Q: What are the chemical composition (mass fraction) requirements for DC06 coils?
A: C≤0.005%, Mn≤0.20%, Si≤0.030%, P≤0.020%, S≥0.015%, ultra-low carbon content ensures high ductility.
Q: What is the yield strength range of DC06 coils?
A: 110-170MPa, low yield point with small fluctuations, resulting in minimal springback during forming.
Q: What are the tensile strength and elongation after fracture of DC06 coils?
A: Tensile strength 260-330MPa, elongation after fracture ≥38%, some batches can reach over 41%, less prone to cracking during deep drawing.
Q: What are the r-value (plastic strain ratio) and n-value (work hardening index) requirements for DC06 coils?
A: r90≥2.1, n90≥0.22, ensuring isotropic and uniform deformation capacity, improving deep drawing limits.
Q: What is the hardness range of DC06 coils?
A: ≤57HRB, soft texture, easy to stamp and bend.