ASTM A607 Steel Rod/Bar, grade 45

ASTM A607 Steel Rod, grade 45, hot rolled Product Information -:- For detailed product information, please contact sales. -: ASTM A607 Steel Rod, grade 45, hot rolled Synonyms -:- For detailed product information, please contact sales. -:

ASTM A607 Steel, grade 45, hot rolled Product Information -:- For detailed product information, please contact sales. -: ### **ASTM A607 Grade 45: High-Strength Low-Alloy Columbium or Vanadium Steel (Hot-Rolled)** #### **1. Overview** ASTM A607 Grade 45 is a **high-strength low-alloy (HSLA) steel** supplied in **hot-rolled form**, strengthened by **columbium (niobium) or vanadium** additions. This grade offers a minimum yield strength of 45 ksi (310 MPa) and is designed for applications requiring higher strength than conventional carbon steels, along with improved atmospheric corrosion resistance and good weldability. The hot-rolled production process makes it cost-effective for structural applications where weight reduction and durability are important. #### **2. Chemical Composition** The chemical composition is balanced for strength and weldability: | Element | Composition (%) | |---------|-----------------| | Carbon (C) | 0.22 max | | Manganese (Mn) | 1.25 max | | Phosphorus (P) | 0.04 max | | Sulfur (S) | 0.05 max | | Silicon (Si) | 0.30 max | | Columbium (Cb) | 0.005 - 0.05 | | or Vanadium (V) | 0.01 - 0.10 | **Key Composition Features:** - **Columbium or Vanadium Addition**: Provides precipitation strengthening through carbonitride formation - **Controlled Carbon Content**: Ensures good weldability while maintaining strength - **Manganese Enhancement**: Contributes to solid solution strengthening - **Low Silicon Content**: Maintains good formability and surface quality #### **3. Physical & Mechanical Properties** **Mechanical Properties:** | Property | Requirement | |----------|-------------| | **Tensile Strength** | 60 ksi min (415 MPa min) | | **Yield Strength** | 45 ksi min (310 MPa min) | | **Elongation in 2 inches** | 24% min | | **Bend Test** | Bend 180° around diameter equal to thickness | **Enhanced Performance Characteristics:** - **High Strength-to-Weight Ratio**: Enables lighter structural designs - **Good Weldability**: Suitable for all conventional welding processes - **Improved Toughness**: Better impact resistance than carbon steels - **Atmospheric Corrosion Resistance**: Superior to carbon steels **Physical Properties (Typical):** - **Density**: 0.284 lb/in³ (7,850 kg/m³) - **Modulus of Elasticity**: 29,000 ksi (200 GPa) - **Poisson's Ratio**: 0.29 - **Coefficient of Thermal Expansion**: 6.5 × 10⁻⁶/°F (11.7 × 10⁻⁶/°C) - **Thermal Conductivity**: 44.0 W/m·K at 212°F (100°C) #### **4. Product Applications** Grade 45 is widely used in structural and manufacturing applications: **Construction and Building:** - Structural framing members - Roof and floor decking - Building columns and beams - Light structural supports **Transportation Equipment:** - Truck frame components - Trailer structural members - Automotive chassis parts - Railway car components **Industrial Applications:** - Equipment support frames - Material handling components - Machinery structural parts - Storage rack systems **Agricultural Equipment:** - Tractor components - Implement frames - Equipment structural members - Support structures #### **5. International Standards & Equivalents** | Region/Country | Standard | Equivalent Grade | Notes | |----------------|----------|------------------|-------| | **International** | **ISO 4951** | E355 | High yield strength steel | | **Europe** | **EN 10025-4** | S355MC | Thermomechanical rolled steel | | **Japan** | **JIS G3114** | SAPH 45 | Hot-rolled HSLA steel | | **China** | **GB/T 1591** | Q345 | Low alloy high strength steel | **A607 Grade Comparison:** | Grade | Yield Strength min | Tensile Strength min | Typical Applications | |-------|-------------------|---------------------|---------------------| | **Grade 45** | 45 ksi | 60 ksi | Light structural applications | | **Grade 50** | 50 ksi | 65 ksi | General structural uses | | **Grade 55** | 55 ksi | 70 ksi | Higher strength applications | #### **6. Fabrication & Quality Assurance** **Hot-Rolling Process Features:** - **Rolling Temperature**: Typically 1700-2200°F (925-1200°C) - **Surface Scale**: Removed by pickling or shot blasting - **Dimensional Tolerances**: Commercial quality standards - **Surface Finish**: Standard hot-rolled finish **Forming and Fabrication:** - **Cold Bending**: Suitable for moderate bending operations - **Punching and Shearing**: Good performance with proper tooling - **Welding**: All standard processes applicable - **Machining**: Fair machinability with proper techniques **Welding Considerations:** - **Pre-heat Requirements**: Generally not required for thin sections - **Welding Processes**: SMAW, GMAW, FCAW all suitable - **Consumables**: Matching strength electrodes recommended - **Heat Input Control**: Moderate control required **Quality Control Requirements:** - **Tension Tests**: From each heat or lot - **Bend Tests**: Required to verify ductility - **Chemical Analysis**: For each heat of steel - **Surface Inspection**: Visual examination for defects --- **Technical Advantages:** - **Cost-effective** high-strength alternative to carbon steel - **Good strength-to-weight ratio** for economical designs - **Improved atmospheric corrosion resistance** - **Excellent weldability** and formability **Design Considerations:** - **Utilize higher strength** for weight reduction - **Consider corrosion protection** for exposed applications - **Account for hot-rolled tolerances** in designs - **Optimize for fabrication efficiency** **Service Limitations:** - **Not recommended** for pressure vessel applications - **Limited low-temperature toughness** for cryogenic service - **Corrosion protection** needed for severe environments - **Temperature limit**: 800°F (425°C) for structural applications **Disclaimer:** This technical information is for reference purposes only. For structural applications, consult the latest ASTM A607 specification and applicable building codes. Material selection should consider specific service conditions, loading requirements, and environmental factors. All designs must be approved by qualified engineers and comply with relevant construction standards and safety regulations. -:- For detailed product information, please contact sales. -: ASTM A607 Steel, grade 45, hot rolled Specification Dimensions Size： Diameter 20-1000 mm Length <4486 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 A607 Steel, grade 45, hot rolled Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A607 Steel Rod, grade 45, hot rolled -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A607 Steel Rod, grade 45, hot rolled -:- For detailed product information, please contact sales. -:

Packing of ASTM A607 Steel Rod, grade 45, hot rolled -:- 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 957 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