ASTM A573 Steel Rod/Bar, grade 65

ASTM A573 Steel Rod, grade 65 Product Information -:- For detailed product information, please contact sales. -: ASTM A573 Steel Rod, grade 65 Synonyms -:- For detailed product information, please contact sales. -:

ASTM A573 Steel, grade 65 Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: ASTM A573 Grade 65 Steel** **ASTM A573 Grade 65** is a medium-strength carbon steel plate classified under the specification for structural carbon steel plates of improved toughness. This grade provides a minimum yield strength of **35 ksi (240 MPa)** and is characterized by enhanced notch toughness properties compared to conventional carbon steels. The "65" designation refers to the minimum tensile strength in ksi units, positioning this grade as an intermediate strength material with superior impact resistance for structural applications requiring reliable performance under dynamic loading conditions. --- #### **1. International Standards & Grades** **Primary Standard:** **ASTM A573/A573M** - "Standard Specification for Structural Carbon Steel Plates of Improved Toughness" **Grade Classification:** - **Grade 65** [450 MPa tensile strength] - Minimum tensile strength 65 ksi - Other grades in A573 series: 58 and 70 **International Equivalents:** - **EN 10025-2**: S275JR/S275J0 - **JIS G3101**: SM490YA - **GB/T 700**: Q275 - **ISO 630-2**: E275B --- #### **2. Chemical Composition** The chemical composition requirements for ASTM A573 Grade 65: | Element | Composition (Maximum %) | |---|---| | Carbon (C) | 0.23 | | Manganese (Mn) | 0.85-1.20 | | Phosphorus (P) | 0.035 | | Sulfur (S) | 0.040 | | Silicon (Si) | 0.15-0.40 | **Key Composition Features:** - **Optimized Carbon Level**: Balances strength and weldability - **Enhanced Manganese**: Increased range for improved strength and toughness - **Silicon Control**: Provides effective deoxidation and strength enhancement - **Impurity Restrictions**: Controlled sulfur and phosphorus for better impact properties --- #### **3. Physical & Mechanical Properties** **Mechanical Properties:** | Property | Value | |---|---| | **Tensile Strength** | 450-530 MPa (65-77 ksi) | | **Yield Strength (min.)** | 240 MPa (35 ksi) | | **Elongation in 2" (min.)** | 19% | | **Elongation in 8" (min.)** | 21% | **Impact Toughness Properties:** - **Charpy V-Notch Test Temperature**: 70°F (21°C) - **Minimum Impact Energy**: 20 ft-lbf (27 J) **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**: 51.9 W/m·K - **Coefficient of Thermal Expansion**: 11.7 × 10⁻⁶/°C - **Specific Heat Capacity**: 486 J/kg·K --- #### **4. Product Applications** **Structural Engineering:** - Bridge components and girders - Building structural frames - Industrial plant structures - Seismic-resistant construction elements **Heavy Machinery:** - Construction equipment frames - Mining machinery components - Crane and hoist structural members - Heavy press frames **Transportation Infrastructure:** - Bridge bearing components - Heavy-duty guard rail systems - Sign support structures - Railway infrastructure components **Energy Sector:** - Power plant structural members - Transmission tower components - Wind turbine structural parts - Hydroelectric plant structures **Industrial Equipment:** - Heavy-duty storage racks - Process equipment supports - Material handling structures - Industrial platform systems --- #### **5. Fabrication Characteristics** **Welding Performance:** - **Excellent Weldability**: Suitable for all common welding processes - **Preheat Guidelines**: Recommended for thicknesses over 1 inch - **Recommended Processes**: SMAW, GMAW, FCAW, SAW - **Filler Metals**: E70XX series electrodes **Forming & Machining:** - **Good Formability**: Adequate for most cold forming operations - **Bend Radius**: Typically 2t for 90° bends - **Machinability**: Good (approximately 60% of B1112 steel) - **Shearing & Punching**: Performs well with proper tool maintenance **Heat Treatment:** - Supplied in as-rolled condition - Normalizing available for enhanced properties - Stress relieving recommended for complex fabrications **Quality Assurance:** - Charpy V-Notch impact testing required - Multiple test locations per plate as specified - Full certification of mechanical properties --- ### **Technical Summary** ASTM A573 Grade 65 occupies an important position in the family of improved toughness structural steels, offering a balanced combination of medium strength and enhanced impact resistance. The grade's controlled chemical composition and manufacturing process ensure consistent mechanical properties with reliable notch toughness, making it particularly suitable for applications where dynamic loading or vibration resistance is critical. Its superior toughness characteristics compared to conventional carbon steels of similar strength levels provide an added margin of safety in structural applications. The material's excellent weldability and formability, combined with certified impact properties, make it a preferred choice for bridge construction, industrial structures, and heavy equipment components. ASTM A573 Grade 65 represents an optimal solution for engineers seeking improved performance characteristics without moving to higher-cost alloy steels, providing reliable service in demanding structural applications where toughness and durability are essential requirements. -:- For detailed product information, please contact sales. -: ASTM A573 Steel, grade 65 Specification Dimensions Size： Diameter 20-1000 mm Length <4299 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 A573 Steel, grade 65 Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A573 Steel Rod, grade 65 -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A573 Steel Rod, grade 65 -:- For detailed product information, please contact sales. -:

Packing of ASTM A573 Steel Rod, grade 65 -:- 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 Rod 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 770 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