Steel Division

Pressure vessel Industry

Exploring the limits of performance down to -196 °C

“We are your reliable partner in the supply of steels for pressure vessels, apparatuses and power generation equipment, understand our customers and provide the quality they need” As the world’s only single-source supplier of shell plates, heads and cones in carbon steel and roll-bonded clad plates, we are able to provide optimized workability and lower expense for our customers.

voestalpine High-quality package

A high-quality package

We are a single-source supplier of shell plates, heads and cones made of plain carbon steel, in roll-bonded clad design and for sour service. 

Reduce the wall thickness of your componens by using our high-strength CrMo and CrMoV steel und chose your ideal plates dimension up to 200 mm in thickness and 24 tons per plate.


Cryogenic nickel plates

We offer 5%- and 9%-nickel steels according to EN 10028-4 and ASTM 553 in plate thickness range up to 70 mm, width up to 3,800 mm, length up to 12,700 mm and up to 13 tons per single plate. 

The revision of API Standard 620 in 2018 has made it possible to use ASTM steel grades A 645 Gr A and Gr B for the construction of ethylene, LPG or LNG tanks. Our state-of-the-art production facilities make it possible for us to manufacture both steel grades A 645 Gr A and Gr B as well as conventional 5% and 9% nickel steels.

voestalpine unsere Antwort auf Korrosion

Our answer to corrosion

Clad plates are the economic alternative to expensive high-alloy and non-clad plates. Roll-bonded clad plates are our answer to corrosion and explosion. 

With a cladding capacity of 60,000 tons a year, we are World´s leading producer of roll-bonded clad plates.

Broad range of expertise

We supply steel plates and material expertise for the penstocks of hydro-power stations and provide high-strength heavy plates as fine-grained steels with a minimum yield strength of 700 MPa in TMCP, direct-quenched and tempered or quenched and tempered condition. 

In a first-time application of high-strength TMCP steel, special-grade alform plate 700 M of voestalpine was successfully used in the penstock of the Reisseck pumped-storage hydro-power station in Austria.

voestalpine Böden und Konen, Qualitätspressteile

Heads and cones, high quality pressed parts

Offering shell plates, heads and cones from a single source, made of carbon steel and roll-bonded clad plates.

In our own Single-part and multi-part heads and cones, special pressed parts

We manufacture custom-made heads as a single part or welded from multiple parts. Multi-part heads and cones are available in head gauges of up to 160 mm and diameters of up to 14,000 mm.

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Heavy plates


Heads and cones

The wide range of dimensions seen in other products made by voestalpine is also true of the high-quality boiler heads, cones and special pressed parts. They are also available in clad design upon request.

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Heads and cones

Successful throughout the world

Our boiler bottoms are used in heat exchangers, separators, columns, compressors, storage tanks and tank railcars. Our customers are found in the petrochemical industry, the oil and gas industry, the pulp and paper industry, the energy sector and in railcar construction. We are the world's only single-source supplier of shell plates, heads and cones made of carbon steel or in clad design.

Our materials

We use structural, fine-grained structural and pressure vessel steels in our carbon-steel heads and pressed parts.

We manufacture clad heads and pressed parts from conventional carbon steels. We offer stainless and heat-resistant steel grades as well as non-ferrous metals and alloys as coating materials to attain optimum corrosion properties.

Head shapes and dimensions

We produce heads welded in one or more parts according to customer specification. Multi-part cones are available with base thicknesses of up to 170 mm and diameters of up to 12,000 mm.

Heavy plates for hydrogen application

Heavy plates for hydrogen application

Helping to achieve the global climate goals, voestalpine Grobblech is providing a variety of high quality steel grades for the entire hydrogen value chain.

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Heavy plates for hydrogen application

Being part of the green future

Globally increasing energy demand in combination with the governmental efforts to reduce the emission of greenhouse gases are generating a growing demand for an alternative energy source. Green hydrogen, sustainably produced by means of electrolysis and powered by the sun, the wind or the force of the water, builds the basis for the energy revolution.

Being part of this sustainable future and helping to achieve the global climate goals, voestalpine Grobblech is providing a variety of high quality steel grades for the entire hydrogen value chain.

Fit for hydrogen

Depending on your actual requirements, voestalpine Grobblech GmbH offers a tailor-made solution to fit perfectly for your application. 

