mm (0.75-1.25 in) range is a robust, economical, and versatile commodity steel product.** It provides a practical upgrade in strength over 1006 while maintaining the essential benefits of mild steel: easy welding, good formability, and wide availability. It serves as a reliable raw material for a broad spectrum of general manufacturing, construction, and forging applications where ultimate precision and surface finish are secondary to function, durability, and cost-effectiveness. Its properties and applications align closely with common international structural grades like **ASTM A36, EN S235JR, and GB Q235B**, making it a globally recognized material foundation. -:- For detailed product information, please contact sales. -: AISI 1008 Steel, hot rolled bar, 19-32 mm (0.75-1.25 in) round Specification Dimensions Size： Diameter 20-1000 mm Length <4738 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, hot rolled bar, 19-32 mm (0.75-1.25 in) round Properties -:- For detailed product information, please contact sales. -:

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

Packing of AISI 1008 Steel, hot rolled 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 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 1209 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