1. Material Standards & Grades

Primary Standards:

• ASTM A1008 - Cold-Rolled Carbon Steel Sheet

• JIS G3141 - Cold-Rolled Carbon Steel Sheets and Strips

• GB/T 11253 - Carbon Structural Steel Cold-Rolled Sheets and Strips

• EN 10130 - Cold-Rolled Low Carbon Steel Flat Products

Common Commercial Grades:

2. Chemical Composition (% by weight)

3. Mechanical Properties

4. Physical Properties

5. Product Specifications

6. Manufacturing Process

Production Steps:

• Hot-rolled coil pickling

• Cold rolling (40-90% reduction)

• Continuous annealing (batch annealing available)

• Skin pass/temper rolling

• Leveling and cutting

• Final inspection and packaging

Key Process Parameters:

• Rolling reduction: 40-90%

• Annealing temperature: 680-720°C

• Skin pass reduction: 0.5-2.0%

• Surface roughness: Ra 0.1-1.0μm

7. Surface Finish Options

8. Testing & Inspection

Standard Tests:

• Tensile test (ASTM E8/ISO 6892-1)

• Bend test (ASTM E290/ISO 7438)

• Hardness test (ASTM E18/ISO 6508)

• Chemical analysis

• Surface roughness measurement

• Dimensional inspection

• Surface quality inspection

Optional Tests:

• Erichsen cupping test (ISO 20482)

• Rockwell hardness test

• Microstructure examination

• Non-destructive testing

• Salt spray test (ASTM B117)

9. Applications

Primary Applications:

• Automotive Industry: Body panels, structural components, brackets

• Home Appliances: Refrigerator panels, washing machine drums, oven cavities

• Electronics: Computer cases, office equipment chassis, enclosures

• Construction: Decorative panels, ceiling grids, furniture

• General Manufacturing: Metal furniture, containers, displays

Secondary Processing Capabilities:

• Stamping and deep drawing

• Welding (spot welding, laser welding)

• Painting and coating

• Electroplating

• Powder coating