Q: What are the main application areas of SPCC?
A: Automotive – interior parts, brackets, non-exposed structural parts; Home appliances – refrigerator/washing machine housings, bases; Electronics – chassis, brackets; Hardware – stamped parts, fasteners; Construction – decorative parts, ventilation ducts.
Q: What are the differences between SPCC, SGCC, and SECC, and how should one choose between them?
A: SPCC = cold-rolled substrate, low cost, no rust prevention; SGCC = hot-dip galvanized, good rust prevention, medium cost; SECC = electro-galvanized, high precision, high cost. For indoor non-exposed applications, choose SPCC; for outdoor/humid applications, choose SGCC/SECC.
Q: Can SPCC be used for deep-drawn parts?
A: SPCC can be used for shallow drawing; SPCD for medium-deep drawing; SPCE or SPCE-N (interstitial steel) for deep/ultra-deep drawing.
Q: Can SPCC be used for welded structural parts?
A: Suitable for low-carbon steel welded structural components, such as frames and supports; heavy-duty structures require upgrading to Q355 or higher strength steel.
Q: What are the requirements for SPCC as a hot-dip galvanized substrate?
A: Clean surface free of oxide scale and oil; high dimensional accuracy; stable composition (C, Si, Mn, P, S controlled within target ranges).