ASTM A131 Steel Capillary, grade A

ASTM A131 Steel Capillary, grade A Product Information -:- For detailed product information, please contact sales. -: ASTM A131 Steel Capillary, grade A Synonyms -:- For detailed product information, please contact sales. -:

ASTM A131 Steel, grade A Product Information -:- For detailed product information, please contact sales. -: ### **Technical Data Sheet: ASTM A131 / A131M Steel, Grade A** **Product Overview** ASTM A131 / A131M is a standard specification for structural steel used in ship construction. Grade A is a general-purpose mild carbon steel grade designed for various marine structural applications. This steel exhibits good weldability, formability, and toughness at ambient temperatures, making it suitable for ship hulls and marine structures where moderate strength is required. --- #### **1. International Standards & Designations** | Standard Organization | Designation | | :--- | :--- | | **ASTM International** | **A131 / A131M Grade A** | | **UNS (Unified Numbering System)** | **K02502** | | **ABS (American Bureau of Shipping)** | **Grade A** | | **European Norm (EN)** | **EURONORM 177** (Equivalent) | | **Japanese (JIS)** | **KA Class** | --- #### **2. Chemical Composition (Weight %)** | Element | Composition (%) | | :--- | :--- | | **Carbon (C)** | 0.21 max | | **Manganese (Mn)** | 2.5 x C (min), 0.80-1.20 (typical) | | **Phosphorus (P)** | 0.035 max | | **Sulfur (S)** | 0.035 max | | **Silicon (Si)** | 0.10-0.35 | | **Copper (Cu)** | 0.35 min (when specified) | | **Iron (Fe)** | Balance | **Key Composition Features:** - **Low Carbon Content**: Ensures good weldability and formability - **Manganese-Carbon Ratio**: Provides adequate strength and toughness - **Controlled Impurities**: Low phosphorus and sulfur for improved ductility --- #### **3. Typical Physical & Mechanical Properties** **Physical Properties:** - **Density**: 7.85 g/cm³ (0.284 lb/in³) - **Melting Point**: ~1425-1540°C (2600-2800°F) - **Modulus of Elasticity**: 200 GPa (29,000 ksi) - **Poisson's Ratio**: 0.29 - **Coefficient of Thermal Expansion**: 11.5 × 10⁻⁶ /K (20-100°C) - **Thermal Conductivity**: 51.9 W/m·K **Mechanical Properties (Per ASTM A131):** - **Tensile Strength**: 400-490 MPa (58-71 ksi) - **Yield Strength**: 235 MPa (34 ksi) min - **Elongation**: 22% min in 200 mm, 25% min in 50 mm - **Charpy V-Notch Impact**: 20 J (15 ft-lb) min at 0°C (32°F) --- #### **4. Product Applications** **Shipbuilding Industry:** - Ship hull structures - Deck plating - Bulkheads - Framing components **Marine Structures:** - Offshore platforms - Dock gates - Floating structures - Harbor equipment **General Construction:** - Marine-grade structural components - Coastal building structures - Bridge components in marine environments --- #### **5. Manufacturing & Fabrication** **Heat Treatment:** - Typically supplied in as-rolled condition - Normalizing available when specified - Stress relieving when required **Welding Characteristics:** - Excellent weldability using all standard processes - No pre-heat required for most thicknesses - Post-weld heat treatment optional **Forming & Machining:** - Good cold forming properties - Excellent shearability and punchability - Suitable for bending and rolling operations --- #### **6. Quality Assurance & Testing** ASTM A131 mandates: - Chemical analysis for each heat - Tensile testing - Charpy V-notch impact testing - Non-destructive testing when specified - Dimensional verification --- #### **7. Corrosion Performance** - **Atmospheric Corrosion**: Good resistance in marine environments - **Corrosion Rate**: Approximately 0.1-0.2 mm/year in seawater - **Protection**: Typically used with coating systems or cathodic protection --- **Technical Notes:** - Grade A is the most commonly used grade for general shipbuilding - Suitable for service temperatures down to 0°C (32°F) - Requires proper corrosion protection in marine environments - Compatible with most marine coating systems *This information is for reference purposes. For complete requirements, consult the latest ASTM A131/A131M specification and applicable regulatory body rules (ABS, DNV, LR, etc.).* -:- For detailed product information, please contact sales. -: ASTM A131 Steel, grade A Specification Dimensions Size： Diameter 20-1000 mm Length <4220 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 A131 Steel, grade A Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A131 Steel Capillary, grade A -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A131 Steel Capillary, grade A -:- For detailed product information, please contact sales. -:

Packing of ASTM A131 Steel Capillary, grade A -:- 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 Capillary 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 691 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