ASTM A611 Steel Tube,Pipe, grade B

ASTM A611 Steel Tube, grade B Product Information -:- For detailed product information, please contact sales. -: ASTM A611 Steel Tube, grade B Synonyms -:- For detailed product information, please contact sales. -:

ASTM A611 Steel, grade B Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: ASTM A611 Grade B Steel** **ASTM A611 Grade B** is a cold-rolled carbon steel sheet classified as a structural quality material with improved strength characteristics compared to Grade A. This specification covers steel sheets produced to meet specific mechanical property requirements, with Grade B offering a balanced combination of moderate strength and good formability. The material is particularly suitable for applications requiring enhanced load-bearing capacity while maintaining reasonable manufacturing characteristics for formed components. --- #### **1. International Standards & Grades** **Primary Standard:** **ASTM A611/A611M** - "Standard Specification for Structural Quality Cold-Rolled Carbon Steel Sheet" **Grade Classification:** - **Grade B** - Minimum yield strength 30 ksi (205 MPa) - Other grades in A611 series: A, C, D **International Equivalents:** - **EN 10130**: DC03/DC04 - **JIS G3141**: SPCD - **GB/T 5213**: DC03/DC04 - **ISO 3574**: CR2/CR3 --- #### **2. Chemical Composition** The typical chemical composition requirements for ASTM A611 Grade B: | Element | Composition (Maximum %) | |---|---| | Carbon (C) | 0.10-0.15 | | Manganese (Mn) | 0.50-0.80 | | Phosphorus (P) | 0.03 | | Sulfur (S) | 0.035 | | Silicon (Si) | 0.10 | **Key Composition Features:** - **Moderate Carbon Content**: Provides increased strength while maintaining formability - **Enhanced Manganese**: Contributes to solid solution strengthening - **Controlled Impurities**: Maintains good ductility and weldability - **Balanced Chemistry**: Optimized for stamping and moderate forming operations --- #### **3. Physical & Mechanical Properties** **Mechanical Properties:** | Property | Value | |---|---| | **Tensile Strength** | 340-450 MPa (49-65 ksi) | | **Yield Strength (min.)** | 205 MPa (30 ksi) | | **Elongation in 2" (min.)** | 22% | | **Hardness (HRB)** | 50-70 | **Physical Properties:** - **Density**: 7.85 g/cm³ (0.284 lb/in³) - **Modulus of Elasticity**: 200 GPa (29,000 ksi) - **Poisson's Ratio**: 0.29 - **Thermal Conductivity**: 51.5 W/m·K - **Coefficient of Thermal Expansion**: 11.6 × 10⁻⁶/°C - **Electrical Resistivity**: 0.18 μΩ·m --- #### **4. Product Applications** **Automotive Components:** - Seat adjustment mechanisms - Safety belt components - Door impact beams - Chassis reinforcement parts **Construction Products:** - Structural framing members - Roof decking components - Wall support elements - Building hardware components **Furniture and Fixtures:** - Heavy-duty shelving systems - Office furniture structural parts - Display rack components - Storage cabinet frames **Industrial Equipment:** - Machinery guards and covers - Equipment housing parts - Conveyor system components - Material handling containers **Consumer Products:** - Appliance structural frames - Tool storage components - Recreational equipment parts - Outdoor product structures --- #### **5. Fabrication Characteristics** **Welding Performance:** - **Good Weldability**: Compatible with most welding processes - **Minimal Preheat Requirements**: Generally not required - **Recommended Processes**: Resistance welding, GMAW, GTAW - **Filler Metals**: ER70S-6 or equivalent **Forming Characteristics:** - **Good Formability**: Suitable for moderate drawing and bending - **Minimum Bend Radius**: 0.75t for 90° bends - **Springback**: Predictable and manageable - **Surface Quality**: Excellent for finishing operations **Machining & Cutting:** - **Fair Machinability**: Acceptable for most machining operations - **Shearing Quality**: Good edge quality with proper tooling - **Punching Performance**: Suitable for production punching - **Laser Cutting**: Produces clean, precise edges **Surface Treatment:** - **Excellent Painting Characteristics**: Good adhesion and finish quality - **Plating Suitability**: Responds well to various plating processes - **Conversion Coatings**: Compatible with phosphating and chromating - **Powder Coating**: Provides durable finished appearance --- ### **Technical Summary** ASTM A611 Grade B represents an intermediate-grade cold-rolled steel that offers an optimal balance between enhanced strength and maintained formability. Positioned between the highly formable Grade A and the higher-strength Grade C, this material provides manufacturers with a versatile option for applications requiring improved load-bearing capacity without sacrificing manufacturing efficiency. The moderate carbon and manganese content deliver increased strength while preserving adequate ductility for most forming operations. Grade B's consistent mechanical properties and reliable performance make it particularly valuable for automotive safety components, structural furniture parts, and industrial equipment where both strength and manufacturability are essential. The material's predictable behavior during fabrication and excellent surface characteristics ensure consistent quality in finished products across various manufacturing sectors. -:- For detailed product information, please contact sales. -: ASTM A611 Steel, grade B Specification Dimensions Size： Diameter 20-1000 mm Length <4302 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. -: ASTM A611 Steel, grade B Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A611 Steel Tube, grade B -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A611 Steel Tube, grade B -:- For detailed product information, please contact sales. -:

Packing of ASTM A611 Steel Tube, grade B -:- 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 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 773 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