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S550QL1

S550QL1 is a high-strength structural steel grade characterized by its exceptional toughness and weldability. It belongs to the EN 10025-6 standard and finds applications in construction, mining, and offshore industries. S550QL1 offers a high yield strength and excellent impact resistance, making it suitable for demanding environments subjected to heavy loads and extreme conditions. This steel grade ensures reliable performance and allows for efficient fabrication and assembly of structures while maintaining structural integrity and safety. With its superior properties, S550QL1 contributes to extended equipment lifespan and reduced maintenance costs.

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Product Introduction

EN10025-6 S550QL1 High strength Steel Plate

EN10025-6 S550QL1 Carbon and Low-alloy High-strength Steel Plate Chemical Composition

Chemical composition % max
Grade	C	Mn	Si	P	S	N	B	Cr	Cu	Mo	Nb	Ni	Ti	V	Zr
S550QL1	0.22	1.80_	0.86	0.025	0.012	0.016	0.006	1.6	0.55	0.74	0.07	2.1	0.07	0.14	0.17

EN10025-6 S550QL1 Carbon and Low-alloy High-strength Steel Plate Mechanical Property

S550QL1 Mechanical properties min
Yield strength (Mpa)			Tensile strength (Mpa)			Elongation %
>3 ≤50	>50≤100	>100≤150	>3 ≤50	>50≤100	>100≤150
550	530	490	640-820	640-820	590-770	16

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