JIS G 3124 High Strength Steel Plates for Pressure Vessels for Intermediate and Moderate Temperature Service

FOR REQUIREMENT OF THIS GRADE OR FOR DETAIL CONTACT US AT :-

www.ladhanimetal.com

www.ladhanimetal.in

ladhanimetal@gmail.com

Introduction

JIS G 3124 specifies high-strength hot-rolled steel plates used for boilers and pressure vessels operating at intermediate and moderate temperatures. These plates are designed to provide high strength, suitable weldability, and reliable mechanical performance for pressure-containing equipment.

Ladhani Metal Corporation supplies high-strength pressure vessel steel plates according to customer requirements, with availability subject to grade, dimensions, thickness, quantity, and delivery specifications.

Applicable Standard

·        Standard: JIS G 3124:2022

·        Standard title: High Strength Steel Plates for Pressure Vessels for Intermediate and Moderate Temperature Service

·        Product form: Hot-rolled high-strength steel plates

·        Intended service: Boilers and pressure vessels

·        Temperature range: Intermediate and moderate temperature service

JIS G 3124:2022 was published on 22 March 2022 and is listed as a current standard by the Japanese Standards Association.

Material Type

·        High-Strength Carbon Steel (CS)

·        Pressure Vessel Steel

·        Boiler Quality Steel

·        Hot-Rolled High-Strength Steel Plate

·        Weldable Structural Pressure Vessel Steel

Scope

JIS G 3124 covers high-strength hot-rolled steel plates intended for boilers and pressure vessels where specified strength and elevated-temperature mechanical properties are required.

Typical applications include:

·        Boilers and pressure-containing components

·        Industrial pressure vessels

·        Heat exchangers

·        Process vessels

·        Power generation equipment

·        Petrochemical and chemical processing equipment

·        Fabricated equipment designed for intermediate and moderate temperature service

Chemical Composition

Chemical composition is controlled to provide the required strength, weldability, and performance at service temperature. The following values are general reference limits from published grade data and earlier editions. Confirm exact limits against JIS G 3124:2022 and the applicable thickness before placing an order.

Note: These values are for general reference and may not reproduce every requirement of the 2022 edition. Carbon equivalent, residual elements, and other alloying limits must be verified against the applicable standard and material certificate.

Mechanical Properties

Mechanical properties depend on the grade, thickness, heat treatment, and test temperature. JIS G 3124 includes elevated-temperature proof-stress requirements as well as room-temperature tensile properties. The figures below are general reference values from published grade data; confirm the applicable thickness-specific requirements before use in engineering design.

Mechanical requirements vary with thickness and specimen type. These reference values should be checked against JIS G 3124:2022 before finalizing material selection.

Manufacturing Process

JIS G 3124 steel plates are produced using controlled steelmaking and hot-rolling processes to achieve the required strength and material consistency.

Typical manufacturing stages include:

·        Steelmaking and refining

·        Chemical composition control

·        Slab casting

·        Reheating and hot rolling

·        Controlled cooling

·        Plate levelling and dimensional finishing

·        Heat treatment, where specified

·        Final inspection and preparation for dispatch

Manufacturing Conditions

Manufacturing conditions are selected according to the grade, thickness, mechanical-property requirements, and purchase specification.

Common conditions may include:

·        As-rolled condition, where permitted

·        Normalized condition

·        Normalized and tempered condition

·        Stress-relieved condition

·        Other specified combinations of plate and test-piece heat treatment

The appropriate condition should be confirmed against the applicable standard and purchaser requirements.

Heat Treatment

Heat treatment may be used to achieve the specified strength, toughness, and service performance.

Depending on the grade and order requirements, applicable conditions may include:

·        Normalizing

·        Normalizing and tempering

·        Stress-relief annealing

·        Heat treatment of test specimens to represent specified fabrication or service conditions

The exact treatment designation and procedure must comply with JIS G 3124 and the agreed purchase specification.

Surface Finish

Available surface finishes may include:

·        Hot-rolled mill finish

·        Descaled surface

·        Shot-blasted surface

·        Pickled surface, where available

·        Primer-coated surface, subject to agreement

The surface finish depends on plate dimensions, intended application, and customer requirements.

Delivery Condition

Plates can be arranged in the required delivery condition, subject to grade and availability.

·        As-rolled condition, where permitted

·        Normalized condition

·        Normalized and tempered condition

·        Stress-relieved condition, where specified

·        Cut-to-length plates

·        Customized surface preparation

The required delivery condition should be stated in the purchase order.

Dimensions and Tolerances

Plates can be sourced according to the required dimensions and applicable standard tolerances.

·        Thickness: as specified by the customer

·        Width and length: according to order requirements

·        Cut-to-size plates: subject to processing feasibility

·        Dimensional tolerances: according to the applicable standard and purchase specification

High-Strength Pressure Vessel Steel Characteristics

JIS G 3124 plates are designed for pressure-containing equipment requiring specified strength and mechanical properties at intermediate and moderate temperatures.

Key characteristics include:

·        High-strength steel grades for pressure vessel applications

·        Elevated-temperature proof-stress requirements

·        Controlled chemical composition and carbon equivalent

·        Weldability considerations for fabrication

·        Suitability for boiler and pressure vessel construction when correctly specified

·        Heat-treatment options according to grade and service requirements

Forms of Supply

Ladhani Metal Corporation can arrange supply in the following forms, subject to availability:

·        High-strength pressure vessel steel plates

·        Boiler quality steel plates

·        Hot-rolled plates

·        Heavy plates

·        Cut-to-size plates

·        Plates in customized dimensions

Applications

JIS G 3124 high-strength steel plates are used in a range of industrial applications, including:

·        Boilers

·        Pressure vessels

·        Heat exchangers

·        Industrial process equipment

·        Power generation equipment

·        Petrochemical plants

·        Chemical processing vessels

·        Fabricated pressure-containing structures

Key Features

·        Designed for boiler and pressure vessel applications

·        High-strength grades SEV245, SEV295, and SEV345

·        Elevated-temperature proof-stress requirements

·        Controlled chemical composition and mechanical properties

·        Weldability and fabrication considerations

·        Available in different dimensions and delivery conditions, subject to order requirements

Availability

JIS G 3124 high-strength steel plates are available on an order basis.

Availability depends on:

·        Required grade

·        Plate thickness, width, and length

·        Order quantity

·        Delivery and heat-treatment conditions

·        Inspection and certification requirements

Please provide the grade, dimensions, quantity, and applicable technical requirements when enquiring.

Conclusion

JIS G 3124 high-strength steel plates are intended for boilers and pressure vessels operating at intermediate and moderate temperatures. The SEV245, SEV295, and SEV345 grades provide different strength levels for pressure-containing applications.

Ladhani Metal Corporation can arrange supply according to the required grade, dimensions, delivery condition, and project specifications.

To place an order or make an enquiry, contact Ladhani Metal Corporation.

FOR REQUIREMENT OF THIS GRADE OR FOR DETAIL CONTACT US AT :-

www.ladhanimetal.com

www.ladhanimetal.in

ladhanimetal@gmail.com

info@ladhanimetals.com

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