ASTM A424 Steel, type I, commercial quality

ASTM A424 Steel, type I, commercial quality Product Information -:- For detailed product information, please contact sales. -: ASTM A424 Steel, type I, commercial quality Synonyms -:- For detailed product information, please contact sales. -:

ASTM A424 Steel, type I, commercial quality Product Information -:- For detailed product information, please contact sales. -: ### **Technical Data Sheet: ASTM A424 Steel, Type I (Commercial Quality)** --- #### **1. Product Overview** ASTM A424 Type I, Commercial Quality is a **terne-coated (lead-tin alloy) cold-rolled steel sheet** designed for applications requiring good corrosion resistance, excellent solderability, and formability at a commercial quality level. This specification covers steel sheet in coils and cut lengths, with a terne alloy coating (lead-tin) applied by the hot-dip process. Commercial quality indicates it is suitable for parts where bending, moderate drawing, and forming are required, but surface imperfections are acceptable for the intended application. --- #### **2. International Standards & Equivalents** | Standard Organization | Designation | |-----------------------|-------------| | **ASTM International** | **A424 Type I (Commercial Quality)** | | **UNS Number** | **K02602** | | **ISO International Standard** | **ISO 4999 (Commercial Quality)** | | **European Norm (EN)** | **EN 10205 (DQ)** | | **Japanese (JIS)** | **G3313 (Commercial Grade)** | | **Chinese GB** | **GB/T 11253 (Commercial Quality)** | --- #### **3. Chemical Composition (Weight %)** **Base Steel Composition (Commercial Quality):** | Element | Composition (%) | |---------|-----------------| | **Carbon (C)** | 0.15 max | | **Manganese (Mn)** | 0.60 max | | **Phosphorus (P)** | 0.035 max | | **Sulfur (S)** | 0.035 max | | **Silicon (Si)** | 0.10 max (optional) | | **Copper (Cu)** | 0.20 min (optional, for corrosion) | | **Iron (Fe)** | Balance | **Terne Coating Composition:** | Element | Composition (%) | |---------|-----------------| | **Lead (Pb)** | 75-90% | | **Tin (Sn)** | 10-25% | | **Other Elements** | 0.50 max | **Key Composition Features:** - **Commercial Quality Base Steel**: Balanced for formability and cost - **Standard Lead-Tin Coating**: Provides corrosion protection and solderability - **Flexible Chemistry**: Allows for mill optimization of properties - **Coating Weight**: Typically 30-110 g/m² total both sides (commercial range) --- #### **4. Mechanical Properties** **Base Metal Properties (Commercial Quality):** - **Tensile Strength**: 290-450 MPa (42,000-65,000 psi) - **Yield Strength**: 170 MPa (25,000 psi) min - **Elongation in 50 mm (2 in)**: 20% min - **Hardness**: 50-75 HRB (typical commercial range) **Coating & Fabrication Properties:** - **Coating Adhesion**: Good - suitable for commercial forming operations - **Solderability**: Excellent with standard solder alloys - **Formability**: Suitable for bending and moderate drawing --- #### **5. Physical Properties** | Property | Value | |----------|-------| | **Density (Base Steel)** | 7.85 g/cm³ | | **Density (Terne Coating)** | 9.50-10.50 g/cm³ | | **Melting Point (Coating)** | 183-327°C (361-621°F) | | **Thermal Conductivity** | 48.5 W/m·K | | **Coefficient of Thermal Expansion** | 12.0 × 10⁻⁶ /K | | **Electrical Conductivity** | 12-15% IACS | | **Magnetic Properties** | Ferromagnetic | --- #### **6. Product Applications** **Commercial & Industrial Applications:** - **Automotive**: Non-critical fuel line components, brackets, shields - **HVAC**: Ductwork fittings, ventilation components - **Containers**: General-purpose oil cans, lubricant containers - **Hardware**: Commercial-grade brackets, mounting plates - **Electrical**: Junction boxes, non-critical enclosures **General Manufacturing:** - Stampings requiring solderability - Formed parts with moderate corrosion requirements - Assemblies needing soldered joints - Cost-effective corrosion-resistant applications --- #### **7. Manufacturing & Fabrication** **Forming Characteristics (Commercial Quality):** - **Good Formability**: Suitable for bending and moderate forming - **Coating Adhesion**: Maintains integrity in commercial forming operations - **Minimum Bend Radius**: 1.5 × thickness (commercial recommendation) - **Tooling**: Standard tooling suitable **Joining Methods:** - **Excellent Solderability**: With common tin-lead and lead-free solders - **Soldering Temperature**: 200-300°C (392-572°F) - **Resistance Welding**: Suitable with proper parameters - **Mechanical Fastening**: Good performance **Surface Considerations:** - **Surface Quality**: Commercial finish - minor imperfections acceptable - **Painting**: Good with proper surface preparation - **Storage**: Dry conditions recommended --- #### **8. Quality Assurance & Testing** **Commercial Quality Tests:** - Coating weight verification - Bend testing for coating adhesion - Solderability testing - Visual surface inspection **Standard Requirements:** - Chemical analysis of base metal - Mechanical properties verification - Coating composition check - Dimensional accuracy --- #### **9. Corrosion Performance** - **Atmospheric Corrosion**: Good resistance for commercial applications - **Fuel & Oil Resistance**: Suitable for petroleum product contact - **Water Resistance**: Adequate with proper design for drainage - **Economic Protection**: Cost-effective corrosion resistance --- #### **10. Available Product Forms** **Commercial Dimensions:** - **Thickness Range**: 0.45 mm to 2.00 mm (0.018" to 0.079") - **Width Range**: 600 mm to 1500 mm (24" to 60") - **Length Range**: Coils or cut lengths as required **Surface Conditions:** - Standard terne coating finish - Oiled for storage and handling - Commercial surface quality --- #### **11. Technical Specifications** **Commercial Coating Requirements:** - **Coating Weight**: 30-110 g/m² total both sides - **Coating Uniformity**: Commercially acceptable coverage - **Surface Quality**: Suitable for intended application **Dimensional Tolerances (Commercial):** - **Thickness Tolerance**: ±0.08 mm - **Width Tolerance**: +5 mm, -0 mm - **Length Tolerance**: +10 mm, -0 mm - **Flatness**: Commercially straight --- **Technical Notes:** - Commercial quality offers cost-effective solution for non-critical applications - Suitable for parts where minor surface imperfections are acceptable - Provides excellent solderability at commercial quality level - Proper handling recommended to maintain coating integrity - Compliance with local regulations regarding lead content may be required *This information is for reference purposes. For complete commercial quality requirements, consult the latest ASTM A424 standard and applicable industry specifications. Material testing recommended for critical applications.* -:- For detailed product information, please contact sales. -: ASTM A424 Steel, type I, commercial quality Specification Dimensions Size： Diameter 20-1000 mm Length <4245 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 A424 Steel, type I, commercial quality Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A424 Steel, type I, commercial quality -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A424 Steel, type I, commercial quality -:- For detailed product information, please contact sales. -:

Packing of ASTM A424 Steel, type I, commercial quality -:- 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 716 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