DC01 Tensile Strength
DC01 is a cold-rolled low-carbon steel (non-galvanized) specified in the European standard EN 10130. Its tensile strength (Rm) is a key indicator of a material's resistance to tensile fracture. The following is a detailed description:
1. Standard Tensile Strength Range (EN 10130)
Grade Tensile Strength (Rm) Yield Strength (Rp0.2) Elongation (A80mm)
DC01 270-410 MPa ≥140 MPa ≥28% (thickness ≤ 2mm)
Note:
Lower tensile strength limit: 270 MPa (to ensure basic material strength).
Upper tensile strength limit: 410 MPa (exceeding this value may affect stamping formability).
Actual delivery values are typically between 300 and 380 MPa (depending on the annealing condition).
2. Factors that affect tensile strength
(1) Material composition (EN 10130 requirements)
Elements C (carbon) Mn (manganese) P (phosphorus) S (sulfur)
Content ≤0.12% ≤0.60% ≤0.045% ≤0.045%
Carbon content ↑ → tensile strength ↑, but plasticity ↓ (DC01 low carbon design ensures good formability).
(2) Cold rolling and annealing process
Cold rolling hardening: After cold rolling, if not annealed, the tensile strength may be as high as 400~500 MPa, but the plasticity is poor.
Annealing softening: DC01 is usually supplied in the annealed state (soft state), and the tensile strength returns to the standard range (270~410 MPa).
(3) Why does thickness affect
Thinner plates (such as 0.5mm) may have slightly higher tensile strength than thicker plates (2.0mm) (work hardening effect).
3. What is the relationship between tensile strength and processability?
Performance Impact
Stamping: Lower tensile strength (e.g., 300 MPa) makes deep drawing and stretching easier.
Bending/Folding: Excessively high tensile strength (>380 MPa) may cause cracking.
Welding: Mild steel has good weldability, and fluctuations in tensile strength have little impact on welding.
Typical Applications:
Low-strength requirements: Electrical housings, simple stampings (preferred tensile strength 300-350 MPa).
Medium-strength requirements: Automotive non-structural parts, building supports (350-380 MPa optional).
4. Comparison with Other Grades
Grade Tensile Strength (MPa) Applications
DC01 270-410 General Stamping
DC04 260-380 Deep Drawings (Higher Plasticity)
DC06 260-350 Ultra-Deep Drawings (Complex Forming)
SPCC (China) 270-410 Similar to DC01
5. Test Standard (EN ISO 6892-1)
Specimen Size: 20mm Width, 80mm Gauge Length (A80).
Test Speed: Typically strain rate controlled (e.g., 0.0067/s).
Summary
DC01 tensile strength ranges from 270-410 MPa, typically 300-380 MPa (annealed).
Low strength + high plasticity: Suitable for stamping and bending, but not for high-strength structural parts.
If higher strength is required, consider DC03/DC04 (sacrificing plasticity in exchange for formability) or high-strength steel (such as HX340LAD).