Spherical ASTM A514 Steel Powder, grade G

ASTM A514 Steel Spherical Powder, grade G, plate thickness ≤ 19 mm Product Information -:- For detailed product information, please contact sales. -: ASTM A514 Steel Spherical Powder, grade G, plate thickness ≤ 19 mm Synonyms -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Spherical ASTM A514 Steel Powder, grade G characteristics -:- For detailed product information, please contact sales. -: Spherical ASTM A514 Steel Powder, grade G Particle Size -:- For detailed product information, please contact sales. -: -:- -:- 0-15μm ,5-25μm, 15-45μm, 15-53μm,20-63um, 45-75μm, 45-105μm, 45-150μm ,75-150μm. (Various granularities can be customized according to customer requirements) -:- For detailed product information, please contact sales. -:

Spherical ASTM A514 Steel Powder, grade G Applicable processes -:- For detailed product information, please contact sales. -: Laser/electron beam additive manufacturing (SLM/EBM, 3D printing) Direct laser deposition (DLD) Used in thermal spray (TSA) Powder hot isostatic pressing (HIP) Metal injection molding (MIM) Powder metallurgy (PM) Laser cladding (LC), etc. -:- For detailed product information, please contact sales. -: Spherical ASTM A514 Steel Powder, grade G Chemical Composition -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: ASTM A514 Steel, grade G, plate thickness ≤ 19 mm Product Information -:- For detailed product information, please contact sales. -: ## **Technical Data Sheet: ASTM A514 Grade G Steel Plate (Thickness ≤ 19 mm / 0.75 in)** ### **1. Product Overview** ASTM A514 Grade G is a specialized high-strength, quenched and tempered alloy steel plate designed to provide exceptional atmospheric corrosion resistance combined with ultra-high strength in thin-section applications. As part of the A514 family's weathering steel grades, Grade G delivers a minimum yield strength of **100 ksi (690 MPa)** for thicknesses up to 19 mm while offering corrosion resistance approximately **four times greater than conventional carbon steel**. This grade is particularly distinguished by its balanced chemistry optimized for enhanced weldability and consistent properties in thin plates, making it ideal for exposed structural applications where both high strength and long-term durability are paramount. ### **2. International Standards & Specifications** - **Primary Standard:** ASTM A514/A514M - *Standard Specification for High-Yield-Strength, Quenched and Tempered Alloy Steel Plate, Suitable for Welding* - **Dimensional Standard:** ASTM A6/A6M - **Supplementary Standards:** May comply with ASTM A20 when specified - **International Equivalents:** - **EN Standard:** EN 10025-6 Grade S690QL (strength equivalent) + weathering characteristics of EN 10025-5 - **Weathering Steel Standards:** Comparable performance to ASTM A242/A588 but at significantly higher strength levels - **JIS Standard:** JIS G3128 SWH 685A (Japanese high-strength weathering steel) - **ISO Standard:** ISO 4950-3 EQ 690 with weathering steel requirements - **GB/T Standard:** GB/T 4171 Q690NH (Chinese weathering high-strength steel) ### **3. Chemical Composition (Heat Analysis, % by Weight)** | Element | Min (%) | Max (%) | Metallurgical Function | |---------|---------|---------|------------------------| | Carbon (C) | 0.11 | 0.21 | Balanced for strength and weldability in thin sections | | Manganese (Mn) | 0.70 | 1.20 | Enhances hardenability and solid solution strengthening | | Phosphorus (P) | — | 0.035 | Impurity control | | Sulfur (S) | — | 0.040 | Impurity control | | Silicon (Si) | 0.15 | 0.35 | Deoxidizer, optimized for weathering steel performance | | **Chromium (Cr)** | **0.30** | **0.65** | **Atmospheric corrosion resistance and hardenability** | | **Copper (Cu)** | **0.25** | **0.50** | **Primary weathering element for protective patina formation** | | Nickel (Ni) | 0.25 | 0.50 | Improves toughness and supports corrosion resistance | | Molybdenum (Mo) | 0.15 | 0.25 | Enhances hardenability and tempering resistance | | Vanadium (V) | 0.01 | 0.10 | Grain refinement and precipitation strengthening | | **Boron (B)** | **0.0005** | **0.005** | **Critical for achieving full hardenability in thin sections** | | **Zirconium (Zr)** | **—** | **0.15** | **Optional addition for grain refinement (typically 0.05-0.15%)** | **Distinguishing Feature:** Grade G's chemical composition is optimized for thin plates (≤19 mm), with particular attention to achieving full martensitic transformation during quenching while maintaining excellent weathering characteristics. ### **4. Mechanical & Physical Properties (For Thickness ≤ 19 mm)** | Property | Specification Requirement | Typical Value | Test Standard | |----------|--------------------------|---------------|-------------| | **Yield