Q: What is the typical composition of SPCC?
A (wt%): C≤0.12, Mn≤0.50, P≤0.035, S≤0.025, Alt≥0.020.
Q: What are the effects of high and low carbon content?
A: Low C → good plasticity, easy stamping, good weldability; High C → increased strength and hardness, brittleness.
Q: Is SPCC a low-carbon steel?
A: Yes, C≤0.12%, typically 0.05–0.10%.
Q: What is the role of aluminum in SPCC?
A: Deoxidation, grain refinement, improved stamping toughness, and prevention of aging embrittlement.
Q: What is the yield strength of SPCC?
A: 140–280 MPa (typically about 210 MPa).