ASTM A227M Steel Sheet,Plate, Class I

ASTM A227M Steel Sheet/Plate Wire, Class I Product Information -:- For detailed product information, please contact sales. -: ASTM A227M Steel Sheet/Plate Wire, Class I Synonyms -:- For detailed product information, please contact sales. -:

ASTM A227M Steel Wire, Class I Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: ASTM A227M Steel Wire, Class I** **ASTM A227M Class I** is a metric specification for cold-drawn carbon steel wire designed for mechanical spring applications. This class represents the standard grade within the A227M specification, providing a balanced combination of strength and ductility for general-purpose spring manufacturing in metric dimensions. --- #### **1. International Standards & Classification** **Primary Standard:** **ASTM A227M** - "Standard Specification for Steel Wire, Cold-Drawn for Mechanical Springs [Metric]" **Classification:** - **Class I** - Standard hard-drawn steel spring wire (metric) - **Class II** - Special quality with closer dimensional tolerances **International Equivalents:** - **EN 10270-1**: SH (Spring Hardened) grade - **JIS G 3521**: SWP-A - **GB/T 4357**: Grade D - **ISO 8458-2**: Class A --- #### **2. Chemical Composition** The chemical composition requirements for ASTM A227M Class I: | Element | Composition (Maximum %) | |---|---| | Carbon (C) | 0.85-0.95 | | Manganese (Mn) | 0.30-0.60 | | Phosphorus (P) | 0.025 | | Sulfur (S) | 0.025 | | Silicon (Si) | 0.10-0.30 | **Key Composition Features:** - **High Carbon Content**: 0.85-0.95% for spring properties - **Manganese Control**: 0.30-0.60% for strength enhancement - **Low Impurities**: Phosphorus and sulfur limited to 0.025% - **Silicon Content**: 0.10-0.30% for solid solution strengthening --- #### **3. Physical & Mechanical Properties** **Mechanical Properties (Metric Specifications):** | Wire Diameter (mm) | Tensile Strength (MPa) | Torsion Tests (min. twists) | |---|---|---| | 0.50-1.00 | 1850-2150 | 20-25 | | 1.01-2.00 | 1750-2050 | 18-22 | | 2.01-3.00 | 1650-1950 | 16-20 | | 3.01-4.00 | 1550-1850 | 14-18 | | 4.01-5.00 | 1450-1750 | 12-16 | **Physical Properties:** - **Density**: 7.85 g/cm³ - **Modulus of Elasticity**: 200 GPa - **Shear Modulus**: 77 GPa - **Thermal Conductivity**: 49.5 W/m·K - **Coefficient of Thermal Expansion**: 11.5 × 10⁻⁶/°C --- #### **4. Product Applications** **Spring Manufacturing:** - Metric compression springs - Extension springs - Torsion springs - Volute springs **Industrial Applications:** - Mechanical seals and components - Valve springs - Electrical contacts - Precision mechanisms **Automotive Industry:** - Suspension components - Brake system springs - Transmission springs - Engine components **Consumer Products:** - Furniture mechanisms - Appliance components - Office equipment - Hardware applications --- #### **5. Fabrication Characteristics** **Forming Performance:** - **Good Cold Formability**: Suitable for metric spring coiling - **Consistent Springback**: Predictable behavior in forming - **Surface Quality**: Meets standard requirements - **Winding Performance**: Good for automatic metric machinery **Heat Treatment:** - **Stress Relieving**: Recommended at 250-300°C after forming - **Maximum Service Temperature**: 120°C - **No Quenching Required**: Properties from cold working **Surface Finish:** - **Standard Finish**: Bright commercial finish - **Surface Integrity**: Minimal defects required - **Coating Compatibility**: Suitable for various finishes **Quality Assurance:** - **Tensile Testing**: Required per specification - **Torsion Testing**: Mandatory quality control - **Dimensional Verification**: Metric tolerance checks - **Surface Inspection**: Visual examination --- ### **Technical Summary** ASTM A227M Class I provides a metric-standard cold-drawn carbon steel wire solution for mechanical spring applications requiring reliable performance and cost-effectiveness. The high carbon content (0.85-0.95%) delivers the necessary strength and spring properties through cold drawing, eliminating the need for additional heat treatment in most applications. This metric class offers manufacturers using ISO-standard equipment a consistent material solution with predictable mechanical properties and good formability. The balanced chemical composition ensures reliable performance while maintaining economic viability for volume production. The wire's consistent diameter tolerances in metric dimensions and reliable mechanical properties make it particularly suitable for manufacturers operating in international markets or using metric-based manufacturing systems. While not designed for high-stress or elevated temperature applications, ASTM A227M Class I delivers dependable performance for a wide range of general spring applications across multiple industries. The specification's alignment with international metric standards facilitates global supply chain integration and ensures compatibility with metric-based spring design and manufacturing processes, making it a practical choice for manufacturers serving diverse international markets. -:- For detailed product information, please contact sales. -: ASTM A227M Steel Wire, Class I Specification Dimensions Size： Diameter 20-1000 mm Length <4345 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 A227M Steel Wire, Class I Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A227M Steel Sheet,Plate Wire, Class I -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A227M Steel Sheet,Plate Wire, Class I -:- For detailed product information, please contact sales. -:

Packing of ASTM A227M Steel Sheet/Plate Wire, Class I -:- 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 816 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