ASTM A225 Low Alloy Steel Sheet,Plate, Grade C

ASTM A225 Low Alloy Steel Sheet/Plate, Grade C Product Information -:- For detailed product information, please contact sales. -: ASTM A225 Low Alloy Steel Sheet/Plate, Grade C Synonyms -:- For detailed product information, please contact sales. -:

ASTM A225 Low Alloy Steel, Grade C Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: ASTM A225 Grade C Steel** **ASTM A225 Grade C** is a premium manganese-vanadium-nickel alloy steel plate representing the highest performance grade in the A225 specification. This enhanced variant offers superior mechanical properties and improved toughness characteristics, making it suitable for the most demanding pressure vessel and structural applications where exceptional performance is required. --- #### **1. International Standards & Grades** **Primary Standard:** **ASTM A225/A225M** - "Standard Specification for Pressure Vessel Plates, Alloy Steel, Manganese-Vanadium-Nickel" **Grade Classification:** - **Grade C** - Enhanced manganese-vanadium-nickel alloy steel - **Grade A** - Standard chemistry variant - **Grade B** - Alternative chemistry variant **International Equivalents:** - **EN 10028-3**: 15MnNi6-3 - **JIS G3119**: SPV 410 - **GB/T 713**: 15MnNi - **ISO 9328-3**: 15MnNi6-3 --- #### **2. Chemical Composition** The chemical composition requirements for ASTM A225 Grade C: | Element | Composition (Maximum %) | |---|---| | Carbon (C) | 0.23 | | Manganese (Mn) | 1.15-1.60 | | Phosphorus (P) | 0.035 | | Sulfur (S) | 0.040 | | Silicon (Si) | 0.30 | | Vanadium (V) | 0.10-0.20 | | Nickel (Ni) | 0.40-0.70 | **Key Composition Features:** - **Enhanced Chemistry**: Optimized balance for superior properties - **Manganese-Vanadium System**: Advanced strengthening mechanism - **Nickel Content**: Maintains excellent toughness - **Vanadium Optimization**: Improved precipitation strengthening --- #### **3. Physical & Mechanical Properties** **Mechanical Properties (for thicknesses ≤ 50 mm):** | Property | Value | |---|---| | **Tensile Strength** | 585-760 MPa (85-110 ksi) | | **Yield Strength (min.)** | 380 MPa (55 ksi) | | **Elongation in 2" (min.)** | 17% | | **Elongation in 8" (min.)** | 19% | **Enhanced Toughness Properties:** - **Charpy V-Notch Test Temperature**: -20°F (-29°C) - **Minimum Impact Energy**: 25 ft-lbf (34 J) - **Superior Toughness**: Enhanced fracture resistance compared to Grades A and B **Physical Properties:** - **Density**: 7.86 g/cm³ (0.284 lb/in³) - **Modulus of Elasticity**: 200 GPa (29,000 ksi) - **Thermal Conductivity**: 48.0 W/m·K - **Coefficient of Thermal Expansion**: 11.7 × 10⁻⁶/°C - **Specific Heat Capacity**: 470 J/kg·K --- #### **4. Product Applications** **Critical Pressure Vessels:** - High-pressure fusion welded vessels - Critical process reactors - Severe service boilers - Advanced pressure containers **Demanding Structural Applications:** - Heavy load-bearing structures - Critical support frameworks - High-stress structural components - Advanced engineering structures **Energy and Power Generation:** - High-pressure power plant components - Critical energy system structures - Advanced turbine supports - Severe service heat exchangers **Specialized Industrial Equipment:** - Heavy mining equipment - Advanced machinery components - Critical material handling systems - High-performance industrial structures --- #### **5. Fabrication Characteristics** **Welding Performance:** - **Excellent Weldability**: With proper procedure control - **Preheat Requirements**: 175-275°F (80-135°C) depending on thickness - **Post-Weld Heat Treatment**: Mandatory stress relieving - **Recommended Processes**: GMAW, FCAW, SAW (low-hydrogen) - **Filler Metals**: E9018-G, ER90S-G or equivalent **Forming & Machining:** - **Good Formability**: Suitable for demanding forming operations - **Machinability**: Fair (approximately 50% of B1112 steel) - **Cutting Methods**: Plasma, laser, and waterjet cutting preferred - **Bend Performance**: Excellent for critical applications **Heat Treatment:** - Supplied in normalized and tempered condition - Normalizing temperature: 1600-1700°F (870-925°C) - Tempering temperature: 1100-1200°F (595-650°C) - Enhanced microstructural control **Quality Assurance:** - **Enhanced Impact Testing**: Higher energy requirements - **Comprehensive Chemical Analysis**: Full certification - **Extended Mechanical Testing**: Multiple test verification - **Stringent Quality Standards**: Exceeds standard requirements --- ### **Technical Summary** ASTM A225 Grade C represents the premium grade in the manganese-vanadium-nickel alloy steel series, offering enhanced mechanical properties and superior performance characteristics. With a minimum yield strength of 55 ksi (380 MPa) and improved impact energy requirements, this grade provides significant advantages for the most demanding applications. The optimized chemical composition and enhanced processing ensure consistent high performance in critical pressure vessel and structural applications. The 10% strength advantage over Grades A and B, combined with superior toughness properties, makes Grade C particularly valuable for applications where maximum reliability and performance are essential. While requiring more careful fabrication control and stringent quality assurance measures, Grade C delivers exceptional performance in welded constructions and critical structural components. The material's enhanced properties provide engineers with additional design flexibility and safety margins for the most challenging applications. ASTM A225 Grade C has established itself as the material of choice for critical pressure vessels, advanced structural frameworks, and demanding industrial applications where the highest levels of performance, reliability, and safety are required. Its proven track record in severe service conditions ensures continued preference for engineering projects where failure is not an option. -:- For detailed product information, please contact sales. -: ASTM A225 Low Alloy Steel, Grade C Specification Dimensions Size： Diameter 20-1000 mm Length <4341 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 A225 Low Alloy Steel, Grade C Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A225 Low Alloy Steel Sheet,Plate, Grade C -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A225 Low Alloy Steel Sheet,Plate, Grade C -:- For detailed product information, please contact sales. -:

Packing of ASTM A225 Low Alloy Steel Sheet/Plate, Grade C -:- 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 Sheet/Plate 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 812 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