Pressure vessel steel plate DIN EN 10028-6 P690Q-834

Pressure vessel steel plate DIN EN 10028-6 P690Q-833

Pressure vessel steel plate DIN EN 10028-6 P690Q-832

Pressure vessel steel plate DIN EN 10028-6 P690Q-831

Pressure vessel steel plate DIN EN 10028-6 P690Q-thumbnail-834

Pressure vessel steel plate DIN EN 10028-6 P690Q-thumbnail-833

Pressure vessel steel plate DIN EN 10028-6 P690Q

EN 10028-6 P690Q is a high-strength, weldable fine-grain steel plate specifically designed for the manufacture of pressure vessels and boilers.

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Product Description

EN 10028-6 P690Q is a high-strength, weldable fine-grain steel plate specifically designed for the manufacture of pressure vessels and boilers. The “P690” indicates the minimum yield strength of 690 MPa, while the “Q” signifies that the steel has undergone quenching and tempering to achieve its high-strength properties.

Quenched and tempered boiler steel plate P690Q shall be rolled according to steel standard EN 10028-6.The chemical composition of pressure vessel steel plate P690Q is within the table below. For reasons of hot formability,a lower copper content and a maximum tin content may be agreed at the time of inquiry and order.The tensile strength of pressure vessel steel plate P690Q shall be within 770-940 Mpa,and yield strength have to be above 690 Mpa for the steel plate thiclness equal and belows 50 millimeters.

P690Q Chemical Composition and Mechanical Property

P690Q Chemical Composition
Grade	The Element Max (%)
Grade	C	Si	Mn	P	S	N	B
P690Q	0.20	0.80	1.70	0.025	0.015	0.015	0.005
	Mo	Cu	Nb	Ni	Ti	V	Cr
	0.70	0.3	0.06	2.50	0.05	0.12	1.50

Grade	P690Q Mechanical Property
Grade	Thickness	Yield	Tensile	Elongation
P690Q	mm	Min Mpa	Mpa	Min %
	6-50	690	770-940	14%
	50-100	670	770-940	14%
	100-150	630	720-900	14%

Key Properties of P690Q Steel Plate

Weldability: As a weldable fine-grained steel, P690Q can be welded by methods such as arc welding and submerged arc welding, and the performance of the weld is matched with that of the base metal.
Cold Bending Performance: It has good cold bending plasticity, which can meet the bending processing requirements in container manufacturing.
Low-Temperature Toughness: The “Q” grade indicates that it is suitable for low-temperature environments of 0℃/-20℃, with excellent impact toughness, which can prevent brittle fracture at low temperatures.

Heat Treatment Process of P690Q Steel Plate

The typical heat treatment process of P690Q is as follows:

Heating: Heat the steel plate to 830℃~850℃ and keep it at this temperature for 20~30 minutes.
Quenching: Rapid cooling (such as water spray quenching) for 8~10 seconds.
Tempering: Heat the quenched steel plate to 380℃~400℃ and keep it at this temperature for 60~90 minutes to achieve a good balance between strength and toughness.

What Are the Application Fields of P690Q Steel Plate?

Due to its combination of high strength and high toughness, P690Q steel plate is highly suitable for scenarios involving heavy loads, high stress, or the pursuit of lightweight design.

In the field of engineering machinery, it is often used for structural components such as large excavator arms, crane booms, and mining machinery.

Meanwhile, in bridge engineering, this type of steel plate is also widely applied to key load-bearing parts of long-span bridges, such as steel box girders and cable towers.

In addition, the marine and offshore engineering field also favors it—high-strength structures like ship decks and bulkheads cannot do without it.

Finally, in terms of energy equipment, high-performance steel plate is often used for support structures of wind turbine towers and heavy pressure vessels.

If you want to learn about or purchase otherpressure vessels and boilers plates from GNEE, you can send an email to [email protected]. We will be very happy to serve you.