ASTM A414 Grade G Pressure Vessel Steel, Composition Spec

ASTM A414 Grade G Pressure Vessel Steel, Composition Spec Product Information -:- For detailed product information, please contact sales. -: ASTM A414 Grade G Pressure Vessel Steel, Composition Spec Synonyms -:- For detailed product information, please contact sales. -:

ASTM A414 Grade G Pressure Vessel Steel, Composition Spec Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: ASTM A414 / A414M Grade G Pressure Vessel Steel** **1. Overview** ASTM A414 / A414M Grade G represents the highest strength grade within the A414 carbon steel series for pressure vessel applications. This grade provides maximum mechanical properties among the standard A414 grades while maintaining adequate fabricability for pressure containment applications requiring superior strength characteristics. **2. Key International Standards** * **Primary Standard:** **ASTM A414 / A414M** - Standard Specification for Carbon Steel Sheets for Pressure Vessels * **Governing Standard:** **ASTM A20/A20M** - Standard Specification for General Requirements for Steel Plates for Pressure Vessels * **International Equivalents:** * **EN 10028-2:** P355GH (European equivalent with comparable strength) * **JIS G3115:** SB410 (Japanese pressure vessel steel) * **GB 713:** Q345R (Chinese pressure vessel steel equivalent) **3. Chemical Composition (Weight %)** The chemical composition is optimized to achieve the highest strength within the A414 grade series: | Element | Composition (%) | | :---------------- | :---------------------------------- | | Carbon (C), max | 0.30 | | Manganese (Mn), max | 1.20 | | Phosphorus (P), max | 0.025 | | Sulfur (S), max | 0.025 | | Silicon (Si) | 0.15 - 0.40 | | **Special Requirements** | **Killed steel, fine grain practice mandatory** | *Note: The higher manganese content and controlled carbon level provide the enhanced strength characteristics while killed steel practice ensures consistent properties.* **4. Mechanical & Physical Properties** **Mechanical Properties (at room temperature):** | Property | Value | | :--- | :--- | | Tensile Strength | 550 - 620 MPa (80 - 90 ksi) | | Yield Strength (min) | 290 MPa (42 ksi) | | Elongation in 2 in. (50 mm), (min) | 19% | **Physical Properties:** * **Density:** 7.85 g/cm³ (0.284 lb/in³) * **Modulus of Elasticity:** 200 GPa (29 × 10⁶ psi) * **Thermal Conductivity:** ~45.0 W/m·K (at 100°C) * **Coefficient of Thermal Expansion:** ~11.8 × 10⁻⁶/K (20-100°C) * **Poisson's Ratio:** 0.29 **5. Product Applications** ASTM A414 Grade G is designed for demanding pressure vessel applications requiring the highest strength in the A414 series: * **High-Pressure Vessels:** Industrial pressure containers for severe service * **Process Equipment:** Chemical and petrochemical reactors * **Power Generation:** Pressure components in power plant systems * **Compressed Gas Storage:** High-pressure gas storage vessels * **Industrial Boilers:** High-pressure boiler components * **Specialized Containment:** Applications requiring maximum strength in carbon steel **6. Key Characteristics & Advantages** * **Maximum Strength:** Highest mechanical properties in the A414 grade series * **Cost-Effective High Strength:** Provides superior strength without alloy steel costs * **Good Toughness:** Adequate fracture resistance for pressure vessel service * **Consistent Properties:** Killed steel practice ensures uniform mechanical behavior * **Proven Reliability:** Established performance record in demanding applications **7. Fabrication Considerations** * Supplied in normalized or stress-relieved condition * Mandatory pre-heating required for all welding operations * Post-weld heat treatment essential * Controlled forming and bending operations recommended * Special attention to welding procedures and parameters required * Non-destructive testing often specified for critical applications ASTM A414 Grade G represents the premium carbon steel option within the A414 specification, providing maximum strength characteristics for the most demanding pressure vessel applications while maintaining the economic advantages of carbon steel construction. -:- For detailed product information, please contact sales. -: ASTM A414 Grade G Pressure Vessel Steel, Composition Spec Specification Dimensions Size： Diameter 20-1000 mm Length <4386 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 A414 Grade G Pressure Vessel Steel, Composition Spec Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A414 Grade G Pressure Vessel Steel, Composition Spec -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A414 Grade G Pressure Vessel Steel, Composition Spec -:- For detailed product information, please contact sales. -:

Packing of ASTM A414 Grade G Pressure Vessel Steel, Composition Spec -:- 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 857 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