Study on Preparation and Properties of High-Strength Nano-Ceramic Coating on the Surface of Steel Structure Connectors

Table 1

Q235 steel composition (mass percentage).

Element	Content (%)	Element	Content (%)
C	0.141–0.222	S	≤0.052
Mn	0.302–0.651	P	≤0.0453
Si	≤0.303	Fe	Margin