In accordance with your individual specification, you are able to choose the adequate material concept, whether for the save and reliable hydrogen distribution via a pipeline, the storage of H2 in a large-scale tank, for process piping in hydrogen atmosphere or for reactor columns in most severe and corrosive environment. 

voestalpine Grobblech´s new H2fit heavy plate product family is the right choice.

H2fit basic

H2fit basic heavy plates are characterized by a very low content of phosphorus or sulfur. Thanks to our state of the art steel-work-route and utilizing an intense vacuum degassing practice these unfavourable residual elements can be reduced to a minimum. Furthermore our slabs are produced with the latest strand-cast technology. The dynamic soft reduction as part of our slab casting process enable to minimize center segregations of the so produced high-quality slabs. 

H2fit basic heavy plates typically find their application at low pressure and low temperature in pure H2 environment such as for transition or distribution pipelines or large-scale H2 storage tanks.

H2fit classic

Our classical steel grades for sour service H2fit classic show an outstanding resistance against hydrogen induced cracking (HIC). In addition to very low residual elements and the soft reduction, these particular steel grades undergo a special treatment in our steel plant. By treating the liquid steel with a calcium-silicon wire, the inclusion shape can be controlled. 

The classic application for this type of plates are e.g. H2 buffer tanks, columns and piping at medium pressure and temperature as well as in sour atmosphere.

H2fit severe

When it comes to severe operating conditions like high temperature and pressure in combination with a sour and corrosive environment, H2fit severe is the right choice. The combination of our HIC resistant steel grades and a stainless steel clad layer even allows for applications like reactors or piping in the H2 processing industry.

Application matrix for hydrogen

Application matrix for hydrogen

Typical steel grades

H2fit basic:



(S)A 516 / 537 C. 1 / Cl. 2

H2fit classic:

(S)A 516 Gr. 60 / 65 / 70 acc. to ASTM / ASME

(S)A 537 Cl. 1

P 235-460

H2fit severe Clad:

P 235-690 + 304 / 316 / 317 *)

(S)A 516 / 537 Cl. 1 / Cl. 2 + 304 / 316 / 317 *)

(S)A 387 Gr. 11 / Gr. 22 + 304 / 316 / 317 *)

H2fit severe Clad + HIC:

(S)A 516 Gr. 60 / Gr. 65 / Gr. 70 acc. to ASTM / ASME + 304 / 316 / 317 *)

(S)A 537 Cl. 1 + 304 / 316 / 317 *)

P 235-460 + 304 / 316 / 317 *)

(S)A 387 Gr. 11 + 304 / 316 / 317 *)

*) Typical austenitic stainless steel grades; Ni-basis alloys on demand and to be discussed.

The above shown table shall be understood a first guideline and represents only a selection of typical materials for the use in hydrogen atmosphere. The actual definition of the appropriate steel grade in respect to individual project requirements shall be done after technical discussion.



Pressure vessel plates

Pressure-vessel steels are suitable for very high or very low temperatures and are characterized by special strength and wall thickness. Upon request, voestalpine will supply them in sour-gas-resistant condition.

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Pressure vessel plates

Optimized workability

Roll-bonded shell plates, heads and cones in plain-carbon steel from a single source means optimum processing for our customers. The base materials are ideally matched during production. The large range of steel grades cover a wide spectrum of application possibilities.

Boiler and apparatus construction

Pressure-vessel steels made by voestalpine Grobblech GmbH are found in the equipment and boilers in the chemical and petrochemical industries. Creep-resistant pressure-vessel steels withstand even the highest temperatures in these areas of application. They are especially suited to use in hot-application pressure vessels

High-strength alloys

We supply high-strength CrMo and CrMoV steels for the reduction of wall thicknesses in thick-walled pressure vessels. Our customers use the high-strength P460 NL2 mod grade for plates and heads in LPG tank trucks. Cryogenic 9% nickel steels with toughness down to minus 196 °C are used in the construction of storage tanks for liquefied natural (LNG) gas. We also supply heat-treatable fitting steels (WPHY) in as-rolled condition.

Greater thickness 

We provide heavy shell plates in selected steel grades, in thicknesses up to 200 mm and higher unit weights up to 24 tons based on ingot-cast pre-material. We also manufacture pressure vessel steels in sour-gas-resistant design for our customers.

