AISI 1009 Steel Seamless tube

AISI 1009 Steel Seamless tube Product Information -:- For detailed product information, please contact sales. -: AISI 1009 Steel Seamless tube Synonyms -:- For detailed product information, please contact sales. -:

AISI 1009 Steel Product Information -:- For detailed product information, please contact sales. -: ## **Product Specification: AISI 1009 Low Carbon Steel** ### **Product Designation** * **Standard Name:** AISI 1009 / SAE 1009 * **UNS Number:** G10090 * **Type:** Very Low Carbon, Non-Hardenable Plain Carbon Steel * **Common Forms:** Hot-rolled or cold-rolled sheet, strip, wire, rod, bar. * **Key Feature:** A borderline grade between ultra-low carbon (1005/1006) and standard mild steel, offering a subtle balance of slightly higher strength than 1006 while retaining excellent ductility and weldability. ### **Overview** AISI 1009 is a basic, low-carbon steel that occupies a transitional position in the carbon steel series. With a maximum carbon content of 0.15%, it provides a **modest increase in strength** over grades like 1005 and 1006, while still maintaining **very good ductility, formability, and outstanding weldability**. It is a general-purpose, economical steel used in applications where a small strength boost is beneficial but the ease of fabrication characteristic of mild steel remains essential. It cannot be strengthened by heat treatment and is typically supplied in the as-rolled or annealed condition. --- ### **1. Chemical Composition (Typical % by Weight, AISI/SAE Standard)** The composition is simple, with carbon as the primary variable differentiating it from lower grades. | Element | Content (%) | Role & Effect | | :--- | :--- | :--- | | **Carbon (C)** | 0.13 - 0.17 | **Defining element.** The higher end of the "very low carbon" range. Provides a noticeable increase in strength and hardness over 1006, while keeping formability and weldability high. | | **Manganese (Mn)** | 0.30 - 0.60 | Aids in deoxidation and provides solid solution strengthening. The range accommodates different strength levels. | | **Phosphorus (P)** | 0.040 max | Impurity; controlled to maintain cold workability. | | **Sulfur (S)** | 0.050 max | Impurity; can be adjusted for machinability (e.g., "resulturized" variants). | | **Silicon (Si)** | *Variable* | Depends on deoxidation practice (rimmed, capped, or killed). Typically low for good surface quality in formed parts. | | **Iron (Fe)** | Balance | Primary constituent. | --- ### **2. Physical & Mechanical Properties (Annealed/Hot-Rolled State)** **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:** ~61 W/m·K (High) * **Electrical Resistivity:** ~12.0 μΩ·cm (Good conductor) * **Magnetic Properties:** Strongly ferromagnetic. **B. Mechanical Properties (Typical, As-Hot-Rolled or Annealed)** *Properties are indicative and vary with processing (e.g., cold rolling increases strength).* * **Yield Strength (0.2% Offset):** 205 - 310 MPa (30 - 45 ksi) * **Tensile Strength:** 330 - 450 MPa (48 - 65 ksi) * **Elongation in 50 mm:** **25% - 35%** (Very good ductility) * **Hardness (Brinell):** 105 - 145 HB * **Machinability:** **Fair to Good.** Better than lower carbon grades (1005/1006) due to less gumminess, but not as good as free-machining steels with higher sulfur. * **Hardenability:** **Effectively none.** Cannot be strengthened by quenching. * **Formability:** Good for bending, roll forming, and moderate drawing (especially in killed steel qualities like DQ/DQSK equivalents). * **Weldability:** **Excellent.** Can be welded by all common processes without pre-heat or post-heat treatment. --- ### **3. Product Applications** AISI 1009 is used in a wide array of general manufacturing applications where a combination of reasonable strength, good formability, and weldability is required. * **General Fabrication & Sheet Metal:** * Cabinets, enclosures, ductwork, and panels for industrial equipment. * Brackets, frames, and supports. * **Automotive Non-Structural Components:** * Seat adjustment parts, brackets, non-critical shields, and interior trim components. * **Pipe & Tubing:** * Welded tubing for furniture, handrails, and low-pressure applications. * **Wire Products:** * General-purpose wire for fencing, mesh, and forming. * **Forging Stock:** * For small, simple forged parts like levers or hooks where higher strength than 1008 is desired. * **Hardware & Fasteners:** * Nuts, bolts, and washers (often cold-forged from wire). * **Base for Coating:** A good substrate for galvanizing or painting. --- ### **4. International Standards & Designations** AISI 1009 is a specific SAE grade; international equivalents often target a similar property range rather than an exact chemical match. | Standard System | Equivalent / Comparable Grade | Notes / Key Comparison | | :--- | :--- | :--- | | **SAE / AISI (USA)** | **SAE 1009 / AISI 1009** | The standard designation. | | **UNS (USA)** | **G10090** | Unified Numbering System. | | **ASTM (USA)** | **ASTM A36** (Structural), **ASTM A569** (Hot-Rolled Sheet), **ASTM A1011** (Sheet) | Often supplied under these broader specifications, which cover similar strength levels. | | **DIN / EN (Germany/EU)** | **S235JR (1.0038), DC03 (1.0346)** | **S235JR** is the common structural steel equivalent. **DC03** is the Drawing Quality sheet with similar formability intent. | | **JIS (Japan)** | **SS330, SPHC** | **SS330** for general structure; **SPHC** for hot-rolled sheet/plate. | | **GB (China)** | **Q235B, 15** | **Q235B** is the dominant structural steel equivalent in China. | | **ISO** | **ISO 630-2: E235B, ISO 3574: CR2** | E235B for structural steel; CR2 for commercial quality cold-rolled sheet. | --- ### **Key Considerations & Comparisons** * **vs. AISI 1006/1008:** AISI 1009 has **higher carbon**, thus **higher strength and hardness**, but **slightly lower ductility and formability**. Weldability remains excellent across all. * **vs. AISI 1010/1012:** AISI 1009 has **slightly lower carbon**, making it **more ductile and weldable**, but **less strong** than 1010+ grades. * **Quality Variants:** Like 1006/1008, it can be produced in different quality levels for sheet (e.g., Commercial Quality, Drawing Quality) based on deoxidation practice. * **Primary Advantage:** It offers a **simple, cost-effective strength upgrade** over the very lowest carbon steels without transitioning into the more specialized 10xx series grades. ### **Summary** **AISI 1009 is a versatile, general-purpose low-carbon steel that provides a practical middle ground in the mild steel family.** It delivers a **meaningful increase in as-rolled strength** compared to 1005/1006 while preserving the excellent weldability and good formability that define mild steel. Its value lies in its simplicity and adaptability for a broad range of fabricated components, structural parts, and formed products where performance requirements are moderate and cost-effectiveness is paramount. While not as precisely specified as some dedicated forming grades, it serves as a reliable and widely understood material for general engineering purposes, with clear functional equivalents in major international standards like **EN S235JR** and **GB Q235B**. -:- For detailed product information, please contact sales. -: AISI 1009 Steel Specification Dimensions Size： Diameter 20-1000 mm Length <4741 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 1009 Steel Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1009 Steel Seamless tube -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1009 Steel Seamless tube -:- For detailed product information, please contact sales. -:

Packing of AISI 1009 Steel Seamless tube -:- 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 Seamless tube 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 1212 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