JIS G 3127 Nickel Steel Plates for Pressure Vessels for Low Temperature Service – Nickel Alloy Steel Plates

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

www.ladhanimetal.com

www.ladhanimetal.in

ladhanimetal@gmail.com

Introduction

JIS G 3127 specifies hot-rolled nickel steel plates used for pressure vessels and storage equipment designed for low-temperature service. These plates provide the strength and impact toughness required for applications exposed to cryogenic temperatures, including liquefied gas storage and processing facilities.

Ladhani Metal Corporation can arrange supply of nickel steel plates according to customer requirements, subject to grade, thickness, dimensions, quantity, and delivery specifications.

Applicable Standard

·        Standard: JIS G 3127:2021

·        Standard title: Nickel Steel Plates for Pressure Vessels for Low Temperature Services

·        Product form: Hot-rolled nickel steel plates

·        Material category: Nickel Alloy Steel

·        Intended service: Low-temperature pressure vessels and storage equipment

·        Lowest service temperature: Depends on the grade, heat treatment, and specified impact-test requirements

Material Type

·        Nickel Alloy Steel

·        2.25% Nickel Steel

·        3.5% Nickel Steel

·        9% Nickel Steel

·        Low-Temperature Pressure Vessel Steel

·        Cryogenic Service Steel Plates

Scope

JIS G 3127 covers hot-rolled nickel steel plates for pressure vessels and storage equipment used at low temperatures. Nickel additions improve low-temperature toughness, while the specified heat-treatment conditions help achieve the required mechanical properties.

Typical applications include:

·        Liquefied natural gas (LNG) storage tanks

·        Low-temperature pressure vessels

·        Liquefied gas processing equipment

·        Cryogenic storage systems

·        Heat exchangers

·        Gas processing facilities

·        Petrochemical and chemical processing equipment

Chemical Composition

The following table provides general reference values for representative JIS G 3127 nickel steel grades. Values are percentages by weight. Exact limits can vary by grade and standard requirements, so the applicable specification and material test certificate should be checked before ordering.

Note: This is a general reference table, not a complete grade-by-grade specification. The exact composition limits for SL3N440 and SL7N590, along with any additional element restrictions, must be verified against the applicable standard edition. Heat analysis values should be confirmed from the mill test certificate.

Mechanical Properties

Mechanical properties depend on grade, thickness, heat treatment, test specimen, and impact-test temperature.

Low-temperature Charpy impact performance is an important requirement for JIS G 3127 plates. Acceptance values depend on the grade and specified test temperature. Confirm the exact tensile, elongation, and impact requirements against the standard before engineering use.

Manufacturing Process

JIS G 3127 nickel steel plates are manufactured through controlled steelmaking, hot rolling, and heat treatment.

Typical manufacturing stages include:

·        Steelmaking and refining

·        Nickel alloy addition and chemical composition control

·        Slab casting

·        Reheating and hot rolling

·        Controlled cooling

·        Heat treatment according to grade requirements

·        Plate levelling and dimensional finishing

·        Final preparation for dispatch

Manufacturing Conditions

Manufacturing conditions are selected according to the nickel content, grade, plate thickness, and specified mechanical properties.

·        Controlled steelmaking and alloy additions

·        Hot rolling to the required dimensions

·        Control of low-temperature toughness

·        Heat treatment according to the grade specification

·        Dimensional and flatness control

·        Surface preparation according to customer requirements

Heat Treatment

Heat treatment is essential to achieve the specified strength and low-temperature toughness of nickel steel plates.

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

·        Normalizing (N)

·        Normalizing and tempering (NT)

·        Thermo-mechanical controlled processing (TMCP), where permitted

·        Double normalizing and tempering (NNT)

·        Quenching and tempering (Q&T), where specified

The applicable heat-treatment designation must be confirmed for the selected grade and documented in the purchase order.

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

Surface preparation depends on plate dimensions, storage requirements, and customer specifications.

Delivery Condition

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

·        Normalized condition

·        Normalized and tempered condition

·        Quenched and tempered condition

·        Thermo-mechanically controlled processed condition, where specified

·        Cut-to-length plates

·        Customized surface preparation

The required heat-treatment and delivery condition should be stated in the purchase order.

Dimensions and Tolerances

Plates can be supplied 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

Low-Temperature Nickel Steel Characteristics

JIS G 3127 nickel steel plates are designed for pressure-containing equipment where low-temperature toughness is essential.

Key characteristics include:

·        Nickel alloying for low-temperature performance

·        Specified tensile and yield strength

·        Impact-toughness requirements at designated temperatures

·        Grade-dependent heat-treatment conditions

·        Suitability for cryogenic storage and pressure equipment when correctly specified

·        Fabrication and welding suitability when appropriate procedures are followed

Forms of Supply

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

·        Nickel alloy steel plates

·        2.25% nickel steel plates

·        3.5% nickel steel plates

·        7% nickel steel plates

·        9% nickel steel plates

·        Low-temperature pressure vessel plates

·        Heavy plates and cut-to-size plates

·        Plates in customized dimensions

Applications

JIS G 3127 nickel steel plates are used in:

·        LNG storage tanks

·        Cryogenic pressure vessels

·        Liquefied gas storage facilities

·        Low-temperature process equipment

·        Heat exchangers

·        Gas processing plants

·        Petrochemical facilities

·        Industrial storage equipment for low-temperature service

Key Features

·        Nickel steel plates for low-temperature pressure vessel service

·        Multiple nickel-alloy grades and strength levels

·        Controlled chemical composition

·        Specified tensile and yield strength

·        Low-temperature impact-toughness requirements

·        Heat-treatment options according to grade

·        Available in different dimensions, subject to order requirements

Availability

JIS G 3127 nickel steel plates are available on an order basis.

Availability depends on:

·        Required grade

·        Nickel content

·        Plate thickness, width, and length

·        Order quantity

·        Heat-treatment condition

·        Low-temperature impact-test and certification requirements

Conclusion

JIS G 3127 nickel steel plates are designed for pressure vessels and storage equipment operating at low temperatures. Grades such as SL2N255, SL3N255, SL3N275, SL3N440, SL7N590, SL9N520, and SL9N590 provide different nickel contents and strength levels for specialized service requirements.

Ladhani Metal Corporation can arrange supply according to the required grade, dimensions, heat-treatment 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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