HICfit pressure vessel plates for sour service

The voestalpine product family HICfit stands for pressure vessel plates for sour service and is characterized by their excellent resistance against hydrogen induced cracking (HIC).

HICfit heavy plates are made of slabs produced in our own steel plant. All measures to ensure highest cleanliness of steel are applied during production. This especially includes steel making via the LD process, originally invented and optimized by voestalpine, and the state of the art soft reduction process during continuous casting.

Sourgas-resistant steel grades

S/A 516, S/A 537 Cl.1
EN 10028-2
P265 GH, P295 GH, P355 GH
EN 10028-3

P275N/NL1/NL2, P355 N/NL1/NL2


From a single source 

 We are a single-source supplier of shell plates, heads and cones in carbon steel and in roll-clad condition. The main benefits for our customers are as follows:

  • Advantages in processing technologies, especially during welding, based on use of the same steel for shell plates and heads
  • Technical consultation and coordination provided by quality and research specialists
  • Simultaneous manufacturing and supply of shell plates and heads
  • Lower procurement costs for our business partners

Steel grades

Steel group

Steel grade standard

Steel grades

Unalloyed and alloyed creep-resistant steels

EN 10028-2

P235, 265, 295, 355GH

16Mo3, 20MnMoNi4-5

13CrMo4-5, 10CrMo9-10


Fine-grain structural steels for pressure vessel construction

EN 10028-3

P275 NH, NL1, NL2

P355 NH, NL1, NL2

P460 NH, NL1, NL2

Nickel-alloyed cryogenic steels

EN 10028-4





Pressure-vessel steels


(S)A 203 Grade D, E

(S)A 387 Grade 11 Class 2

(S)A 387 Grade 12 Class 2

(S)A 387 Grade 22 Class 2

(S)A 516 Grade 60, 65, 70 

(S)A 537 Class 1, 2

(S)A 533 Type B Class 2

(S)A 738 Grade A, B



Plate thickness:

5–150 mm (dependent on thickness and steel grade)

Plate width

3,950 mm max. (dependent on thickness and steel grade; quenched and tempered up to 3,800 mm max.)

Plate length

18,700 mm max. (dependent on thickness and steel grade; quenched and tempered up to 13,200 mm max.)

Ordered weight

At least 2 tons per line item (dependent on thickness and steel grade)

Unit weight

20.0 tons max. per single plate


Heavy shell plates made of ingot-cast pre-material

We supply heavy boiler plates in selected steel grades, in thicknesses up to 200 mm and unit weights up to 24 tons based on ingot-cast pre-material.

Steel grades: 

(S)A 516 Gr 60, 65, 70

(S)A 387 Gr 11 Cl.2

(S)A 387 Gr 12 Cl.2

(S)A 387 Gr 22 Cl.2

(S)A 537 Cl.1, 2

(S)A 542 Type D Cl.4a

(S)A 533 Type B Cl.2 (other steel grades upon request)

Plate thickness:

70-200 mm

Plate width

3,400 mm max. (dependent on thickness and steel grade)

Plate length

13,200 mm max. for quenched and tempered plates (9,000 mm max. for thicknesses 150–200 mm)

Unit weight

24 tons max. per single plate


Nickel plates

voestalpine supplies high-quality nickel plates in extra wide and thin dimensions for the storage and the safe transport of LNG and LPG.

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Nickel plates

A 645 Gr A / A 645 Gr B, cost reduction and increased safety in ethylene and LNG tank construction

Revision of API Standard 620, "Design and Construction of Large, Welded, Low-Pressure Storage Tanks" in 2018 has made it possible to use ASTM steel grades A 645 Gr A and Gr B for the construction of ethylene, LPG or LNG tanks.

State-of-the-art production facilities make it possible for us to manufacture both steel grades A 645 Gr A and Gr B as well as conventional 5% and 9% nickel steels.

Use of A 645 Gr A for the production of ethylene tanks provides roughly 15% higher strength, increased safety and the possibility of reduced wall thickness for substantial cost savings in tank construction.

ASTM A 645 Gr B achieves material properties equivalent to those of traditional 9% nickel steels in LNG storage but meets these requirements with roughly 30% lower nickel content. A further result is substantially reduced costs in the production of onshore and offshore LNG tanks and in the construction of LNG fuel tanks. 


