AISI 1006 Steel, CQ, DQ, and DQSK

AISI 1006 Steel, CQ, DQ, and DQSK sheet, 1.6-5.8 (0.06-0.23 in) mm thick Product Information -:- For detailed product information, please contact sales. -: AISI 1006 Steel, CQ, DQ, and DQSK sheet, 1.6-5.8 (0.06-0.23 in) mm thick Synonyms -:- For detailed product information, please contact sales. -:

AISI 1006 Steel, CQ, DQ, and DQSK sheet, 1.6-5.8 (0.06-0.23 in) mm thick Product Information -:- For detailed product information, please contact sales. -: ## **Product Specification: AISI 1006 Low Carbon Steel Sheet - Commercial & Drawing Qualities** ### **Product Designation** * **Base Grade:** AISI 1006 / SAE 1006 * **UNS Number:** G10060 * **Product Form:** **Sheet** * **Thickness Range:** **1.6 mm to 5.8 mm (0.06 inch to 0.23 inch)** * **Quality Designations:** **CQ (Commercial Quality), DQ (Drawing Quality), DQSK (Drawing Quality, Special Killed)** * **Key Feature:** Variations in deoxidation and process control to optimize for either general fabrication or demanding forming operations. ### **Overview** AISI 1006 sheet steel is the fundamental low-carbon steel product used across countless industries. Within the 1.6-5.8 mm thickness range, it is produced in different quality levels—**CQ, DQ, and DQSK**—which define its formability, surface characteristics, and consistency. These designations are not about chemistry (which remains essentially AISI 1006) but about **steelmaking practice, deoxidation, and internal cleanliness**. Choosing the correct quality is critical for successful manufacturing, balancing cost with performance for applications ranging from simple brackets to complex deep-drawn parts. --- ### **1. Chemical Composition (Typical % by Weight)** The base chemistry aligns with AISI 1006, but allowable ranges and practices differ by quality. | Element | CQ / DQ / DQSK Typical (%) | Role & Effect & Quality Difference | | :--- | :--- | :--- | | **Carbon (C)** | 0.08 max (often 0.04-0.08) | Very low for ductility. **DQSK** will have the most consistent, lower aim carbon for uniform forming. | | **Manganese (Mn)** | 0.25 - 0.40 | For strength and deoxidation. Tightly controlled in DQ/DQSK. | | **Phosphorus (P)** | 0.040 max | Impurity. Lower in DQ/DQSK for better cold workability. | | **Sulfur (S)** | 0.050 max | Impurity. Lower in DQ/DQSK for superior surface finish. | | **Silicon (Si)** | **Key Differentiator.** | **CQ:** Variable, may be rimmed or capped (low Si).
**DQ:** Typically aluminum-killed for better formability.
**DQSK:** **Always aluminum-killed.** Very low Si (<0.05%), ensuring a non-aging, clean surface and excellent ductility. | | **Aluminum (Al)** | **Critical for DQ/DQSK.** | Added as a deoxidizer ("killing"). In **DQSK**, sufficient Al is used to fully kill the steel and tie up nitrogen, preventing **strain aging** (loss of ductility over time after forming). | --- ### **2. Physical & Mechanical Properties (1.6-5.8 mm Sheet)** **A. Physical Properties (All Qualities)** * **Density:** 7.87 g/cm³ * **Elastic Modulus:** 200 GPa (29,000 ksi) * **Thermal Conductivity:** High (~63 W/m·K) * **Magnetic Properties:** Ferromagnetic. **B. Mechanical Properties (Typical, As-Rolled/Annealed)** | Property | **Commercial Quality (CQ)** | **Drawing Quality (DQ)** | **Drawing Quality, Special Killed (DQSK)** | | :--- | :--- | :--- | :--- | | **Yield Strength** | 180 - 260 MPa (26 - 38 ksi) | 170 - 240 MPa (25 - 35 ksi) | 150 - 220 MPa (22 - 32 ksi) | | **Tensile Strength** | 300 - 380 MPa (44 - 55 ksi) | 290 - 370 MPa (42 - 54 ksi) | 280 - 350 MPa (41 - 51 ksi) | | **Elongation (50mm)** | 25% - 35% | 30% - 40% | **35% - 45%+** | | **n-value (Strain Hardening Exp.)** | Lower, variable | Moderate, more consistent | **High and consistent** (optimal for stretching) | | **r-value (Plastic Strain Ratio)** | Lower, variable | Moderate | **High and consistent** (optimal for deep drawing) | | **Surface Finish** | Standard mill finish. May have imperfections. | Cleaner, more consistent. | **Premium, uniform finish.** Essential for exposed parts. | | **Formability** | Adequate for bending, simple forming. | Good for moderate drawing and forming. | **Excellent for severe deep drawing, stretching, and complex forming.** | | **Strain Aging** | Prone to aging (can become brittle). | Less prone. | **Non-aging (Special Killed).