ASTM A633 HSLA Steel Grade C

ASTM A633 HSLA Steel Grade C, Thickness < 65 mm (2.5 in.) Product Information -:- For detailed product information, please contact sales. -: ASTM A633 HSLA Steel Grade C, Thickness < 65 mm (2.5 in.) Synonyms -:- For detailed product information, please contact sales. -:

ASTM A633 HSLA Steel Grade C, Thickness < 65 mm (2.5 in.) Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: ASTM A633 Grade C HSLA Steel (Thickness < 65 mm)** **ASTM A633 Grade C** is a normalized high-strength low-alloy structural steel plate designed for applications requiring superior toughness at low temperatures. As part of the ASTM A633 standard, Grade C offers higher strength levels than Grades A and B, making it suitable for critical structures in demanding environmental conditions. The thickness range **below 65 mm (2.5 inches)** represents the most common application thickness where optimal toughness properties can be maintained. --- #### **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:** S355N (Similar strength level, normalized) * **ISO 4950:** GR 3 (High yield strength structural steels) * **JIS G3126:** S355NL (Low temperature service) * **GB/T 1591:** Q355D (Chinese equivalent) --- #### **2. Chemical Composition (Heat Analysis, %)** | Element | Composition Range | Notes | |---------|-------------------|-------| | **Carbon (C)** | 0.20 max | Controlled for weldability | | **Manganese (Mn)** | 1.15-1.50 | Enhances strength and hardenability | | **Phosphorus (P)** | 0.04 max | Impurity control | | **Sulfur (S)** | 0.05 max | Impurity control | | **Silicon (Si)** | 0.15-0.50 | Deoxidizer and strength enhancer | | **Copper (Cu)** | 0.20 min | Corrosion resistance | | **Columbium (Cb)** | 0.005-0.05 | Grain refinement | | **Vanadium (V)** | 0.01-0.10 | Precipitation strengthening | *Note: The microalloying elements (Cb, V) work synergistically to provide grain refinement and precipitation strengthening during normalizing.* --- #### **3. Mechanical Properties (Thickness < 65 mm)** **Tensile Properties:** | Property | Requirement | Typical Value | |----------|--------------|---------------| | **Yield Strength** | 50 ksi min (345 MPa) | 55-65 ksi (380-450 MPa) | | **Tensile Strength** | 70 ksi min (485 MPa) | 75-85 ksi (515-585 MPa) | | **Elongation** | 21% min in 2" | 23-28% | **Impact Toughness (Charpy V-Notch):** | Test Temperature | Minimum Requirement | |------------------|---------------------| | **-75°F (-60°C)** | 15 ft-lb (20 J) min | | **-50°F (-45°C)** | Typically 25-40 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:** 6.5×10⁻⁶/°F (11.7×10⁻⁶/°C) * **Thermal Conductivity:** 41.2 W/m·K at 212°F (100°C) * **Specific Heat:** 450 J/kg·K --- #### **5. Product Applications** **Structural Applications:** * Offshore drilling structures and platforms * Bridge components in cold climates * Building construction in seismic zones * Mining equipment and supporting structures * Heavy-duty truck frames and trailers **Specialized Applications:** * Pressure vessel components * Crane booms and structural members * Wind turbine towers * Construction machinery in arctic conditions --- #### **6. Key Advantages** * **Excellent Low-Temperature Toughness:** Maintains impact resistance down to -75°F (-60°C) * **Enhanced Strength:** Higher yield strength than Grades A and B * **Good Weldability:** Low carbon equivalent (typically ~0.40-0.45%) * **Atmospheric Corrosion Resistance:** Copper content provides improved weather resistance * **Normalized Microstructure:** Ensures uniform properties throughout plate thickness --- #### **7. Fabrication Notes** **Welding:** * Preheating: 200-300°F (95-150°C) for thicker sections * Recommended processes: SMAW, GMAW, FCAW * Post-weld heat treatment generally not required **Forming:** * Good cold forming characteristics * Can be hot-formed at 1550-1700°F (845-925°C) **Machining:** * Readily machinable in normalized condition * Standard tooling with positive rake angles recommended --- **Disclaimer:** This technical overview is based on typical ASTM A633 Grade C requirements. For specific project applications, always consult the latest ASTM standard and relevant material certification data. The properties may vary slightly between manufacturers and specific heat lots. -:- For detailed product information, please contact sales. -: ASTM A633 HSLA Steel Grade C, Thickness < 65 mm (2.5 in.) Specification Dimensions Size： Diameter 20-1000 mm Length <4500 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 C, Thickness < 65 mm (2.5 in.) Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A633 HSLA Steel Grade C, Thickness < 65 mm (2.5 in.) -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A633 HSLA Steel Grade C, Thickness < 65 mm (2.5 in.) -:- For detailed product information, please contact sales. -:

Packing of ASTM A633 HSLA Steel Grade C, Thickness < 65 mm (2.5 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 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 971 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