Spherical ASTM A514 Steel Powder, grade H

ASTM A514 Steel Spherical Powder, grade H, plate thickness 19 - 64 mm Product Information -:- For detailed product information, please contact sales. -: ASTM A514 Steel Spherical Powder, grade H, plate thickness 19 - 64 mm Synonyms -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Spherical ASTM A514 Steel Powder, grade H characteristics -:- For detailed product information, please contact sales. -: Spherical ASTM A514 Steel Powder, grade H 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 H 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 H Chemical Composition -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: ASTM A514 Steel, grade H, plate thickness 19 - 64 mm Product Information -:- For detailed product information, please contact sales. -: ## **Technical Data Sheet: ASTM A514 Steel, Grade H (Plate Thickness 19-64 mm / 0.75-2.5 in)** ### **1. Product Overview** ASTM A514 Grade H represents the pinnacle of commercially available high-strength structural steel plate technology for intermediate thickness applications. Designed to deliver exceptional strength-to-weight ratios, Grade H provides **minimum yield strengths of 100 ksi (690 MPa) in 19-38 mm thickness** and **90 ksi (620 MPa) in 38-64 mm thickness**, establishing it as the strongest practical option within the A514 specification for this thickness range. This quenched and tempered alloy steel achieves its superior mechanical properties through a precisely engineered chemical composition optimized for deep hardenability, enabling consistent through-thickness performance in heavy plate applications where maximum structural efficiency is critical. ### **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:** ASTM A20/A20M (General Requirements for Steel Plates) - **International Equivalents:** - **EN Standard:** EN 10025-6 Grade S690QL/QL1 (closest mechanical match) - **ISO Standard:** ISO 4950-3 Grade EQ 690 (equivalent quality class) - **JIS Standard:** JIS G3128 SHY685 (Japanese high-strength structural steel) - **GB/T Standard:** GB/T 16270 Q690D/E (Chinese high-strength structural steel) - **Offshore Standards:** API 2W Grade 60 (similar strength level for offshore applications) ### **3. Chemical Composition (Heat Analysis, % by Weight)** | Element | Min (%) | Max (%) | Metallurgical Function for Thick Plate | |---------|---------|---------|----------------------------------------| | Carbon (C) | 0.12 | 0.21 | Primary strength element, balanced for weldability and hardenability | | Manganese (Mn) | 0.95 | 1.30 | Critical for achieving deep hardenability in thick sections | | Phosphorus (P) | — | 0.035 | Strict impurity control for weldability | | Sulfur (S) | — | 0.040 | Impurity control, may be specified ≤0.010% for improved Z-properties | | Silicon (Si) | 0.40 | 0.80 | Deoxidizer and solid solution strengthener | | Chromium (Cr) | 0.50 | 0.80 | Enhances hardenability and provides moderate corrosion resistance | | Molybdenum (Mo) | 0.18 | 0.28 | Essential for maintaining strength during tempering of thick plates | | Nickel (Ni) | 0.25 | 0.50 | Improves toughness, particularly at mid-thickness | | Copper (Cu) | 0.20 | 0.40 | Atmospheric corrosion resistance | | Vanadium (V) | 0.03 | 0.08 | Grain refinement and precipitation strengthening | | Titanium (Ti) | 0.01 | 0.03 | Grain size control through nitride formation | | Zirconium (Zr) | 0.05 | 0.15 | Grain refinement and inclusion shape control | | **Boron (B)** | **0.001** | **0.005** | **Critical element for achieving through-thickness hardenability in 64 mm plate** | | **Calcium (Ca)** | **—** | **0.006** | **Often added (0.002-0.005%) for sulfide shape control in thick plate** | *Special Processing Note:* For plates exceeding 50 mm thickness, vacuum degassing is typically employed to minimize centerline segregation and hydrogen content. ### **4. Mechanical Properties by Thickness Range** **Minimum Required Properties per ASTM A514:** | Thickness Range | Yield Strength Min | Tensile Strength Range | Elongation in 2" Min | Reduction of Area Min | |-----------------|-------------------|----------------------|----------------------|----------------------| | **19-38 mm** | **100 ksi (690 MPa)** | 115-135 ksi (790-930 MPa) | 16% | 40% | | **38-51 mm** | **90 ksi (620 MPa)** | 105-125 ksi (725-860 MPa) | 