What is the typical thickness range of cold-rolled steel sheets?
Standard thickness is 0.1mm-3.0mm. Thinner or thicker sheets can be customized for special requirements.
What are the yield strength and tensile strength standards for cold-rolled steel sheets?
For common materials (such as SPCC), the yield strength is ≥130MPa, and the tensile strength is 300-400MPa. These values vary depending on the material.
What are the surface roughness requirements for cold-rolled steel sheets?
Common surface roughness is Ra 0.1-0.8μm. Different roughness grades can be selected depending on the application.
What are the classifications of hardness for cold-rolled steel sheets?
They are classified as soft (HRB 60-80), semi-hard (HRB 80-100), and hard (HRB 100 and above). The appropriate hardness should be selected based on the specific application.
How is the corrosion resistance of cold-rolled steel sheets?
Their inherent corrosion resistance is generally average. Surface treatments such as galvanizing and painting are needed to improve corrosion resistance.