ASTM A135 Steel Sheet,Plate, grade A

ASTM A135 Steel Sheet/Plate, grade A Product Information -:- For detailed product information, please contact sales. -: ASTM A135 Steel Sheet/Plate, grade A Synonyms -:- For detailed product information, please contact sales. -:

ASTM A135 Steel, grade A Product Information -:- For detailed product information, please contact sales. -: ### **Technical Data Sheet: ASTM A135 / A135M Steel, Grade A** --- #### **1. Product Overview** ASTM A135 Grade A is a standard specification for **electric-resistance-welded (ERW) carbon steel tubes** intended for pressure and structural applications. This grade represents a general-purpose carbon steel tube with moderate strength and good weldability, making it suitable for various industrial applications including pressure piping, structural supports, and mechanical components. The tubes are manufactured by the ERW process and can be supplied either as-welded or cold-drawn. --- #### **2. International Standards & Equivalents** | Standard Organization | Designation | |-----------------------|-------------| | **ASTM International** | **A135 / A135M Grade A** | | **API (American Petroleum Institute)** | **API 5L Grade A** (Similar) | | **ISO International Standard** | **ISO 559** (Equivalent) | | **European Norm (EN)** | **EN 10255** | | **Japanese (JIS)** | **G 3444** | | **Chinese GB** | **GB/T 3091** | --- #### **3. Chemical Composition (Weight %)** | Element | Composition (%) | |---------|-----------------| | **Carbon (C)** | 0.25 max | | **Manganese (Mn)** | 0.27-0.63 | | **Phosphorus (P)** | 0.035 max | | **Sulfur (S)** | 0.035 max | | **Copper (Cu)** | 0.20 min (when required) | | **Iron (Fe)** | Balance | **Key Composition Features:** - **Moderate Carbon Content**: Provides good balance of strength and formability - **Controlled Manganese Range**: Ensures adequate strength and weldability - **Low Sulfur and Phosphorus**: Minimizes segregation and improves ductility - **Optional Copper Addition**: Enhances atmospheric corrosion resistance --- #### **4. Mechanical Properties** **Tensile Properties:** - **Tensile Strength**: 331 MPa (48 ksi) min - **Yield Strength**: 207 MPa (30 ksi) min - **Elongation in 50 mm (2 in)**: - 35% min (as-welded) - 25% min (cold-drawn) **Hardness Properties:** - **Maximum Hardness**: 72 HRB typical - **Brinell Hardness**: 137 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** | 52.0 W/m·K at 20°C | | **Coefficient of Thermal Expansion** | 11.7 × 10⁻⁶ /K (20-100°C) | | **Specific Heat Capacity** | 470 J/kg·K | --- #### **6. Product Applications** **Pressure Applications:** - Low-pressure steam and water lines - Air and gas piping systems - Hydraulic fluid lines - Compressed air systems - Process piping for non-corrosive media **Structural Applications:** - Mechanical and structural tubing - Support frames and structures - Handrails and guard rails - Scaffolding components - General purpose structural members **Industrial Applications:** - Conduit for electrical wiring - Heat exchanger tubing - Machinery and equipment components - Agricultural equipment tubing - Automotive structural components --- #### **7. Manufacturing & Fabrication** **Manufacturing Process:** - **Electric Resistance Welding (ERW)** - Continuous welding process - Available in as-welded or cold-drawn conditions - Sizes range from 1/8" to 26" nominal diameter **Welding Characteristics:** - Excellent weldability using all standard processes - SMAW, GMAW, GTAW suitable - No pre-heat required for most applications - Post-weld heat treatment generally not required **Forming & Machining:** - Good cold forming properties - Excellent bendability and flaring characteristics - Good machinability with proper tooling - Suitable for threading and grooving operations --- #### **8. Quality Assurance & Testing** **Mandatory Tests (per ASTM A135):** - Transverse tension test - Flattening test - Reverse flattening test (for sizes ≤ 4½" NPS) - Hydrostatic test or non-destructive electric test **Additional Tests (when specified):** - Bend test - Chemical analysis - Charpy impact test - Hardness test --- #### **9. Corrosion Performance** - **Atmospheric Corrosion**: Good resistance in dry environments - **Water Corrosion**: Moderate resistance, may require protective coatings - **Chemical Resistance**: Suitable for non-corrosive media only - **Protection Methods**: Galvanizing, painting, or coating recommended for corrosive environments --- #### **10. Available Product Forms** **Size Range:** - **Nominal Diameter**: 1/8" to 26" NPS - **Wall Thickness**: Schedule 10 to Schedule 160 - **Lengths**: Random (16-22 ft) or cut to length **Surface Conditions:** - Black (as-welded) - Galvanized - Painted or coated --- #### **11. Technical Specifications** **Dimensional Standards:** - **Outside Diameter Tolerance**: ±0.79 mm (±0.031 in) - **Wall Thickness Tolerance**: ±12.5% - **Length Tolerance**: +3 mm (+1/8 in), -0 mm **Pressure Ratings:** - **Maximum Working Pressure**: Varies with diameter and wall thickness - **Design Factor**: Typically 0.72 for pressure applications - **Temperature Range**: -29°C to 427°C (-20°F to 800°F) --- **Technical Notes:** - Grade A provides the most economical option for general purpose applications - Suitable for service temperatures from -29°C to 427°C (-20°F to 800°F) - ERW process ensures consistent wall thickness and dimensional accuracy - Must comply with applicable codes (ASME B31.1, B31.3, etc.) for pressure applications - Regular inspection recommended for critical applications *This information is for reference purposes. For complete requirements and current specifications, consult the latest ASTM A135/A135M standard and applicable pressure vessel and piping codes. Always verify material properties with certified mill test reports before installation.* -:- For detailed product information, please contact sales. -: ASTM A135 Steel, grade A Specification Dimensions Size： Diameter 20-1000 mm Length <4228 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 A135 Steel, grade A Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A135 Steel Sheet,Plate, grade A -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A135 Steel Sheet,Plate, grade A -:- For detailed product information, please contact sales. -:

Packing of ASTM A135 Steel Sheet/Plate, 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 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 699 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