16% | 40% | | **51-64 mm** | **90 ksi (620 MPa)** | 105-125 ksi (725-860 MPa) | 16% | 40% | **Typical Achieved Properties:** - **Yield Strength:** 105-115 ksi (725-795 MPa) for 19-38 mm; 95-105 ksi (655-725 MPa) for 38-64 mm - **Tensile Strength:** 120-130 ksi (825-895 MPa) for 19-38 mm; 110-120 ksi (760-825 MPa) for 38-64 mm - **Elongation:** 18-22% (typically exceeds minimum) - **Reduction of Area:** 45-60% - **Brinell Hardness:** 235-293 HBW (19-38 mm); 217-269 HBW (38-64 mm) **Toughness Properties:** - **Charpy V-Notch at -18°C (0°F):** 40-80 J (exceeds 27 J minimum) - **Through-Thickness Consistency:** Surface to mid-thickness toughness ratio typically >0.7 - **Z-Direction Properties:** Reduction of Area ≥25% when tested per ASTM A770 ### **5. Physical Properties** - **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) - **Specific Heat:** 0.46 kJ/kg·K at 20°C - **Atmospheric Corrosion Resistance:** Approximately 2× better than carbon steel ### **6. Heat Treatment & Microstructural Characteristics** - **Condition as Supplied:** Quenched and Tempered (Q&T) - **Quenching Method:** Intensive water quenching with agitation or accelerated polymer systems - **Tempering Range:** 1150-1250°F (621-677°C) - carefully controlled for thick sections - **Cooling Rate Control:** Critical for achieving consistent mid-thickness properties - **Microstructure:** Fine tempered martensite with minimal bainitic transformation at mid-thickness - **Prior Austenite Grain Size:** ASTM 6-8 (surface), ASTM 5-7 (mid-thickness) - **Hardenability (DI):** 6-8 inches (Jominy equivalent), sufficient for 64 mm thickness - **Segregation Control:** Vacuum degassing typically employed for plates >38 mm ### **7. Key Product Characteristics** 1. **Maximum Strength-to-Weight Ratio:** Highest practical strength level for structural applications in this thickness range 2. **Excellent Through-Thickness Consistency:** Minimized property degradation from surface to centerline 3. **Deep Hardenability:** Maintains strength and toughness at mid-thickness of 64 mm sections 4. **Good Weldability with Proper Procedures:** Designed for weldability despite ultra-high strength 5. **Superior Fatigue Performance:** Enhanced fatigue strength compared to lower strength grades 6. **Minimal Anisotropy:** Balanced longitudinal and transverse properties ### **8. Primary Applications** **Heavy Construction & Mining Equipment:** - Excavator boom sections (main chords and reinforcement plates) - Mining shovel dipper handles and boom components - Dragline machinery structural members - Large crane main boom sections and support structures **Bridge & Heavy Infrastructure:** - Long-span bridge tension members and gusset plates - Movable bridge machinery supports and counterweights - Offshore platform node connections and braces - Heavy industrial plant structural supports **Energy Sector Applications:** - Wind turbine tower flange connections (transition pieces) - Hydroelectric turbine components and support structures - Power generation equipment critical structural members - Oil and gas platform special structural components **Transportation & Heavy Haul:** - Specialized trailer main beams and bolster plates - Heavy haul truck chassis components - Railway bridge tension members - Port and container handling equipment structural components **Industrial Machinery:** - Large press frames and columns - Injection molding machine platens and tie bars - Rolling mill housing components - Heavy fabricating machinery bases and supports ### **9. Fabrication Guidelines** **Welding Requirements (Stringent Controls Required):** - **Filler Metals:** E11018-G, ER110S-G, or equivalent high-strength grades - **Preheat Temperatures:** - 19-25 mm: 250°F (121°C) minimum - 25-38 mm: 300°F (149°C) minimum - 38-64 mm: 350°F (177°C) minimum - **Interpass Temperature:** Maximum 400°F (204°C) - **Post-Weld Heat Treatment:** **Highly recommended** for thicknesses >25 mm; mandatory for >38 mm - **Welding Processes:** SAW with tandem wires for efficiency; FCAW and SMAW with strict control - **Essential Practice:** Ultra-low hydrogen procedures with baked electrodes and dry shielding gas **Cutting & Edge Preparation:** - **Plasma Cutting:** Preferred method up to 50 mm thickness - **Oxy-Fuel Cutting:** Requires preheat ≥300°F (149°C) and post-cut grinding - **Abrasive Waterjet:** Excellent for complex shapes with no thermal distortion - **Machined Edges:** Recommended for critical weld preparations - **UT After Cutting:** Recommended for thicknesses >38 mm **Machining Operations:** - **Tool Materials:** Premium carbide grades (C2/C3) or ceramic inserts for roughing - **Cutting Parameters:** 150-220 SFM for turning, moderate feeds - **Drilling:** Heavy-duty drills with peck cycle for holes deeper than 2× diameter - **Coolant:** High-pressure flood coolant essential - **Workholding:** Extremely rigid setups to prevent vibration **Forming & Bending:** - Minimum bend radius: 4-5× plate thickness - Cold forming possible for simple shapes with generous radii - Hot forming at 1650-1750°F (899-954°C) requires full re-heat treatment - Springback allowance: 12-18° for typical 90° bends ### **10. Quality Assurance & Testing** **Standard Testing per Heat:** - Tensile testing at surface and 1/4-thickness locations (longitudinal and transverse) - Charpy V-notch impact testing at specified temperatures - Hardness surveys across plate surfaces - Chemical analysis by optical emission spectroscopy **Supplementary Testing (Typically Specified for Thick Plate):** - **S1:** Ultrasonic examination per ASTM A578 Level 2 or higher - **S8:** Maximum tensile strength limitation - **S9:** Charpy testing from 1/2-thickness location - **S14:** Restricted chemistry variations (±20% of specified ranges) - **S17:** Vacuum degassing requirement for plates >38 mm - **Through-Thickness Testing:** Z-direction tensile testing per ASTM A770 **Non-Destructive Examination:** - **Ultrasonic Testing:** Full volume scanning for plates >38 mm - **Magnetic Particle Testing:** All cut edges and weld preparations - **Dye Penetrant Testing:** For surface examination of critical areas ### **11. Design Considerations for Thick Plate Applications** 1. **Section Size Effects:** Account for property variations through thickness in design calculations 2. **Fracture Control:** Implement fracture mechanics approach for thicknesses >38 mm 3. **Residual Stress Management:** Critical in design of welded thick plate structures 4. **Lamellar Tearing Prevention:** Careful joint design and consideration of Z-properties 5. **Fatigue Design:** Use appropriate reduction factors for thick sections in cyclic loading 6. **Welding Distortion Control:** Major consideration in fabrication planning ### **12. Comparison with Other A514 Grades (19-64 mm)** | Aspect | Grade H | Grade B | Grade F | |--------|---------|---------|---------| | **Yield Strength (19-38 mm)** | **100 ksi (690 MPa)** | 100 ksi (690 MPa) | 100 ksi (690 MPa) | | **Yield Strength (38-64 mm)** | **90 ksi (620 MPa)** | 90 ksi (620 MPa) | 90 ksi (620 MPa) | | **Strength Advantage** | Highest in family | Standard | Standard | | **Hardenability** | **Excellent (optimized for thick plate)** | Very Good | Very Good | | **Through-Thickness Consistency** | **Best in family** | Good | Very Good | | **Typical Applications** | Maximum efficiency structures | General high-strength | Low-temperature service | ### **13. Storage, Handling & Transportation** **Special Considerations for Heavy Plate:** - **Handling Equipment:** Requires heavy-duty cranes and lifting gear - **Storage Support:** Multiple supports to prevent sagging under self-weight - **Transportation:** Special permits often required for plates >50 mm thick - **Temperature Management:** Avoid thermal shock during handling - **Identification:** Permanent stamping plus painted markings for traceability ### **14. Technical Support Services** - Application engineering consultation - Welding procedure development and qualification support - Fabrication technique recommendations - Non-destructive testing coordination - Failure analysis and troubleshooting services - Custom processing and pre-machining services ### **15. Limitations & Special Considerations** 1. **Not Recommended For:** - Applications where lower strength grades are adequate - Highly corrosive environments without protection - Service temperatures above 800°F (427°C) - Applications with poor fatigue details or severe stress concentrations 2. **Economic Considerations:** - Premium material cost (15-30% above Grade B) - Higher fabrication costs due to specialized procedures - Extended lead times for thick plates with special