Basic properties of SA517 GrB steel sheet for nuclear power

SA517 GrB is a steel plate for nuclear power, with high strength, good plasticity, toughness and welding performance, used for nuclear power plant mechanical module supports, boilers, pressure vessels, etc.

SA517 GrB steel sheet executive standard: ASME SA517/SA517M.

The chemical composition and melting analysis of SA517 GrB steel plate are as follows:

C	Si	Mn	P	S	Cr	Mo	B	V	Ti
0.10-0.20	0.15-0.30	0.70-1.00	≤0.035	≤0.035	0.40-0.65	0.15-0.25	≤0.0005-0.005	0.03-0.08	0.01-0.03

Mechanical properties and impact temperature of SA517 GrB steel sheet:

Thickness	ReL,MPa	Rm,MPa	A50,%	Area shrinkage		20Impact side expansion
				Rectangular	Circle
≤65mm	≥690	795-930	≥16	≥35	≥45	≥0.38
≥65mm	≥620	725-930	≥14	/	≥45

Delivery condition of SA517 GrB steel plate: quenched and tempered (QT). Technical advantages of thick plate TMCP process: The thick plate TMCP process adopts micro-alloying technology, which further improves the welding and forming characteristics of the steel plate while ensuring the strength and toughness of the steel plate.

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