AISI 1012 Steel, CQ

AISI 1012 Steel, CQ sheet,1.6-5.8 mm round or thickness Product Information -:- For detailed product information, please contact sales. -: AISI 1012 Steel, CQ sheet,1.6-5.8 mm round or thickness Synonyms -:- For detailed product information, please contact sales. -:

AISI 1012 Steel, CQ sheet,1.6-5.8 mm round or thickness Product Information -:- For detailed product information, please contact sales. -: ## **Product Specification: AISI 1012 Low Carbon Steel, Commercial Quality (CQ) Sheet** ### **Product Designation** * **Base Grade:** AISI 1012 * **Quality Designation:** **Commercial Quality (CQ)** * **UNS Number:** G10120 * **Product Form:** **Sheet** * **Thickness Range:** **1.6 mm to 5.8 mm (0.06 to 0.23 inches)** * **Surface Condition:** As-rolled mill surface, typically with an oxide layer (scale). * **Key Feature:** A cost-optimized, general-purpose steel sheet offering a balance of moderate strength, fair formability, and good weldability for non-critical applications where surface finish is secondary. ### **Overview** AISI 1012 Commercial Quality (CQ) sheet is the most economical and widely available form of 1012 steel in the specified thickness range. Produced with standard steelmaking and rolling practices, it prioritizes low cost and functional performance over superior formability or surface perfection. This grade is characterized by its **slightly higher carbon content compared to 1008/1010 CQ**, providing a modest boost in strength and stiffness. It is the go-to material for a vast array of fabricated components, enclosures, and structural parts where the final product will be painted or otherwise coated, and where forming operations are limited to simple bends and roll forming. --- ### **1. Chemical Composition (Typical % by Weight, CQ Practice)** The composition aligns with standard AISI 1012 ranges, with less restrictive internal cleanliness and property consistency than Drawing Quality grades. | Element | Content (%) | Role & Effect in CQ Sheet | | :--- | :--- | :--- | | **Carbon (C)** | 0.10 - 0.15 | Provides base strength and slightly improved stiffness over 1008/1010 CQ. Limits deep drawability. | | **Manganese (Mn)** | 0.30 - 0.60 | Standard range for mild strength and deoxidation. | | **Phosphorus (P)** | 0.040 max | Impurity; standard control. | | **Sulfur (S)** | 0.050 max | Impurity; standard control. | | **Silicon (Si)** | Typically low (<0.10) | Characteristic of rimmed or capped steel, resulting in a cleaner surface for painting but more variable mechanical properties. | | **Note:** CQ steel is not fully deoxidized ("killed"), which can lead to **strain aging** (an increase in yield strength and decrease in ductility over time after cold working). | --- ### **2. Physical & Mechanical Properties (CQ Sheet, 1.6-5.8 mm thick)** **A. Physical Properties** * **Density:** 7.87 g/cm³ * **Elastic Modulus (E):** 200 GPa (29,000 ksi) * **Thermal Conductivity:** ~60 W/m·K * **Magnetic Properties:** Strongly ferromagnetic. **B. Mechanical Properties (Typical, As-Hot-Rolled or Cold-Rolled)** | Property | **Commercial Quality (CQ) - AISI 1012** | | :--- | :--- | | **Yield Strength** | 230 - 330 MPa (33 - 48 ksi) | | **Tensile Strength** | 370 - 460 MPa (54 - 67 ksi) | | **Elongation in 50 mm** | **18% - 28%** (Adequate for simple bends and light forming) | | **Hardness (Brinell)** | 115 - 155 HB | | **n-value (Strain Hardening Exp.)** | Low and variable. Not suitable for significant stretch forming. | | **r-value (Plastic Strain Ratio)** | Low and variable. Poor for deep drawing operations. | | **Surface Finish** | Standard mill finish. May exhibit imperfections like mill scale, slight roughness, or minor surface irregularities. Requires cleaning/pre-treatment for painting. | | **Formability** | **Fair.** Suitable for **simple bending, roll forming, flanging, and mild stamping.** **Not recommended for deep drawing, severe stretching, or complex forming.** | | **Strain Aging** | **Susceptible.