Quality Prediction and Control of Assembly and Welding Process for Ship Group Product Based on Digital Twin

Table 2

Chemical composition and mechanical properties of the material.

C(%)	Mn(%)	Si(%)	S(%)	Yield strength (MPa)	Tensile strength (MPa)	Elongation (%)
≤0.18	0.70~1.60	0.10~0.50	≤0.04	315	440~590	22