Strength (min)** | **100 ksi (690 MPa)** | 105 – 115 ksi (725 – 795 MPa) | ASTM A370 | | **Tensile Strength** | **115 – 135 ksi (790 – 930 MPa)** | 120 – 128 ksi (825 – 880 MPa) | ASTM A370 | | **Elongation in 2 in (50 mm) (min)** | **18%** | 20 – 24% | ASTM A370 | | **Reduction of Area (min)** | **40%** | 45 – 60% | ASTM A370 | | **Brinell Hardness** | **235 – 293 HBW** | 248 – 280 HBW | ASTM E10 | | **Charpy V-Notch Impact** | **20 ft-lb (27 J) min** at specified temp* | 40 – 70 J at -18°C (0°F) | ASTM A370 | | **Modulus of Elasticity** | — | 29,000 ksi (200 GPa) | — | | **Shear Modulus** | — | 11,200 ksi (77 GPa) | — | | **Poisson's Ratio** | — | 0.29 | — | | **Density** | — | 0.284 lb/in³ (7.85 g/cm³) | — | | **Thermal Conductivity** | — | 28.5 W/m·K at 100°C | — | | **Coefficient of Thermal Expansion** | — | 11.5 × 10⁻⁶/°C (20-100°C) | — | | **Atmospheric Corrosion Index** | — | ≥ 0.65 (Cu+Cr+Ni) per ASTM G101 | — | *Test temperature typically specified by purchaser; often -18°C (0°F) or -29°C (-20°F) ### **5. Heat Treatment & Microstructural Characteristics** - **Condition as Supplied:** Quenched and Tempered (Q&T) - **Quenching Method:** Accelerated cooling (water or polymer quench) - **Tempering Temperature:** 1150-1250°F (621-677°C) - **Microstructure:** Fine-grained tempered martensite - **Prior Austenite Grain Size:** ASTM 7 or finer - **Hardenability:** Excellent for thin sections due to boron addition - **Weathering Mechanism:** Forms dense, adherent α-FeOOH protective patina ### **6. Key Product Characteristics** 1. **Superior Weathering Resistance:** 4× better corrosion resistance than carbon steel; suitable for unpainted exposed structures 2. **High Strength-to-Weight Ratio:** Enables lightweight, efficient structural designs 3. **Excellent Weldability:** Designed for welding with proper low-hydrogen procedures 4. **Good Formability:** Can be cold formed with proper equipment and techniques 5. **Aesthetic Patina Development:** Develops attractive, protective rust appearance 6. **Consistent Properties:** Uniform mechanical properties through thickness in thin plates ### **7. Primary Applications** **Architectural & Exposed Structures:** - Architectural exposed structural elements requiring high strength - Sculptural and monumental structures - High-end building facades and supports - Signature bridge components **Transportation Infrastructure:** - Bridge components for aesthetic exposed applications - Highway sign support structures - Sound barrier wall structural components - Light rail and transit station structures **Industrial Applications:** - Exposed structural members in industrial plants - Material handling system supports in corrosive environments - Utility structures requiring low maintenance - Telecommunications tower components **Heavy Equipment:** - Excavator and crane components for port applications - Mining equipment structural components - Agricultural machinery exposed frames - Specialized vehicle components ### **8. Fabrication Guidelines** **Welding Requirements:** - **Filler Metals:** E11018-G, ER110S-G, or weathering steel specific electrodes - **Preheat Temperature:** 200-250°F (93-121°C) for thicknesses ≤19 mm - **Interpass Temperature:** Maximum 400°F (204°C) - **Post-Weld Heat Treatment:** Generally not required for thin sections - **Essential Practice:** Strict low-hydrogen procedures with baked electrodes **Cutting & Edge Preparation:** - **Plasma Cutting:** Preferred method for clean edges - **Laser Cutting:** Excellent for precision cutting - **Oxy-Fuel Cutting:** Acceptable with light grinding of cut edges - **Waterjet Cutting:** Suitable for complex shapes **Machining Operations:** - **Tool Materials:** Carbide inserts with positive rake geometry - **Cutting Parameters:** 150-250 SFM for turning, moderate feeds - **Coolant:** Water-soluble coolant recommended **Forming & Bending:** - Minimum bend radius: 2-3× plate thickness - Cold forming possible with proper equipment - Consider springback allowance in tooling design ### **9. Weathering Performance Guidelines** - **Patina Formation:** Requires 1-3 years for full development - **Initial Staining:** Runoff may stain adjacent materials during early exposure - **Surface Preparation:** Mill scale should weather naturally or be removed by abrasive blasting - **Environment Suitability:** Best in alternating wet/dry atmospheric conditions - **Maintenance:** Generally maintenance-free after patina formation ### **10. Quality Assurance & Testing** **Standard Testing:** - Tensile testing per ASTM A370 - Charpy V-notch impact testing at specified temperature - Hardness testing (Brinell preferred) - Chemical analysis by optical emission spectroscopy **Supplementary Testing (When