** Mechanical properties may change over time after forming. | --- ### **3. Product Applications** AISI 1012 CQ sheet is specified for cost-sensitive applications where the part is functional, not cosmetic, and forming is straightforward. * **General Fabrication & Enclosures:** * Electrical cabinets, control boxes, junction boxes, and equipment covers. * Machine guards, protective shrouds, and access panels. * Ductwork, ventilation housings, and chutes. * **Structural & Support Components:** * Brackets, mounting plates, framing channels, and shelving. * Trailer sidewalls and flooring (secondary structure). * Agricultural equipment panels and hoppers. * **Painted Assemblies:** * Parts where the surface will be cleaned, abrasive blasted, primed, and painted, effectively hiding surface imperfections. * **Industrial Storage & Furniture:** * Lockers, industrial shelving units, and workbenches. --- ### **4. International Standards & Designations** | Standard System | Designation | Notes / Key Comparison | | :--- | :--- | :--- | | **ASTM (USA)** | **ASTM A366** | **The primary U.S. specification for Commercial Quality carbon steel sheet.** | | **SAE / AISI** | **SAE 1012** with CQ practice | The base grade, with quality defined by the purchase specification (ASTM A366). | | **DIN / EN (EU)**| **DC01 (EN 10130)** | The closest European equivalent for cold-rolled, mild forming steel sheet. DC01 is considered a "Commercial Quality" grade. | | **JIS (Japan)** | **SPHC (JIS G3131)** or **SPCC (JIS G3141)** | **SPHC** for hot-rolled sheet/plate; **SPCC** for cold-rolled sheet. Both represent commercial quality. | | **GB (China)** | **Q235A/B, SPCC** | **Q235** series is the common structural steel equivalent. **SPCC** is also used. | | **ISO** | **ISO 3574: CR2 (Commercial Quality)** | International classification for cold-rolled carbon steel sheet. | --- ### **Selection Guide & Processing Notes** 1. **When to Specify CQ:** Choose 1012 CQ when the design involves **simple shapes, bends, and welds**, the **surface will be painted or hidden**, and **minimizing material cost is essential**. 2. **Forming Limitation:** This is not a deep-drawing steel. Attempting complex draws will likely result in cracking, excessive springback, or inconsistent part dimensions. 3. **Welding:** **Excellent.** All common welding processes can be used without pre-heat or post-heat treatment. 4. **Surface Preparation:** For successful painting, the surface **must be thoroughly cleaned** to remove mill scale, oil, and dirt via abrasive blasting, chemical treatment (phosphating), or thorough mechanical cleaning. 5. **Strain Aging Awareness:** For parts that are cold-formed and must remain dimensionally stable (e.g., a flat mounting plate), note that slight warping or a change in properties could occur over time. For critical flatness, specify killed steel (DQ or DQSK). ### **Summary** **AISI 1012 Commercial Quality (CQ) sheet (1.6-5.8 mm thick) is the fundamental, economical building block for a multitude of industrial sheet metal fabrications.** It delivers the core benefits of mild steel—weldability, basic strength, and fair formability—at the lowest possible cost. Its slightly higher carbon content provides a useful stiffness advantage over 1008/1010 CQ for panels and brackets. Specifying it under **ASTM A366** (or its global equivalents like **EN DC01** and **JIS SPHC/SPCC**) ensures a predictable, fit-for-purpose material for applications where the part's function outweighs its aesthetic requirements, maximizing value in non-critical, high-volume production. -:- For detailed product information, please contact sales. -: AISI 1012 Steel, CQ sheet,1.6-5.8 mm round or thickness Specification Dimensions Size： Diameter 20-1000 mm Length <4749 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 1012 Steel, CQ sheet,1.6-5.8 mm round or thickness Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1012 Steel, CQ sheet,1.6-5.8 mm round or thickness -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1012 Steel, CQ sheet,1.6-5.8 mm round or thickness -:- For detailed product information, please contact sales. -:

Packing of AISI 1012 Steel, CQ sheet,1.6-5.8 mm round or thickness -:- 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 1220 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