Q: Why isn't SPCC the preferred choice for deep-drawing parts?
A: SPCD/SPCE is recommended for deep drawing due to its superior elongation and plasticity. SPCC is only suitable for shallow drawing and simple stretching.
Q: What are the common surface treatments for SPCC?
A: Zinc plating (SECC), tin plating, phosphating, passivation, electrophoresis, and powder coating to improve corrosion resistance and appearance.
Q: What is the relationship between SPCC and DC01?
A: SPCC (JIS) and DC01 (EN) have similar compositions and mechanical properties and can be substituted for each other. Confirmation should be made according to customer standards.
Q: What are the causes and control measures for surface scratches on SPCC?
A: Causes include roll wear, transport collisions, and die scratches. Countermeasures include regular roll replacement, adding protective films, and optimizing packaging and handling.
Q: Why is SPCC prone to rust?
A: Cold-rolled steel without a protective layer will react with Fe to form rust; humid, high-salt, and highly polluted environments will accelerate corrosion.