Specified):** - Ultrasonic examination per ASTM A578 - Corrosion testing per ASTM G101 (weathering index calculation) - Macroetch examination for internal quality **Certification:** - Certified Mill Test Reports (CMTRs) with full traceability - Weathering steel performance certification available ### **11. Comparison with Other Weathering Grades** | Property | A514 Grade G | A514 Grade E | ASTM A588 | |----------|--------------|--------------|-----------| | **Yield Strength** | 100 ksi (690 MPa) | 100 ksi (690 MPa) | 50 ksi (345 MPa) | | **Corrosion Resistance** | 4× carbon steel | 4× carbon steel | 2× carbon steel | | **Primary Application** | Thin exposed structures | General weathering | General weathering | | **Weldability** | Excellent | Good | Good | | **Cost Factor** | Premium | Premium | Standard | ### **12. Storage & Handling** - Store in clean, dry conditions - Protect from contamination by dissimilar metals - Use proper lifting equipment to prevent edge damage - Maintain identification markings - Consider temporary protection for extended storage ### **13. Technical Support Services** - Welding procedure development - Fabrication technique consultation - Weathering performance guidance - Application suitability analysis - Custom processing services ### **14. Limitations & Special Considerations** 1. **Not Recommended For:** - Constant immersion or submerged service - High chloride environments without additional protection - Applications requiring bright metallic appearance 2. **Design Considerations:** - Allow for patina formation and initial runoff - Consider expansion/contraction in exposed applications - Account for possible staining of adjacent materials 3. **Temperature Limitations:** - Maximum service temperature: 800°F (427°C) intermittent - Minimum service temperature: -50°F (-46°C) with proper toughness specification ### **15. Environmental & Sustainability Benefits** - **Reduced Maintenance:** Eliminates need for painting and repainting - **Long Service Life:** Extended structural lifespan in exposed conditions - **Recyclability:** 100% recyclable at end of service life - **Reduced VOCs:** No paint emissions during service - **Sustainable Design:** Contributes to LEED and sustainable construction points ### **16. Project Specification Guidelines** When specifying Grade G for projects: 1. Clearly indicate thickness requirements and tolerances 2. Specify Charpy test temperature and energy requirements 3. Define weathering performance expectations 4. Include welding procedure qualification requirements 5. Address surface preparation and protection requirements 6. Specify certification and documentation requirements ### **17. Industry Codes & References** - **AISC:** Steel Construction Manual - **AWS D1.1:** Structural Welding Code - **AASHTO:** Bridge Design Specifications - **ASTM G101:** Guide for Estimating the Atmospheric Corrosion Resistance of Low-Alloy Steels ### **18. Disclaimer & Important Notes** This technical data sheet provides general information about ASTM A514 Grade G steel plate in thicknesses ≤19 mm. For specific applications: 1. Always consult the latest edition of ASTM A514/A514M 2. Verify actual properties against certified mill test reports 3. Conduct appropriate welding procedure qualifications 4. Consider local environmental conditions for weathering performance 5. Engage qualified engineers for critical designs 6. Manufacturer's warranty is limited to material compliance with specified standards *For project-specific technical support or to request certified test reports, please contact our technical service department with complete application details.* -:- For detailed product information, please contact sales. -: ASTM A514 Steel, grade G, plate thickness ≤ 19 mm Specification Dimensions Size： Diameter 20-1000 mm Length <5920 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 A514 Steel, grade G, plate thickness ≤ 19 mm Properties -:- For detailed product information, please contact sales. -:

Spherical ASTM A514 Steel Powder, grade G Particle Size Description -:- For detailed product information, please contact sales. -: Applications of Spherical ASTM A514 Steel Powder, grade G -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Applications of ASTM A514 Steel Spherical Powder, grade G, plate thickness ≤ 19 mm -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A514 Steel Spherical Powder, grade G, plate thickness ≤ 19 mm -:- For detailed product information, please contact sales. -:

Packing of ASTM A514 Steel Spherical Powder, grade G, plate thickness ≤ 19 mm -:- 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 Spherical Powder 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 2391 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