Q: What is the core difference between SPCC and SPHC?
A: SPCC is cold-rolled, resulting in a smoother surface, higher dimensional accuracy, and better formability. SPHC is hot-rolled, with lower cost but weaker surface finish and accuracy. For the same sheet thickness, SPCC is slightly more expensive.
Q: What is the difference between SPCC and SPCD/SPCE?
A: All three belong to the JIS cold-rolled series: SPCC = general use, SPCD = stamping (deep drawing), SPCE = deep drawing (ultra-deep drawing), with formability increasing in that order and price increasing accordingly.
Q: What is the common thickness range for SPCC?
A: Standard 0.18–3.2mm, most commonly 0.5/0.8/1.0/1.2/1.6/2.0/2.3/3.2mm. Custom thicknesses are available.
Q: What are the width and length tolerances for SPCC? A: Width tolerance ±0.5–±1.0mm (depending on thickness/precision grade), length tolerance ±1.0–±2.0mm, coil tolerance as per contract agreement.
Q: What are the surface quality grades and common defects of SPCC?
A: Grades are divided into standard and high-grade. Common defects include scratches, pitting, roller marks, edge cracks, etc., which must be accepted according to standards and communicated to the customer in advance.