requirements - May require additional testing and certification 3. **Performance Limitations:** - Toughness decreases at mid-thickness, particularly in thicker sections - More sensitive to welding imperfections than lower strength steels - Requires experienced fabricators with heavy plate capability ### **16. Environmental & Sustainability** - **Recyclability:** 100% recyclable with high scrap value - **Resource Efficiency:** Higher strength reduces material usage by 20-30% vs. 50 ksi steel - **Life Cycle Benefits:** Extended service life in properly designed applications - **Manufacturing Standards:** Produced in ISO 14001 certified facilities - **Regulatory Compliance:** Meets global environmental and chemical regulations ### **17. Industry Codes & References** - **AISC:** Steel Construction Manual - Chapter N (High-Strength Steel Design) - **AWS D1.1/D1.5:** Structural Welding Code - Steel / Bridges - **ASME Section VIII:** Division 2 - Alternative Rules - **API Standards:** Various for offshore and pressure applications - **AASHTO LRFD:** Bridge Design Specifications ### **18. Project Specification Guidelines** **Essential Specification Elements:** 1. Material grade and thickness range requirements 2. Mechanical property requirements by thickness 3. Toughness requirements (Charpy test temperature and values) 4. Supplementary requirements from ASTM A20/A20M 5. Non-destructive examination requirements 6. Welding and fabrication procedure requirements 7. Certification and documentation requirements 8. Special processing requirements (vacuum degassing, etc.) ### **19. Economic Analysis** **Cost-Benefit Considerations:** - **Material Cost:** Higher initial investment - **Fabrication Cost:** Increased due to specialized procedures - **Transportation Cost:** Reduced due to lighter structures - **Installation Cost:** Potentially reduced due to lighter components - **Life Cycle Cost:** Often favorable due to extended service life - **Insurance Implications:** May reduce insurance costs for properly designed structures ### **20. Future Developments** - **Advanced Processing:** Thermomechanical controlled processing (TMCP) applications - **Alloy Optimization:** Continued refinement for improved toughness - **Digital Integration:** Material digital passports for lifetime tracking - **Sustainability:** Lower carbon footprint manufacturing processes - **Joining Technologies:** Improved welding consumables and techniques ### **21. Disclaimer & Critical Notes** **Essential User Responsibilities:** 1. Verify suitability through comprehensive engineering analysis 2. Conduct complete welding procedure qualifications 3. Implement rigorous quality control throughout fabrication 4. Consider all service conditions and loading scenarios 5. Engage experienced fabricators with heavy plate expertise **Manufacturer's Limitations:** - Properties guaranteed only as tested per ASTM standards - Performance in service depends on proper design, fabrication, and maintenance - No warranty of fitness for particular application without specific agreement *For critical applications of ASTM A514 Grade H in 19-64 mm thickness, early engagement with both material supplier and experienced fabricators is strongly recommended to ensure successful project implementation and optimal performance.* -:- For detailed product information, please contact sales. -: ASTM A514 Steel, grade H, plate thickness 19 - 64 mm Specification Dimensions Size： Diameter 20-1000 mm Length <5923 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 H, plate thickness 19 - 64 mm Properties -:- For detailed product information, please contact sales. -:

Spherical ASTM A514 Steel Powder, grade H Particle Size Description -:- For detailed product information, please contact sales. -: Applications of Spherical ASTM A514 Steel Powder, grade H -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Applications of ASTM A514 Steel Spherical Powder, grade H, plate thickness 19 - 64 mm -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A514 Steel Spherical Powder, grade H, plate thickness 19 - 64 mm -:- For detailed product information, please contact sales. -:

Packing of ASTM A514 Steel Spherical Powder, grade H, plate thickness 19 - 64 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 2394 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