S690QL high strength steel plate

Classification :

S690 QL is a high yield structural steel grade produced in compliance with EN 10025:6:2004. The material is heat treated using the quench and temper process and has good bending and welding properties.

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Hight Strength Low Alloy Steel

Product introduction

Due to the materials high strength nature, using S690QL will promote leaner designed structures with increased payload capacity and energy efficiency.
The technical details of S690QL are outlined below.
S690QL - Grade Designation
The grade designation of S690QL are the following:
S = Structural Steel
690 = minimum yield strength (MPa)
Q = Quenching & Tempering
L = Low notch toughness testing temperature

Technical data

S690QL - Chemical Composition
The chemical composition of S690QL is provided in the table below.

Element	Percentage %	Element	Percentage %
C	0.20	Cu	0.50
Si	0.80	Mo	0.70
Mn	1.70	Nb*	0.06
P	0.025	Ni	2.0
S	0.015	Ti*	0.05
N	0.015	V*	0.12
B	0.0050	Zr*	0.15
Cr	1.50

* At least 0.015% of grain-refining element present. Aluminium is also one of these elements.

S690QL - Mechanical Properties
The mechanical properties of S690QL is outlined in the table below.

Designation		Mechanical Properties (ambient temperature)
Steel Name	Steel Number	Min. Yield Strength Reh MPa			Tensile Strength Rm MPa			Min. % elongation after fracture
		Nominal thickness (mm)			Nominal thickness (mm)
		≥3 ≤50	≥50 ≤100	≥100 ≤150	≥3 ≤50	≥50 ≤100	≥100 ≤150
S690QL	1.8931	690	650	630	770/940	760/930	710/900	14

S690QL - V Notch Impact Testing
The V Notch impact testing details are given in the table below.

Grade	Sample Orientation	@ 0°C	@-20°C	@-40°C	@-60°C
S690QL	Longitudinal	50 J	40 J	30 J	¨C¨C
S690QL	Traverse	35 J	30 J	27 J	¨C¨C

(Please note: the technical information above is for guidance only ¨C for exact specifications please check with Masteel)

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The annual output of the factory is 400,000 tons, and the current inventory is more than 100,000 tons, which can greatly save the purchasing time of customers and ensure the production cycle and product quality of customers. We are a quality partner for domestic and foreign customers. At present, there are 14 steel production lines for processing, bending, coating, heat treatment, cutting, drilling, chamfering, conditioning, surface treatment and 13 sets of processing equipment.

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Hight Strength Low Alloy Steel