S690QL high yield structural steel plate

Description

S690 steel is a structural steel with a minimum yield strength of 690 MPa depending on thickness. It meets the requirements of EN 10025-6 for the S690 grade and thicknesses. Typical applications include demanding load-bearing structures.

S690QL steel is available in plate thicknesses of 4 – 160 mm, while S690QL1 is available in plate thicknesses of 4 – 130 mm.

Benefits include:

• Superior bendability and surface quality
• Weldability with excellent HAZ strength and toughness
• Exceptional consistency within a plate guaranteed by close tolerances
• High impact toughness which provides for good resistance to fractures

Dimension Range

S690QL is available in plate thicknesses of 4 – 160 mm and S690QL1 is available in plate thicknesses of 4 - 130 mm. Both grades are available in widths up to 3350 mm and lengths up to 14630 mm depending on thickness.

Mechanical Properties

For transverse test pieces.

Impact Properties

1. Unless otherwise agreed, transverse impact testing according to EN 10025-6 option 30 will apply. For thicknesses between 6 - 11.9 mm, sub-size Charpy V-specimens are used. The specified minimum value is then proportrional to the cross-sectional area of the specimen compared to a full-size specimen (10 x 10 mm).

Chemical Composition (ladle analysis), %, max

The steel is grain refined.

Thickness

Tolerances meet the requirements of EN 10029 Class A, but offers narrower tolerances.

Length and Width

Tolerances conform with EN 10029.

Shape

Tolerances according to EN 10029

Flatness

Tolerances according to EN 10029 Class N.

Surface Properties

According to EN 10163-2 Class A, Subclass 3.

Delivery Conditions

The delivery condition is Q+T (Quenched and Tempered). The plates are delivered with sheared or thermally cut edges. Untrimmed edges after agreement.

Fabrication and Other Recommendations

Welding, bending and machining

S690QL steel and S690QL steel has obtained its mechanical properties by quenching and subsequent tempering. The properties of the delivery condition cannot be retained after exposure to temperatures in excess of 580 ºC.

Appropriate health and safety precautions must be taken when welding, cutting, grinding or otherwise working on this product. Grinding, especially of primer coated plates, may produce dust with a high particle concentration.

Specification

Plate thickness: 4-100mm

Width: 500mm – 4700mm

Length: On request

Production process

Suzhou Vanforge Metals Co., Ltd. was set up in April 1999 with a registered capital of 230 million Yuan in Zhangjiagang Bonded Area in Jiangsu Province of China. It has developed to be an important R&D and manufacture enterprise of high performance stainless steels and nickel alloys.

Vanforge is a high-tech enterprise with 70 national patents, it has its own Special Alloy Research Center, academician workstation and post doctorate innovation practice base. Vanforge has been certificated the national laboratory accreditation of ISO/IEC 17025, and ISO9001, ISO14001, OHSAS18001, API Q1, IATF16949, GB/T23331, TUV, CCS, DNV, LR, ABS.

Vanforge has the international advanced special smelting capacity, including the German ALD 6t vacuum induction furnace, 6t consumable electrode vacuum furnace, 18t drawing-ingot protective atmosphere electroslag furnace and 1t vacuum induction furnace, 3t electroslag furnace, 18t drawing-hollow ingot electroslag furnace, and 2# Purification Furnace/1# Purification Furnace/LF/AOD/VOD refining production line, 25MN/8MN fast forging machine, 450/320 rolling mill, etc.

The current annual production capacity of Vanforge is 120,000 tons, and the main products are high-grade special alloy materials, including high temperature alloy, corrosion resistant alloy, precision alloy, ultra high strength steel, special stainless steel, high-grade tool and mould steel, steam turbine blades steel, gas turbine steel, ultra-supercritical materials, etc., which are widely used in aviation, aerospace, ship, petrochemical, nuclear power, electronics, steam turbine, high-speed rail, machinery manufacturing, and other fields; besides, we can organize the research and development and production of new materials according to customer demand for new materials. Vanforge has now become a qualified supplier of domestic high-end equipment manufacturing enterprises, such as CASIC, CGN, CRRC, CFHI, Wujin Stainless, Zhejiang Jiuli Hi-Tech Metals Co., Ltd., Xinxing Ductile Iron Pipe Co., Ltd., etc.

We always adhere to the concept of quality first, integrity based, scientific and technological innovation, making progress, and wholeheartedly serving customer and devote ourselves to becoming the well-known supplier of key basic materials of world’s high-end equipment manufacturing industry.

We supply following products in the forms of wires, bars, plates

(Super) austenitic stainless steels

(Super) duplex stainless steels

(Supper) Ferritic stainless steels

Precipitation hardening stainless steels

Incoloy alloys

Inconel alloys

Monel alloys

Hastelloy alloys

As well as following steel products

Gear steels

Bearing steels

Spring steels

Drilling tool steels

Free-cutting steels

Anchor steels, mooring chain steels

Mining chain steels

Die steels, Mold steels, tool steels

Structural steels

Antiwear steels

Offshore structure steels

Petroleum storage tank steels