HIGH YIELD STRENGTH | S690QL, S890QL, S960QL & 1100 MPa:

STRUCTURAL STEELS & Description:

S690QL S690QL, S890QL ,S960QL AND 1100MPa are high yield strength structural steel grade produced in accordance with EN 10025-6. This steel is designed to provide an excellent combination of high strength, toughness, abrasion resistance and weldability.

PRODUCT DESIGNATION:

S - Structural steel

690 - Minimum yield strength MPa

Q - Quenched and tempered delivery condition

L - Impact energy tested at -40º

TYPICAL APPLICATIONS:

S69QL is a very high strength structural steel and can result in greater load-carrying capacities and lighter structures when used in place of conventional structural steels. Uses includes as below:

*Earthmoving Equipment: Booms and Arms,

*Dump Trucks, Tip Trailers

*Mobile Cranes, Marine Cranes ,Truck Cranes ( Lifting Equipments )

*Drilling Rigs,

*High-Speed Fans, Industrial Fans

*Bridges, Millitary Bridges

*Heavy Duty Axles

*Stabilising Support Stabilising structures

*Crane Booms

*Undercarriage ..

CHEMICAL COMPOSITION:

GRADES	C	Si	Mn	P	S	N	B	Cr	Mo	Ni	Ti	V	Al
S690QL	0.20	0.60	1.50	0.02	0.010	0.014	0.005	0.600	0.500	1.00	0.040	0.070	0.070
S890QL	0.20	0.50	1.50	0.02	0.010	0.005	0.005	0.700	0.700	1.50	0.100	0.060	0.060
S960QL	0.20	0.50	1.50	0.020	0.010	0.005	0.005	0.700	0.700	1.500	0.100	0.060	0.060
1100MPa	0.20	0.50	1.50	0.020	0.010	0.005	0.005	0.700	0.700	1.500	0.100	0.060	0.060

MECHANICAL PROPERTIES:

GRADES	Nominal Thickness (mm)	Minimum Yield Strength (MPa)	Tensile Strength (MPa)	Minimum Elongation (%)	Minimum Impact Energy (J) @ -40°C	Minimum Recommended inside bend Radii
S690QL	3mm-150mm	690-930	770-900	14	30 longitudinal or 27 transverse	3xt - transverse 4xt - longitudinal
S890QL	4mm-40mm	890	930-1100	12	27 longitudinal or transverse	4.5xt - transverse 5xt - longitudinal
S960QL	4mm-30mm	960	980-1150	12	27 longitudinal or transverse	4xt -transverse 5xt-longitudinal
1100MPa	3mm-30mm	1100	1250-1500	10	27 longitudinal or transverse	4.5xt -transverse 5xt-longitudinal

NOTE:

• Chemical composition: Ladle/ product analysis in %max

• Mechanical properties: At ambient temperature

• Typical hardness 235-295 BHN: For information purpose only, it is not a requirement for structural steels and therefore not tested

• Recommended inside bend radii: The values are applicable for bend angles ≤90°

• Dimensions and tolerances in accordance with EN 10029

FABRICATION:

S690QL steel plate can be readily formed or bent at room temperature if adequate power is available and proper procedures are used.

Generally, the power required to form S690QL will be three times that required for carbon structural steel.

HOT FORMING:

These are quenched & tempered plates so avoid exceeding temperature of plate more than 560ºC during fabrication or handling , because the initial tempering temperature might be altered so that the mechanical properties will be affected.

APPROXIMATE EQUIVALENT GRADES: :

ASTM A514, EN 10149-2 Grade S700MC, AS/NZS 3579 Grade 700, AM 700, BISALLOY 80.

HIGH YIELD STRENGTH PLATES /SHEETS

Mill Name	Country	Q&T- Brand /Grade	Thickness Range	TMCP-/Brand/Grade	Thickness Range
TATA STEEL	India	-----	-----	S700MC	3mm-12mm
AMNS	India	S690QL	6mm-100mm	S700MC	3mm-12mm
JSPL	India	S690QL	6mm-150mm	----
JFE STEEL	Japan	HITEN 780LE	5mm-101mm	S700MC	3mm-12mm
NSSMC	Japan	WELTEN 780	3mm-100mm	----	----
SSAB	Sweden	WELDOX/STRENX700	1mm-120mm	DOMEX700	1mm-12mm
RUUKKI	Finland	OPTIM700	-----	OPTIM700	2mm-12mm
NLMK	Belgium	QUEND700/900/1100	3mm-60mm	-----	-----
INDUSTEEL	India	-----	-----	S700MC	3mm-12mm
TATA CORUS	United Kingdom	RQT 70	6mm-100mm	S700MC	-----
ACRONI	Slovenia	SIMAXX700/900/1000/1100	6mm-120mm	----	----
DILLINGER HUTTE	Germany	DILLIMAX690/890	8mm-150mm	----	----
SALZGITTER	Germany	S690QL	3mm-100mm	----	----
THYSSENKRUPP	Germany	NEXTRA 70	10mm-100mm	----	3mm-12mm
BISALLOY	Austtralia	Bisalloy-80	5mm-60mm	----	----
VOESTALPINE	Austria	S690QL	3mm-80mm	S700MC	----
ARCELOR MITTAL	South Africa	ROQ-tuf® AM700	6mm-30mm	----	----