Quenched and Tempered Steel Plate

Quenched and Tempered Steel Plate Manufacturers

Quenched and Tempered Steel Plate Stockist India

Quenched and Tempered Steel Plate Suppliers India

Champak Steel Stockist and manufacturers of Weldox 700E, Dillimax 690E, Naxtra M700, JFE Hiten 780LE,Sumiten 780S, Quenched and Tempered Steel Plate, Exporter, Stockist, Manufacturer, Suppliers India.Champak Steel & Engg. Co. offers one of the largest ranges of 690 MPa yield steels in Europe in thicknesses from 3 mm to 300 mm.

Stock is available from our warehouses in the India and can be despatched worldwide by our logistics teams.
Quenched and tempered structural steel plate has the considerable advantage of providing high strength while offering weight reductions in fabrications. At Champak Steel & Engg. Co. we supply a a range of sophisticated high strength low alloy steel plates from leading Western European producers.

Send Online Enquiry

This type of steel plate is used in the manufacture of cranes, forklifts, bridges, offshore fabrications, mining and quarrying equipment, mooring equipment, and vehicle chassis to name but a few applications.

Specifications and Grades from Stock

• EN 10025 S690QL, S690QL1
• RQT 701 (from Tata Steel)
• Weldox 700E (from SSAB)
• Dillimax 690E (from Dillinger Hutte)
• Naxtra M700 (from Thyssen Krupp)
• JFE Hiten 780LE (from JFE Steel Corporation)
• Sumiten 780S (from Sumitomo Metals Japan)

Machining :

The RQT range can be machined and drilled using high-speed steel or cemented carbide tools. The approximate hardness of the RQT range can be obtained from the value of the ultimate tensile strength and falls within the range 240-280 BHN.

Welding :

Care should be taken to avoidhydrogen cracking and there are many factors to take into consideration before welding. Full technical guidance for welding is available from the sales/technical team at Champak Steel & Engg. Co.

Technical Specifications :

Flame Cutting :

RQT steels can be cut satisfactorily using conventional oxy-fuel gas practices, in many cases without the need for preheat, as long as cutting procedures take into account plate thicknesses and carbon equivalent values. Water jet, where no heat is generated, or plasma cutting can also be used. Care should be taken when cutting under water as the quenching effect could result in a high hardness edge forming. With all thermal cutting processes care should be taken that cut edges are free from sharp notches.

Cold Bending :

Quenched & Tempered steels can be readily cold formed however the power required will be higher (70%) than that for mild steel of the same thickness. It is recommended that the largest possible bending radius should be used, and generally the inside radius should not be less that 3 times the plate thickness.

Bend axis vs. rolling direction	Minimum inside bending radius	Minimum die opening
Perpendicular	3t	8.5t
Parallel	4t	10t

Weldability and Toughness :

Thickness (mm)	Maximum (CEV (%)	Impact Values (min)
8<t<30	0.43	27J @ -45°C
30<t<40	0.52	27J @ -45°C
40<t<100	0.57	27J @ -45°C
100<t<130	0.61	27J @ -45°C

Mechanical Properties
	Yield MPa min	Tensile MPa	Elongation % min
8 - 70mm	690	790 - 930	18
Above 70mm	630	690 - 930	18

Download PDF

File Name

Quenched and Tempered Steel Plate Size range :

Quenched and Tempered Steel Plate Thicknesses: 3mm – 200mm
Quenched and Tempered Steel Plate Widths: 2m, 2.5m, 3m
Quenched and Tempered Steel Plate Lengths: Up to 12m long

Top