ASTM A139 Steel Capillary, grade C

ASTM A139 Steel Capillary, grade C Product Information -:- For detailed product information, please contact sales. -: ASTM A139 Steel Capillary, grade C Synonyms -:- For detailed product information, please contact sales. -:

ASTM A139 Steel, grade C Product Information -:- For detailed product information, please contact sales. -: ### **Technical Data Sheet: ASTM A139 / A139M Steel, Grade C** --- #### **1. Product Overview** ASTM A139 Grade C is a specification for **electric-fusion-welded (EFW) steel pipe** designed for high-pressure applications requiring superior mechanical properties. As the highest strength grade in the A139 standard, Grade C provides enhanced performance for demanding pipeline applications, including high-pressure water transmission, oil and gas pipelines, and other critical infrastructure projects where maximum strength and reliability are essential. --- #### **2. International Standards & Equivalents** | Standard Organization | Designation | |-----------------------|-------------| | **ASTM International** | **A139 / A139M Grade C** | | **API (American Petroleum Institute)** | **API 5L Grade X42** (Similar) | | **ISO International Standard** | **ISO 3183** | | **European Norm (EN)** | **EN 10208-2** | | **Canadian Standards Association** | **CSA Z245.1** | | **German (DIN)** | **DIN 17100 St52** | --- #### **3. Chemical Composition (Weight %)** | Element | Composition (%) | |---------|-----------------| | **Carbon (C)** | 0.35 max | | **Manganese (Mn)** | 1.20 max | | **Phosphorus (P)** | 0.035 max | | **Sulfur (S)** | 0.035 max | | **Silicon (Si)** | 0.10-0.35 | | **Copper (Cu)** | 0.20 min (when required) | | **Nickel (Ni)** | 0.25 max (when required) | | **Chromium (Cr)** | 0.25 max (when required) | | **Iron (Fe)** | Balance | **Key Composition Features:** - **Higher Carbon Content**: Maximum 0.35% for enhanced strength - **Optimized Manganese**: Up to 1.20% for improved strength and hardenability - **Silicon Content**: 0.10-0.35% for deoxidation and strength - **Optional Alloying**: Copper, nickel, or chromium for specific properties - **Controlled Impurities**: Low phosphorus and sulfur for weld quality --- #### **4. Mechanical Properties** **Tensile Properties:** - **Tensile Strength**: 483 MPa (70,000 psi) min - **Yield Strength**: 276 MPa (40,000 psi) min - **Elongation in 50 mm (2 in)**: - 28% min (longitudinal strip test) - 18% min (transverse strip test) **Hardness Properties:** - **Maximum Hardness**: 85 HRB typical - **Brinell Hardness**: 156 HBW max --- #### **5. Physical Properties** | Property | Value | |----------|-------| | **Density** | 7.85 g/cm³ (0.284 lb/in³) | | **Modulus of Elasticity** | 200 GPa (29,000 ksi) | | **Shear Modulus** | 77 GPa (11,200 ksi) | | **Poisson's Ratio** | 0.29 | | **Thermal Conductivity** | 50.5 W/m·K at 20°C | | **Coefficient of Thermal Expansion** | 11.6 × 10⁻⁶ /K (20-100°C) | | **Specific Heat Capacity** | 465 J/kg·K | | **Electrical Resistivity** | 0.18 μΩ·m | --- #### **6. Product Applications** **High-Pressure Pipeline Systems:** - High-pressure water transmission mains - Oil and gas transmission pipelines - Natural gas high-pressure distribution - High-head hydroelectric penstocks - Industrial high-pressure process systems **Critical Infrastructure Projects:** - Municipal high-pressure water networks - Large-diameter transmission pipelines - Power plant cooling water systems - Mining slurry transport systems - Water treatment plant high-pressure lines **Special Applications:** - Offshore pipeline applications - Mountainous terrain pipelines - River crossing pipelines - High-pressure steam lines - Structural support columns --- #### **7. Manufacturing & Fabrication** **Manufacturing Process:** - **Electric Fusion Welding (EFW)** - Continuous welding with filler metal addition - Sizes from 4 inches (101.6 mm) to 144 inches (3658 mm) diameter - Multiple wall thickness options available **Welding Characteristics:** - Good weldability with proper procedures - Pre-heat recommended for most applications - Suitable for SMAW, GMAW, FCAW processes - Post-weld heat treatment often specified **Forming & Machining:** - Adequate cold forming properties - Field bending requires proper equipment and procedures - Good machinability with appropriate tooling - Suitable for various end preparations --- #### **8. Quality Assurance & Testing** **Mandatory Tests (per ASTM A139):** - Transverse or longitudinal tension test - Flattening test - Bend test - Hydrostatic test - Non-destructive electric test **Additional Tests (when specified):** - Complete chemical analysis - Charpy impact testing - Hardness testing - Visual and dimensional inspection - Weld zone macro-examination --- #### **9. Corrosion Performance** - **Atmospheric Corrosion**: Good resistance with copper addition - **Water Service**: Suitable for various water chemistries - **Soil Corrosion**: Requires comprehensive protection systems - **Chemical Resistance**: Adequate for many industrial environments - **Protection Methods**: Multi-layer coatings, linings, cathodic protection --- #### **10. Available Product Forms** **Size Range:** - **Nominal Diameter**: 4 inches to 144 inches - **Wall Thickness**: Various schedules available - **Lengths**: Single random (16-22 ft) or double random (35-40 ft) **Surface Conditions:** - Bare (as-welded) - Primed and externally coated - Internally lined as specified - Special coatings available --- #### **11. Technical Specifications** **Dimensional Standards:** - **Outside Diameter Tolerance**: ±0.5% of nominal diameter - **Wall Thickness Tolerance**: ±10% - **Length Tolerance**: +300 mm (+12 in), -0 mm - **Straightness Tolerance**: 0.08% of length **Pressure Ratings:** - **Maximum Working Pressure**: Highest in A139 grade series - **Design Factor**: Typically 0.72 for pipeline applications - **Temperature Range**: -29°C to 427°C (-20°F to 800°F) - **Hydrostatic Test Pressure**: Minimum 2.5 times design pressure --- **Technical Notes:** - Grade C provides the highest strength in the A139 standard series - Approximately 45% higher tensile strength than Grade A - Suitable for service temperatures from -29°C to 427°C (-20°F to 800°F) - EFW manufacturing allows for large diameter, high-strength pipe - Must comply with applicable pipeline codes and standards - Regular inspection and maintenance crucial for high-pressure service *This information is for reference purposes. For complete requirements and current specifications, consult the latest ASTM A139/A139M standard and applicable pipeline safety codes. Always verify material properties with certified mill test reports before installation and operation.* -:- For detailed product information, please contact sales. -: ASTM A139 Steel, grade C Specification Dimensions Size： Diameter 20-1000 mm Length <4232 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 A139 Steel, grade C Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A139 Steel Capillary, grade C -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A139 Steel Capillary, grade C -:- For detailed product information, please contact sales. -:

Packing of ASTM A139 Steel Capillary, 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 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 703 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