** Properties remain stable over time. | --- ### **3. Product Applications by Quality** **Commercial Quality (CQ):** * **General Fabrication:** Cabinets, shrouds, ductwork, simple brackets. * **Non-Critical Structural Parts:** Panels, backing plates, and supports where appearance is not primary. * **Painted Components:** Where surface imperfections can be filled by primer/paint. **Drawing Quality (DQ):** * **Moderate Forming:** Appliance cabinets, furniture components, electrical enclosures, truck body panels. * **Automotive Non-Exposed Parts:** Inner door panels, seat frames, underbody shields. * **HVAC Components:** Formed duct fittings and housings. **Drawing Quality, Special Killed (DQSK):** * **Severe Deep Drawing:** Fuel tanks, oil filter housings, sink bowls, fire extinguisher bodies. * **Complex Stretch Forming:** Automotive exterior body panels (doors, fenders, hoods) requiring perfect surfaces for painting. * **Critical Exposed Parts:** Appliance front panels, computer chassis, premium furniture where surface quality is paramount. * **Parts Requiring Stability:** Components that must not warp or distort over time after stamping. --- ### **4. International Standards & Designations** | Standard System | CQ Equivalent | DQ Equivalent | DQSK Equivalent | Notes | | :--- | :--- | :--- | :--- | :--- | | **ASTM (USA)** | **ASTM A366** (CQ Sheet) | **ASTM A619** (DQ Sheet) | **ASTM A620** (DQSK Sheet) | The primary U.S. specifications defining these quality designations for sheet. | | **SAE / AISI** | **SAE 1006** (base grade) | **SAE 1006** with DQ practice | **SAE 1006** with DQSK practice | SAE J403 covers chemistry; quality is a supplemental requirement. | | **DIN / EN (EU)**| **DC01 (EN 10130)** | **DC03 (EN 10130)** | **DC04 (EN 10130)** | EN 10130 is the standard for cold rolled low carbon steel flat products for cold forming. DC01 (CQ), DC03 (DQ), DC04 (DQSK/EDDQ). | | **JIS (Japan)** | **SPCC (JIS G3141)** | **SPCD (JIS G3141)** | **SPCE (JIS G3141)** | JIS G3141 is the direct equivalent standard. SPCC (CQ), SPCD (DQ), SPCE (DQSK/EDDQ). | | **GB (China)** | **SPCC (GB/T 5213)** | **SPCD (GB/T 5213)** | **SPCE (GB/T 5213)** | Chinese standard adopts similar JIS nomenclature. | --- ### **Selection Guide & Processing Notes** 1. **Quality vs. Cost:** **CQ is the most economical,** DQ offers a balanced upgrade, and **DQSK commands a premium** for its superior and consistent performance. 2. **Surface Criticality:** For exposed, painted, or plated parts, **DQ or DQSK is mandatory** to avoid surface defects like "roping" or "orange peel." 3. **Forming Severity:** Use the **Quality Hierarchy: CQ < DQ < DQSK**. Match the quality to the strain levels and complexity of your stamping die. 4. **Welding:** All qualities weld excellently. DQSK's consistent properties yield the most predictable weld behavior. 5. **Thickness Range (1.6-5.8mm):** This covers a versatile range from light-gauge panels to heavier brackets and formed housings. ### **Summary** **AISI 1006 sheet steel in Commercial, Drawing, and Special Killed qualities (1.6-5.8 mm thick) represents a tiered material system designed for manufacturing efficiency.** It is not one product but a family, where **CQ serves general purpose needs, DQ upgrades for reliable forming, and DQSK delivers elite performance for the most demanding stamping applications.** This system allows designers and engineers to precisely specify the required level of formability, surface finish, and consistency, optimizing part performance and production yield while controlling cost. The global alignment of standards (ASTM A366/A619/A620, EN DC01/03/04, JIS SPCC/CD/CE) makes this quality-based classification a universal language in sheet metal fabrication. -:- For detailed product information, please contact sales. -: AISI 1006 Steel, CQ, DQ, and DQSK sheet, 1.6-5.8 (0.06-0.23 in) mm thick Specification Dimensions Size： Diameter 20-1000 mm Length <4737 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 1006 Steel, CQ, DQ, and DQSK sheet, 1.6-5.8 (0.06-0.23 in) mm thick Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1006 Steel, CQ, DQ, and DQSK sheet, 1.6-5.8 (0.06-0.23 in) mm thick -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1006 Steel, CQ, DQ, and DQSK sheet, 1.6-5.8 (0.06-0.23 in) mm thick -:- For detailed product information, please contact sales. -:

Packing of AISI 1006 Steel, CQ, DQ, and DQSK sheet, 1.6-5.8 (0.06-0.23 in) mm thick -:- 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 1208 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