Q: What is SPCC?
A: SPCC is an abbreviation for "Steel Plate Cold Commercial" in JIS standards. It refers to ordinary commercial-grade cold-rolled low-carbon steel sheet with a smooth surface, high dimensional accuracy, and suitable for general forming processes.
Q: What are the core components and range of SPCC?
A: C≤0.12%, Mn≤0.50%, P≤0.035%, S≤0.035%, Al≥0.02%. Low carbon content ensures plasticity and weldability.
Q: What is the core difference between SPCC and SPHC?
A: SPCC is cold-rolled, resulting in a smoother surface, higher precision, and a slightly higher price; SPHC is hot-rolled, resulting in a rougher surface, lower cost, and suitability for thick plates and applications requiring low surface finish.
Q: What are the common surface grades of SPCC?
A: Common grades include Ordinary (O), Higher Grade (D), and High Grade (B), graded according to surface defects, roughness, and gloss to suit different coating/electroplating requirements.
Q: What is the typical thickness range of SPCC?
A: Generally 0.4–3.2mm, mainly for thin plates, suitable for stamping, bending and other thin plate processing.