LY225 steel plate for seismic design of building structures

LY225 steel plate is a low yield point steel plate for seismic design of building structures. LY225 steel plate designation:
LY - English letter in "low yield";
225 - target value of regular yield strength, unit: MPa

LY225 steel plate heat treatment process: the steel plate is subject to hot rolling, controlled rolling or heat treatment.

Chemical composition of LY225 steel plate (melting analysis):

Grade	C	Si	Mn	P	S	N
LY225	≤0.10	≤0.10	≤0.60	≤0.025	≤0.015	≤0.006

Mechanical properties of LY225 steel plate:

Grade	Tensile test				V-shaped impact test
	Lower yield strength MPa	Tensile strength MPa	Elongation after fracture A% Min.	Yield ratio Max.	Test temperature/℃	Impact absorbed energy J Min.
LY225	205-245	300-400	40	0.8	0	27

LY225 steel plate (low yield point seismic steel) has the characteristics of ultra-low yield point, high ductility, high toughness and repeated fatigue. Therefore, it has excellent seismic performance, which can be used to manufacture dampers and protect building structures from earthquake.