Natural gas is liquefied at the extremely low temperature of -164 °C, shrinking its volume by a factor of 600. This makes its storage and transport possible and economically efficient. At these very low temperatures, the utilization of special 9% nickel steels is necessary in order to guarantee sufficient ductility and resistance to brittle cracking. We supply extra wide plates to this market segment, even in thicknesses up to 5 mm.


The LPG process is used to produce propane and process gases from natural gas. These gases are liquefied at room temperature at low pressure and are stored in special tanks made of 5% nickel steels. We supply shell plates, heads and cones from a single source.

Highest quality for the highest degree of security

The basis of our high-quality nickel plates are high-purity slabs from our own steelmaking plant. The very low carbon content guarantees perfect weldability. Further advantages are found in the product's excellent impact strength and the fracturing properties (CTOD). The entire plate surface undergoes ultrasonic testing. The residual magnetism is below 50 Gauss.

Preprocessing to meet specific customer requirements

  • Sand-blasted or sand-blasted and primed
  • Preparation of welded edges: Minimal hardening of the burned edge is made possible by the low carbon content.
  • Plate bending

Steel grades

Steel groupSteel grade standardSteel grades
5% nickel steelsEN 10028-4 / ASTM/ASME 645X12Ni5 A/SA 645 Grade A
5.5 % nickel steelsASTM/ASME 645A/SA 645 Grade B
9 % nickel steelsEN 10028-4 / ASTM/ASME 553X7Ni9 A/SA 553 Type 1



Plate thickness:

5 % nickel steels: 5–70 mm (A 645 Gr A 5-50 mm)

5.5% nickel steels: 5-50mm

9% nickel steels: 5-60 mm
Plate width1600–3800 mm, extra wide plates: 9% nickel steels in 5 mm thickness are available in widths up to 2800 mm.
Plate length12,700 mm max.
Ordered weightAt least 2 tons per line item
Unit weight13.0 tons max. per single plate

*) Additional dimensions upon request.


Our product quality is certified by all of the leading certification institutions. We also meet the highest requirements of KOGAS, the state-operated Korean gas company.

Certifications for 5% nickel steels

  • Lloyd's Register of Shipping (LRS), Great Britain
  • Technischer Überwachungsverein (TÜV), Germany
  • Germanischer Lloyd (GL), Germany
  • Registro Italiano Navale (RINA), Italy
  • Lloyd's Register of Shipping (LRS), Great Britain
  • Bureau Veritas (BV), France

Certifications for 9 % nickel steels

  • Lloyd's Register of Shipping (LRS), Great Britain
  • Technischer Überwachungsverein (TÜV), Germany
Plattierter Behälter

Clad plates

Roll-bonded plates are the economical alternative to expensive high-alloy solid plates. They offer an optimum combination of mechanical properties and corrosion resistance.

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Clad plates

Our roll-bonded plates and heads are used in chemical apparatus engineering and refineries, in the oil and gas industry, in oil sand processing (coke drums) and in the food industry. Clad plates are used in seawater desalination and flue gas desulfurization systems.


A roll-clad sheet or plate consists of a base and a coating layer material.

The base materials for our clad plates come 100% from our own steel production in Linz. Cladding materials are purchased in the form of slabs and plates from renowned manufacturers.

The base materials used are primarily structural steels, boiler and pressure vessel steels and fine-grained structural steels that are characterized by good weldability and workability.

As cladding materials, we supply ferritic and austenitic stainless steels, nickel and nickel-based alloys, copper and copper-nickel alloys that are characterized by their respective corrosion properties.

Further details can be found in the brochure linked below.

The surfaces of the base materials are usually supplied in as-rolled condition or are sandblasted.

The surface of the cladding material is usually ground. We supply ground with grain 80 as a standard. Further grindings can be supplied upon request.

Here you will find more detailed information about delivery conditions and certifications for clad plates.

Available dimensions

Coating material 

Ferrites, austenites

Copper and nickel alloys

Total thickness:

6-150 mm

6-65 mm

Clad plate thickness:

1.5-10 mm

1.5-10 mm


3,800 mm max.

3,800 mm max.


15,000 max. (12,400 mm Q+T max.)

15,000 max. (max.

12,400 mm Q + T)

Unit weight

2–18 tons

2–9 tons

Surface area:

At least 6 m²

At least 6 m²