DC05 Tensile Strength
DC05 is a high-quality cold-rolled low-carbon steel sheet specified in the European standard (EN 10130). It is primarily used for deep drawing and complex forming processes (such as automotive panels and appliance housings). Its tensile strength is a key indicator of a material's mechanical properties. The following are detailed parameters and influencing factors:
1. DC05 Tensile Strength Standard Values
According to the EN 10130 standard, the tensile strength range of DC05 is as follows:
Performance Parameter Typical Value Range Unit
Tensile Strength (Rm) 250 - 360 MPa
Yield Strength (Rp0.2) 120 - 210 MPa
Elongation at Break (A80) ≥ 38% -
Note:
Tensile strength values may fluctuate slightly due to material thickness and production process (annealing temperature, cold rolling ratio).
Lower strength (e.g., DC06) or higher strength (e.g., DC04) can be achieved by adjusting the composition and process.
2. Factors Affecting Tensile Strength
DC05's tensile strength is primarily controlled by the following composition and processing:
Carbon (C) Content: ≤ 0.06%. Low carbon ensures low strength and high ductility.
Manganese (Mn) Content: ≤ 0.40%. Slight solid solution strengthening.
Annealing Process: Full annealing eliminates cold rolling hardening, reducing strength and increasing ductility.
Cold Rolling Deformation: The lower the reduction, the lower the strength (more suitable for deep drawing).
3. Comparison with Other Cold-Rolled Grades
Grade (EN) Tensile Strength (MPa) Yield Strength (MPa) Elongation (%) Applicable Applications
DC01 270 - 410 140 - 240 ≥ 28 Simple Stamping
DC04 260 - 380 130 - 220 ≥ 34 Medium-deep Stamping
DC05 250 - 360 120 - 210 ≥ 38 Deep Drawing, Complex Forming
DC06 240 - 350 110 - 200 ≥ 42 Ultra-deep Drawing (High Difficulty)
Rule: The higher the grade number (DC01 → DC06), the lower the strength, the higher the plasticity, and the better the stamping performance.
4. Strength Considerations in Practical Applications
Advantages of Low Tensile Strength: Reduces the risk of stamping cracking and is suitable for manufacturing complex shapes such as automotive fuel tanks and door panels.
Limitations: Low strength makes it unsuitable for load-bearing structural components (high-strength steels such as HX340 and DP600 should be used instead).
5. What are the testing standards and certifications?
Test method: ISO 6892-1 (room temperature tensile test).
Certification standards: EN 10130, DIN 1623. Some manufacturers may provide company standards (such as Baosteel and ArcelorMittal).
Summary
DC05's tensile strength of 250-360 MPa reflects its design goal of "low strength, high ductility," making it suitable for applications with stringent formability requirements.
