ASTM A633 HSLA Steel Wire Grade D

ASTM A633 HSLA Steel Wire Grade D, Thickness 65 to 100 mm (2.5 to 4 in.) Product Information -:- For detailed product information, please contact sales. -: ASTM A633 HSLA Steel Wire Grade D, Thickness 65 to 100 mm (2.5 to 4 in.) Synonyms -:- For detailed product information, please contact sales. -:

ASTM A633 HSLA Steel Grade D, Thickness 65 to 100 mm (2.5 to 4 in.) Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: ASTM A633 Grade D HSLA Steel (Thickness 65-100 mm)** **ASTM A633 Grade D** represents the premium high-strength grade within the ASTM A633 specification, specifically engineered for heavy-section applications requiring exceptional strength and toughness. For the **65-100 mm (2.5-4 inch)** thickness range, this normalized high-strength low-alloy steel provides an outstanding combination of mechanical properties that make it suitable for the most demanding structural applications in extreme service conditions, including arctic environments and critical infrastructure projects. --- #### **1. Key International Standards** * **Primary Standard:** **ASTM A633/A633M** - Standard Specification for Normalized High-Strength Low-Alloy Structural Steel Plates * **Related International Standards:** * **EN 10025-4:** S420N (Similar strength level, normalized condition) * **ISO 4950:** GR 4 Type 3 (High yield strength structural steels) * **JIS G3126:** S420NL (Low temperature service application) * **GB/T 1591:** Q420D (Chinese equivalent for low temperature service) * **CSA G40.21:** 420W (Canadian structural steel equivalent) --- #### **2. Chemical Composition (Heat Analysis, %)** | Element | Composition Range | Notes | |---------|-------------------|-------| | **Carbon (C)** | 0.22 max | Optimized for strength maintenance in heavy sections | | **Manganese (Mn)** | 1.30-1.60 | Enhanced for through-thickness hardenability | | **Phosphorus (P)** | 0.04 max | Strict control for improved Z-direction properties | | **Sulfur (S)** | 0.05 max | Low levels essential for heavy plate integrity | | **Silicon (Si)** | 0.15-0.50 | Deoxidizer and solid solution strengthener | | **Copper (Cu)** | 0.20 min | Atmospheric corrosion resistance | | **Columbium (Cb)** | 0.005-0.05 | Grain refinement in heavy sections | | **Vanadium (V)** | 0.01-0.10 | Precipitation strengthening | *Note: Chemistry is carefully balanced to maintain high strength and toughness through the entire thickness of heavy plates, with particular attention to microalloying elements' distribution.* --- #### **3. Mechanical Properties (Thickness 65-100 mm)** **Tensile Properties:** | Property | Requirement | Typical Value | |----------|--------------|---------------| | **Yield Strength** | 55 ksi min (380 MPa) | 58-68 ksi (400-470 MPa) | | **Tensile Strength** | 75 ksi min (515 MPa) | 78-88 ksi (540-605 MPa) | | **Elongation** | 18% min in 2" | 19-23% | | **Reduction of Area** | 40% min | 42-50% | **Impact Toughness (Charpy V-Notch):** | Test Temperature | Minimum Requirement | Typical Value | |------------------|---------------------|---------------| | **-75°F (-60°C)** | 15 ft-lb (20 J) min | 20-35 ft-lb | | **-100°F (-75°C)** | - | 15-25 ft-lb | --- #### **4. Physical Properties** * **Density:** 0.284 lb/in³ (7,850 kg/m³) * **Modulus of Elasticity:** 29,000 ksi (200 GPa) * **Poisson's Ratio:** 0.29 * **Thermal Expansion:** 6.4×10⁻⁶/°F (11.5×10⁻⁶/°C) * **Thermal Conductivity:** 40.2 W/m·K at 212°F (100°C) * **Specific Heat:** 450 J/kg·K * **Transformations:** Ac1 ~ 1330°F (721°C), Ac3 ~ 1475°F (802°C) --- #### **5. Product Applications** **Heavy Structural Applications:** * Offshore platform critical nodes and leg sections * Arctic bridge girders and support structures * Power plant main structural frameworks * Heavy mining equipment structural components * Shipbuilding keel plates and critical hull members **Specialized Heavy-Section Uses:** * Pressure vessel shells for low-temperature service * Hydraulic turbine components and large bearings * Large diameter penstocks and water gates * Construction machinery main frames and undercarriages * Crane main boom sections and heavy lift equipment --- #### **6. Key Advantages for Heavy Sections** * **Superior Through-Thickness Properties:** Normalizing ensures consistent properties across entire heavy section * **Minimal Strength Degradation:** Maintains high strength levels in thick plates * **Excellent Z-Direction Properties:** Enhanced resistance to lamellar tearing in heavy fabrications * **Exceptional Low-Temperature Performance:** Maintains toughness down to -100°F (-75°C) * **Cost-Effective High Strength:** Provides quenched and tempered steel performance at lower cost --- #### **7. Fabrication Considerations for Heavy Plates** **Welding Requirements:** * Preheating: 300-400°F (150-200°C) depending on exact thickness and restraint * Interpass temperature: 400-500°F (200-260°C) maximum * Low hydrogen processes essential (FCAW, SAW, GMAW) * PWHT recommended for highly restrained joints at 1100-1150°F (595-620°C) **Normalizing Cycle for Heavy Plates:** * Temperature: 1650-1700°F (900-925°C) * Extended soaking time: 30-60 minutes per inch of thickness * Controlled cooling in still air to ensure uniform microstructure **Machining & Forming:** * Good machinability with proper tool geometry and cooling * Hot forming recommended above 1550°F (845°C) * Cold forming requires adequate radius and proper equipment --- **Technical Note:** For thicknesses 65-100 mm, the extended normalizing cycle is crucial for achieving the specified mechanical properties through the entire cross-section. The chemistry is optimized to maintain the high strength characteristic of Grade D while ensuring adequate toughness in heavy sections. **Disclaimer:** This technical overview provides general information. For specific applications of ASTM A633 Grade D in heavy sections, always consult the latest ASTM standard and manufacturer's certification data. Special considerations for welding and fabrication of these high-strength heavy plates should be addressed through qualified welding procedures and experienced engineering oversight. -:- For detailed product information, please contact sales. -: ASTM A633 HSLA Steel Grade D, Thickness 65 to 100 mm (2.5 to 4 in.) Specification Dimensions Size： Diameter 20-1000 mm Length <4503 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 A633 HSLA Steel Grade D, Thickness 65 to 100 mm (2.5 to 4 in.) Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A633 HSLA Steel Wire Grade D, Thickness 65 to 100 mm (2.5 to 4 in.) -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A633 HSLA Steel Wire Grade D, Thickness 65 to 100 mm (2.5 to 4 in.) -:- For detailed product information, please contact sales. -:

Packing of ASTM A633 HSLA Steel Wire Grade D, Thickness 65 to 100 mm (2.5 to 4 in.) -:- 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 Wire 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 974 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